[[quoteright:330:[[Film/{{Superman}} http://static.tvtropes.org/pmwiki/pub/images/superman_movie_posters.jpg]]]]
[[caption-width-right:330:[[SuspiciouslySpecificDenial Despite the existence of posters, two of these movies were never made]].]]

->'''Conan''': You have no memory of making ''Film/TheStarWarsHolidaySpecial''?\\
'''Creator/HarrisonFord''': No memory.\\
'''Conan''': So it doesn't exist.
-->-- ''Late Night with Creator/ConanOBrien'', [[http://www.dump.com/conanford/ 2006 interview]]

When an element of canonicity is removed from the canon of its work by those who write it.

There are numerous reasons why this can happen. It can be an uncomfortable case of OldShame, double standards, MisaimedFandom, or UnfortunateImplications for the writers. It can also happen when FanonDiscontinuity is so vehement that [[AuthorsSavingThrow the writers end up agreeing and rewrite the canon]]. Sometimes it's just a moment or piece of writing viewed as stupid, unpopular, or simply not making sense within that universe. However, this can also happen if the work was made by a person or developer other than the original creator of the franchise, and, in rare cases, can also happen when they admit CreatorsApathy about canonicity. A {{retcon}} big enough, or dueling writers that are ArmedWithCanon can cause elements of a work, like characters, events, or episodes to be turfed out of the canon.

Sometimes the discontinuity is more subtle, such as a single line of dialogue or the specifics of an event. [[note]]And because this can happen even before the canon is established, as in a novelization or comic-book adaptation that coincides with a recently-released movie, it might not even be noticed at all.[[/note]] Besides those, everything else is in the canon. When that happens, they're treating it in BroadStrokes. Note that this trope has to do with the ''creators'' putting something out of continuity. Obviously, this is one of the meta-causes of AlternateUniverse.

See also ContinuityReboot, AlternativeContinuity, BroadStrokes, and DisownedAdaptation. OldShame works usually get this treatment. The opposite of RetCanon and its descendant tropes. See CuttingOffTheBranches for when all but one ending of a MultipleEndings game becomes canon discontinuity. When fans do this, it is FanonDiscontinuity -- including the ironic form where the fans who actually like the discontinued story ignore the creator's pronouncements that it's not canonical anymore. If the writers {{lampshade|Hanging}} a discontinuity, either canonical or just something the fans want to be discontinued, then that's DiscontinuityNod. See also the OrwellianRetcon, which may overlap with this.

Not to be confused with ExiledFromContinuity, when it's a ''character'' or a specific element or elements of a universe that are declared off limits for use, be it in-universe or in another version of that universe, for legal reasons or otherwise (although whether they are simply made non-canonical or technically still exist, but can't be used depends on the situation). Compare SchrodingersCanon, where a work's status as canonical has yet to be determined, and RetCanon, where something that was intended as non-canonical becomes canonical.


[[folder:Multiple Media]]
* The ''Franchise/StarWarsExpandedUniverse'' has always existed in stages of canonicity, with works in higher levels overriding lower levels, and the films overriding everything. But after acquiring Lucasfilm in 2012, Disney decided to officially drop the lot of it, as seen [[http://starwars.com/news/the-legendary-star-wars-expanded-universe-turns-a-new-page.html here]], with the business end formally coming down on April 25th, 2014. The Disney-Lucasfilm group created a dedicated Story Team to ensure ''everything'' produced under the new regime, starting with ''WesternAnimation/StarWarsRebels'', is iron-clad and wholly consistent canonically, but this necessitates the formal axing and cessation of the old EU and content for it. All of the old EU material is now reclassified as "Legends" that are an AlternateContinuity, and sold under the label of ''Franchise/StarWarsLegends''. One of the few works to remain in-canon post-Story Team is ''WesternAnimation/StarWarsTheCloneWars'', which serves as a prequel to ''Rebels''. However, much of ''Legends'' continuity has subsequently made its way back into Story Team canon in modified form, with ''Rebels'' itself featuring a number of characters/species/concepts/etc. which debuted in the old continuity.
* ''[[Franchise/ShinMegamiTenseiPersona Persona]]'': The events of ''VideoGame/Persona3'' spin-off ''Anime/PersonaTrinitySoul'' and ''VideoGame/Persona4'' sequel ''LightNovel/PersonaXDetectiveNaoto'' were originally intended to be canonical to the games, but their apparent poor reception resulted in both being exiled out of continuity.

[[folder:Anime & Manga]]
* The last hundred or so pages of ''[[Manga/{{Gunnm}} Battle Angel Alita]]'' are ignored by the renewed ''Battle Angel Alita: Last Order''; originally intended as an [[RecursiveAdaptation adaptation of the last level of the game of the comic]], it has spiraled into a second story longer than the original that is still ongoing. Note that in this case, the original ending was a then-''extremely'' ill Yukito Kishiro's effort to avoid AuthorExistenceFailure; since he managed to recover instead, he decided to do it right.
* ''Anime/NadiaTheSecretOfBlueWater''[='s=] director Creator/HideakiAnno created a compilation of the series called "The Nautilus Story", with the conspicuous absence of 11 infamously poor quality filler episodes nicknamed the "Island Arc". All that remains of these filler episodes are twelve minutes, using mostly clips from episodes 23, 28, 30, and 31. A brief shot from episode 32 where the companions look down from the ''Gratan'' substitutes the title card for episode 35.
* The animated version of ''Manga/TsubasaReservoirChronicle'' contains a discontinuity with the "Tokyo Revelations" [=OAV=]s ignoring the last filler arc from the broadcast series and picking up right after the escape from the Rekort library.
* ''Anime/MacrossII'' is the only ''Anime/{{Macross}}'' entry to be officially shunted off into its own private universe (in contrast, both the original ''Anime/SuperDimensionFortressMacross'' TV series and the movie ''[[Anime/MacrossDoYouRememberLove Do You Remember Love?]]'' are taken in BroadStrokes in later ''Macross'' series, despite contradicting each other on multiple points). A good portion of this stems from how ''Macross II'' [[GodDoesNotOwnThisWorld was not a Studio Nue production]] -- Bandai wanted something [[MilestoneCelebration for a tenth-anniversary celebration in 1992]], and when it seemed that Creator/ShojiKawamori's cooperation was not forthcoming, came up with the story themselves. Of the original production staff, only Haruhiko Mikimoto actually worked on ''Macross II''.
* Nothing from the Sun Wukong arc of ''Shamo'' has been mentioned once in subsequent chapters. The arc that followed it was a flashback arc that followed a different character, and when the series finally came back to protagonist Ryo Narushima he had become a washed-up prize fighter, as opposed to the near demi-god he was at the end of the Sun Wukong arc.
* The second ''Anime/DigimonTamers'' movie is mostly about a Digimon attacking on [[BrokenBird Rika's]] birthday and mind-controlling her with a song she used to sing with her father. It also seemed to latch on to the idea planted in the final episode that the Tamers could use the portal Takato found in Guilmon's house to reunite with their partners. It was written and produced without the input of the head writers, however, and a CD drama released later reveals that the kids had yet to reunite with their partners even a year later, and revolved around them sending messages to the Digital World that their partners might stumble upon one day. (One of the writers speaks highly of the movie on his website, however, and the drama has a scene of Rika humming the song from the movie.)
* ''Franchise/{{Gundam}}'':
** ''Literature/GaiaGear'' is a novel written by franchise creator Creator/YoshiyukiTomino, set 110 years after ''[[Anime/MobileSuitGundamCharsCounterattack Char's Counterattack]]'' and focusing on a literal CharClone. The later ''[[Anime/MobileSuitGundamF91 Gundam F91]]'' and ''[[Anime/MobileSuitVictoryGundam Victory Gundam]]'', also written by Tomino, push ''Gaia Gear'' into discontinuity by contradicting elements of its backstory. On top of that, we have Tomino's ''Reconqista in G'' (AKA ''G-Reko''), which purportedly takes place in the future of the Universal Century timeline.
** ''Film/GSaviour'' is in a strange place with regards to continuity. Sunrise has never said it's non-canonical, but have also admitted that they do not like to talk about it and generally pretend the movie doesn't exist. Which is why the G-Saviour's brief cameo in ''Anime/GundamBuildFighters'' came as such a surprise to the fanbase.
** The one-shot manga side story ''Stampede: The Story of Professor Minovsky'', published in 1990, based its timeline on A.D. 1969 being retroactively made UC 0001, and included the then-recent Chernobyl disaster as part of Dr. Minovsky's backstory. These details, and a number of others, are contradicted by other works; in particular, ''Anime/MobileSuitGundamUnicorn'' establishes that UC 0001 is the year the first space colonies are completed and opened to emigration, while ''Manga/MobileSuitGundamTheOrigin'' includes a different version of Minovsky's story.
* Not only was [[BizarroEpisode Episode 4]] of ''Anime/TengenToppaGurrenLagann'' cut out of the manga, but the Episode 5 OpeningNarration even refrained from using clips from that episode! The CompilationMovie also skipped over the events of Episode 4, only showing them as part of a travel montage (which makes Kamina questioning who Kittan is later doubly hilarious, as they met in that episode).
* An interesting deal for ''Anime/TenchiMuyo'': the OVA special "Space Police Mihoshi's Space Adventure", which introduced Mihoshi's partner Kiyone (and ''Anime/PrettySammy'', but that was because of Mihoshi's story) was made non-canonical by the series' creator, yet it was used as a canonical point for another creator's stories using the ''Tenchi'' cast.
* ''Anime/OnePieceFilmZ'' was originally supposed to be canonical, but Oda decided against it due to the numerous discrepancies between it and the manga. Though most agree that, if anything, villain Z should be a part of the canon.
* ''Manga/{{Cyborg009}}'' has at least three stories that Shotaro Ishinomori stated that he personally didn't see as applying to the canon, and that fans would be better off ignoring: "Empty War" (which was rewritten and redrawn as "A New Type of Bomb"), "The Man with the Expensive Castle", and a retconned version of the team's origin that acted as a prologue to the Underground Empire arc. The first story is considered old shame by Ishinomori as he had a better idea and revised it, while the latter two incorporated the ExecutiveMeddling-induced change of having 007 be a kid (in order to tie into the then-recent 1966 animated film adaptation of the manga). To make things confusing or perhaps for a completist measure, Tokyopop included ''both'' "Empty War" and "A New Type of Bomb" alongside each other in their U.S. release of the manga, as well as placing "The Man with the Expensive Castle" before the Vietnam arc (when it was originally published after the Mythos arc), leading to a confusing lapse in continuity.
* ''Anime/{{Pokemon}}'':
** Two episodes of the Best Wishes saga involving Team Rocket fighting Team Plasma [[TooSoon that were cancelled due to the 2011 tsunami and earthquake]] became non-canonical come the Episode N arc, which treats things as if Ash and co. and Team Rocket never met Team Plasma before their actual debut episode.
** The 20th movie, ''I Choose You'', is effectively this in regards to the rest of the series, as it makes several changes to Ash's journey through Kanto. Notable examples include Brock and Misty not traveling with him, Erika being the third Gym Leader he faced rather than the fifth, Charmander's original trainer being a new character named Cross rather than Damion, and Ash seeing [[VideoGame/PokemonDiamondAndPearl 4th]] and [[VideoGame/PokemonSunAndMoon 7th]] Generation Pokémon. In short, this should be seen as an AlternateContinuity to the Kanto saga.
* Both the live action and animated adaptations of ''Manga/BunnyDrop'' ignore the infamous timeskip, [[spoiler:where Rin falls for what is essentially her adopted father]], in favor of a more familial approach.
* ''Manga/SgtFrog'':
** In a story of the 2nd year of the anime, Fuyuki, Keroro, Kululu and Tamama visit various famous ancient locations around the world, trying to find signs of alien artifacts. They turn out to be either toys or domestic utensils built by ancient aliens, completely useless for the invasion. However, later manga chapters, TV episodes, and movies presented completely different origins and functions for those locations, ignoring that episode.
** An episode details elementary-school Momoka's original CrashIntoHello with Fuyuki, who didn't see her coming as he was busy reading a book... wait... wasn't he the BrattyHalfPint at this time?
* ''Anime/DragonBallGT'' was for quite some time in limbo regarding its canonicity to ''Anime/DragonBall'' and ''Anime/DragonBallZ''. Not only did GT disappoint quite a few fans, but ''Creator/AkiraToriyama'' had little to do with it. If the films ''Anime/DragonBallZBattleOfGods'' and ''Anime/DragonBallZResurrectionF'' (the only two films in the franchise to be {{canon}} thus far) somehow didn't do it, the new series ''Anime/DragonBallSuper'', the first ''Dragon Ball'' show covering new material since ''GT'', hit the last nail in the coffin regarding GT's place in canon -- or lack thereof. At the very least, the video game series ''VideoGame/DragonBallXenoverse'' proclaimed that it's an AlternateTimeline. So it ''did'' happen, just not in the main verse. [[spoiler: Heck the GT verse makes an appearance in a DLC of ''Xenoverse 2'' when Future Trunks of ''Super'' is calling for energy of the timelines to power up his sword and finish Zamasu.]]
** The majority of the movies for ''Z'' also get hit with this - the only ones that ''don't'' get hit with this are ''Bojack Unbound'' and ''Wrath of the Dragon'' (which are non-serial) and ''Battle of the Gods'' and ''Resurrection of F'', which ''are'' canon. As for the rest of the movies:
*** ''Garlic Jr'' is implied to take place before the series, and is BroadStrokes in the original ''Z''; however, Krillin meets Gohan, despite the first episode of ''Z'' showing him meeting Gohan for the first time, and both Goku and Piccolo talk about using weighted clothes.
*** ''World's Strongest'', ''Tree of Might'', and ''Lord Slug'' all reference each other, and due to Goku's Gi indicating that it's after he trained with King Kai, but before Goku leaves for Namek...were it not for the fact that a), Piccolo is alive, despite the fact that until he's revived by the Namekian Dragon Balls, he's dead, and when he's revived, he's immediately brought to Namek, b), as none of the cast know Instant Transmission at this point, there would be no way for them to suddenly warp back to Earth, and c), Gohan and Krillin are both shown on Earth in all 3 movies, but they pretty much immediately went to Namek after the Saiyans attacked. ''Tree of Might'' lacks Vegeta, meaning it can't take place in the time skip where Trunks is born. In the case of ''Lord Slug'', King Kai states that Frieza ''Can't'' defeat Slug, as opposed to ''couldn't'', indicating that Frieza is still alive, thus preventing it from taking place during the same timeskip.
*** ''Cooler's Revenge'' can't be canon since Gohan still looks the same as he did when he was on Namek, at the time it would take place, Goku hasn't returned to Earth yet, Vegeta is ''nowhere'' to be seen (despite the fact that, were this movie canon, this should actually and the cast in general is a late Saiyan Saga. And as for ''Return of Cooler'', while the biggest issue (namely, ''Cooler's Revenge'' needing to happen) could be overlooked, if one was to do that, it's still non-canon because Goku doesn't use Instant Transmission, Gohan can't go Super Saiyan, and Future Trunks is completely absent.
*** ''Super Android 13'' would take place between the death of Gero and the appearance of Cell...except 16, 17, and 18 are nowhere to be seen, despite the fact that the plot of ''Z'' was focused around the hunt for those 3; additionally, Goku should still be incapacitated by his heart virus.
*** ''Broly: The Legendary Super Saiyan'' was initially seen as non-serial alongside ''Bojack Unbound'' and ''Wrath of the Dragon'', since while it does have Goku and Gohan in their base forms at the start of the movie, despite the fact that they should be in Super Saiyan due to the movie taking place in the period of time between the announcement of and the beginning of the Cell Games, that's hardly a continuity error in comparison to the other films[[note]]if you wanna get technical, one could argue that Cell not showing up to fight Broly could count, considering Broly would be a ''perfect'' opponent for Cell, but considering that Cell doesn't exactly know Instant Transmission, as well as the fact that he wouldn't have been until Piccolo left that he would've gotten suspicious, that can be overlooked[[/note]]...up until ''Anime/DragonBallSuper'', which had Kale, a DistaffCounterpart of Broly, whose Super Saiyan transformation caught Vegeta and Goku completely offguard. This puts the other two Broly films out of canon as well, and even if that wasn't the case, the second couldn't be canon due to the fact that the Dragon Balls don't function like they do in the series proper. As for the third...while nothing in it contradicts canon, it's seemingly been officially moved into this, since Bio-Broly hasn't reappeared at all outside of 2 [[VideoGame/DragonBallHeroes video]][[VideoGame/DragonballZDokkanBattle games]].
*** ''Fusion Reborn'' would take place during the period of time after Goten and Trunks learn fusion, but before they fight Buu...but Buu's absense, as well as the absence of Mystic Gohan, prevent this movie from being canon.
* ''Manga/BlueExorcist'' OvertookTheManga in its first season, and its final nine episodes really aren't compatible with the source material. Season two thus ignores everything after episode 17, along with the anime-only scenes from episodes 16-17, and picks up with the Kyoto Saga from the manga.
* The original 1998-2000 anime TV series of ''Manga/CardcaptorSakura'' included two expansion movies, the second of which, ''The Sealed Card,'' was meant to function as a GrandFinale to the series (as the original manga had a famously inconclusive ending), most significantly providing a final resolution to Sakura and Shaoran's relationship. 16 years later, Creator/{{CLAMP}} returned to the story again with the ''Clear Card'' arc, which ''immediately'' revealed that at least the second movie never happened, as it began with Shaoran returning to Japan for the first time since he left at the end of the original series. Hilariously, while most of ''The Sealed Card'' was concerned with Sakura [[CannotSpitItOut being unable to simply tell Shaoran she loves him]] in response to his earlier love confession, only finally telling him right at the very end, ''The Clear Card'' treats their feelings as a given and they're practically lovey-dovey right from the moment Shaoran comes back, making all the drama of the now non-canon movie seem pretty silly.

[[folder: Comic Books]]
* ''Comicbook/CaptainAmerica'':
** In ''Captain America'' (vol. 1) #225, Steve Gerber created a new origin for Steve Rogers, revealing that he was from the Midwest and had an older brother who died at Pearl Harbor. The story was stricken from canonicity by later writers, with Gerber's origin {{handwave}}d away as false memories implanted by the government in case Steve were ever captured.
** ''Captain America'' vol. 4 had a controversial story by John Ney Rieber and Chuck Austen, which implied that the story of how Cap had been frozen (recounted in ''Comicbook/TheAvengers'' (vol. 1) #4) was a lie. "Ice", Austen's follow up story arc, revealed that the U.S. government had frozen Cap so that he couldn't prevent the atomic bombings of Hiroshima and Nagasaki, and that the {{Flashback}}s from ''Avengers'' (vol. 1) #4 were FakeMemories. Austen was soon replaced, and the {{Retcon}} was never mentioned again.
* Likewise, the ''Conspiracy'' mini-series strongly implied that the rise of superhumans during UsefulNotes/{{the Silver Age|of Comic Books}} was a deliberate conspiracy masterminded by a shadowy government cadre known as Control. This has never been mentioned again, and was later contradicted by the events shown in Creator/MattFraction's ''ComicBook/TheDefenders'' run.
* After ''Comicbook/CrisisOnInfiniteEarths'', "Pre-Crisis" continuity (as it became known) became this. And yet, writers sometimes skirted around this, such as when Creator/PeterDavid's Comicbook/{{Supergirl}} somehow was able to travel back to Pre-Crisis continuity, begging the question of whether it actually ceased to exist, or just got... cosmically buried somehow. Now that the Comicbook/New52 is in place, one could be left wondering the exact same questions about the 1986-2011 Post-Crisis continuity... until ''Comicbook/DCRebirth'' revealed that [[spoiler:both universes are the same]].
* Lampshaded in the Creator/GrantMorrison run on ''Comicbook/AnimalMan'' - Animal Man meets the previous version of himself from another continuity during a peyote trip. The same storyline has him ''meet'' Creator/GrantMorrison later in the series, at which point Morrison [[spoiler:explains that the continuity differences come from [[DependingOnTheWriter different writers writing the same character for different comics]]]]. It also features a character - Psycho Pirate - who [[spoiler: remembers all the alternate continuities that have ever existed, and goes crazy as a result]].
* The ''WesternAnimation/{{Gargoyles}}'' comic, written by the series' original head writer and officially promoted by Disney, ignores the third season, save for the first episode, which it largely retells with the first two issues.
* ''Franchise/SpiderMan'':
** One series written out of continuity was ''ComicBook/SpiderManChapterOne'', which ineptly updated several bits of Spider-Man's origin; for instance, the Sandman and Norman Osborn were now related, as a way to explain their ''similar-looking hair''.
** Marvel's [[http://web.archive.org/web/20061123003453/http://www.newsarama.com/000aaaTrouble.htm vague statements]] either took ''ComicBook/{{Trouble}}'' out of continuity or implied that it never was in continuity. This series depicted Peter's Aunt May as an unwed teenager and implied she was really his mother. Mark Millar ultimately tried to salvage ''Trouble'' as canonical in the last issue, trying to establish it as taking place in the Comicbook/UltimateMarvel Universe via having reference be made to the Ultimate Marvel version of Bucky Barnes (who survived the war and became a famous writer). However, no one else has bothered to pick up on it and it's still a stand-alone story, mostly because it doesn't hold up to anyone with an understanding of basic math. ''[[Comicbook/TheUltimates Ultimate Avengers]]'' seemingly cleared up the issue by establishing that ''Trouble'' is simply a [[ShowWithinAShow comic-within-a-comic]] in the Ultimate universe.
** Despite the claims of a VerySpecialEpisode, Peter Parker was '''never''' molested.
* ''Comicbook/ArchieComicsSonicTheHedgehog'':
** The infamous "25 Years Later" arc depicted two different alternate futures for Mobius, one of which was ironically created as a result of attempts to change the other. Neither one was mentioned again after the arc ended. Even more egregiously, the character of Lara-Su, Knuckles' and Julie-Su's future daughter and a major player in the arc, vanished along with it, even though her character was introduced in yet ''another'' alternate future story written before "25 Years Later".
** The "X Years Later" timeline was revisited in a ''Sonic Universe'' story, while a later one featured the alternate version of Lara-Su (who was a separate person from the one who appeared in "25 Years Later").
** This seems to be the effect of the past ''two hundred fifty one issues'' following the end of ''ComicBook/SonicTheHedgehogMegaManWorldsCollide'' and its CosmicRetcon ending. WordOfGod states that, yes, those issues ''did'' happen, but it's obvious that they won't have any major standing in the new comics.[[note]][[ScrewedByTheLawyers They can't even touch the old continuity anyway due to the end result of the lawsuit with Ken Penders,]] as Archie had to shunt out ''every'' character not originally created by Sega, [=DiC=] or Ian Flynn in a hurry.[[/note]]
*** WordOfGod also stated that the ''Sonic Underground'' and ''Sonic X'' continuities were also erased by the same event.
* ''ComicBook/JonSableFreelance'': Creator Mike Grell's later uses of Jon Sable have ignored the 27 issues of ''Sable'' written by Marv Wolfman.
* A storyline in ''[[ComicBook/JusticeLeagueInternational Justice League Europe]]'' revealed that Doctor Light's IceQueen behavior was the result of chemicals in a popular soda she enjoyed drinking, leading to the character becoming more personable once she kicked her habit. This was completely ignored by later writers, who brought back her rude, condescending personality with no real explanation.
* ''Franchise/TeenageMutantNinjaTurtles'':
** The third volume of the comic book published by Image Comics, as the official continuation to the [[ComicBook/TeenageMutantNinjaTurtlesMirage Mirage-produced series]], was completely ignored when TMNT co-creator Peter Laird returned to write volume 4.
** Almost all of the "guest era" portion of volume one, which took place from issues 22 through 44 and did not have any input from Laird and Eastman, has been stated to be non-canonical, with the sole exception of "The River" two-parter from issues 27 and 28.
* In the rebooted series ''[[Comicbook/IncredibleHulk The Hulk]]'', an angry response to writer/artist Creator/JohnByrne's reboot of the title character, particularly his "Man of Steeling" of the Hulk in Annual #1, was responded to in the title's letters page by something along the lines of, "When you not like what happen, do what Hulk do: Pretend it never happened." Thus, the six issues and an annual were simply removed out of existence.
** In ''Comicbook/IncredibleHulk'' (vol. 2) #269-287, the ''Rampaging Hulk'' stories were retconned into being techno-art movies by the Krylorian Bereet.
** During Creator/PeterDavid's "Tempest Fugit" storyline, one line discontinuitized the entirety of previous writer Bruce Jones' 42-issue run.
* A particularly brutal version happened in the first issue of the ''[=ClanDestine=][=/=]X-Men'' mini-series. In one line of dialog, Alan Davis (Comicbook/ClanDestine's creator and artist/writer on the original Clan mini) rendered the entire second half of the original mini (i.e. The Issues He Didn't Write) as AllJustADream.
* Keith Giffen's infamous "Five Years Later" TimeSkip in ''ComicBook/{{Legion of Super-Heroes}}'' was motivated by his desire to avoid the many dangling plot threads left over from Paul Levitz' run.
* ''ComicBook/{{Magneto}}'' #0 was published as the origin of Magneto, but has been superseded by ''Magneto: Testament''.
* ''Comicbook/TheWarlord'':
** The 2006 series has been largely ignored in Franchise/TheDCU continuity. With the 2009 series continuing the original series, it seems the 2006 series has slipped completely into this realm.
** Mike Grell's 1992 mini-series off-handedly dismissed the death of Tara, which occurred in issues after Grell left the original series.
** The new series seems to ignore Mariah's decision to willingly partner herself with a man who physically abused her. Grell has restored her to her original ActionGirl AdventurerArchaeologist persona.
* ''ComicBook/CountdownToFinalCrisis'' was almost discontinuity. Grant Morrison's ''ComicBook/SevenSoldiers'' led into ''ComicBook/FinalCrisis'' but ''Countdown'' did not. However, Morrison (who also wrote ''Final Crisis'') was forced to cave in and acknowledge ''Countdown'' via a time loop scenario: Darkseid wasn't killed at the end of ''Countdown'' but thrown backwards in time and possessed the mobster who would become Boss Dark Side, resurrecting his minions in human bodies and consolidating his power base while waiting for his "death" so that he could kill his son and bring the corrupted-by-regular-Darkseid Mary Marvel into his inner circle. ''Alternatively'', Darkseid fell backwards through time after the events of Jim Starlin's ''Death of the New Gods''... but Morrison has stated that the true final war of the New Gods was fought on [[YouCannotGraspTheTrueForm a higher plane than mere mortals could comprehend]], and that ''both'' Countdown and [=DoTNG=] were merely the mortal characters'/writers'/artists' hopelessly limited, three-dimensional perception of what ''really'' happened.
* Years before the ContinuitySnarl of ComicBook/{{Hawkman}}, there was a story, in the original Silver Age 1960s Hawkman series, which threatened to reveal Carter Hall's identity as Hawkman. He ended up protecting his identity, but publicly revealing that he's a space alien. Needless to say, this was ignored later.
* An odd example is ''ComicBook/SovereignSeven'', a team of humanoid aliens created by Creator/ChrisClaremont for Creator/DCComics. They were part of the ''Genesis'' CrisisCrossover, and at one point, ComicBook/PowerGirl became a member of the team. And then, in the final issue, it turned out they were entirely fictional within the DCU. This appears to have been for the opposite reason than most; Claremont wanted to separate his (creator-owned) characters from TheVerse once his book was cancelled.
* ''New Avengers: Illuminati'' #3 has been treated as such, due to the sheer level of CriticalResearchFailure on the part of Bendis regarding the original ''Comicbook/SecretWars'' series and the Beyonder.
* The 1990s ''ComicBook/MetalMen'' miniseries [[RetCon reveals that they are actually human minds in robot bodies and has Will Magnus become Veridium]], a Metal Man based on a fictional metal. This change was not well received and quietly dropped from continuity, along with the Metal Men themselves. When Magnus appears as one of the main characters of ''ComicBook/FiftyTwo'', he [[DiscontinuityNod refers to the '90's series as hallucinations resulting from a psychotic break]], and now takes regular anti-depressants to help keep his mind in one piece.
* The "Life and Death of Johnny Alpha" story in ''Comicbook/StrontiumDog'' has explicitly relegated all of Peter Hogan's stories to the realm of InUniverse fanfic. Garth Ennis' contributions seem to have actually happened, except for maybe "The Darkest Star". The far future ''Durham Red'' stories seem to be out too.
* Creator/DCComics has a series of books entitled ''The Greatest Stories Ever Told,'' each featuring one character or theme. A Batman volume came out in the late 80s, followed by a volume 2 in the early 90s. V2 was released opposite ''Film/BatmanReturns,'' and features all Catwoman and Penguin stories. Decades later, DC revived its ''Greatest Stories'' series, reprinting the first Batman volume... and produced an entirely new ''Greatest Batman Stories Volume 2,'' shoving the previous V2 into no-man's land. (By amusing coincidence, the first volume of Batman stories was the second ''Greatest Stories'' volume overall (after Franchise/{{Superman}}), and thus had ''Greatest Stories Volume Two'' on the spine. So, at a casual glance, all three different books appear to be "Volume Two" of the same series.)
* DC ran an event called ''Origins & Omens'', which had each book featuring an ominous short story hinting at future plots. The ''ComicBook/TeenTitans'' story featured several major revelations, such as Comicbook/{{Static}} joining the Titans, Comicbook/BlueBeetle kissing ComicBook/WonderGirl, Sun Girl becoming pregnant with Inertia's child, and Kid Devil being turned into a withered husk. With the exception of the Static bit, literally all of these plot points were ignored.
* In ''ComicBook/TheSupergirlFromKrypton'', Creator/JephLoeb had [[ComicBook/{{Supergirl}} Kara Zor-El]] arriving on Earth naked. Supergirl writer Sterling Gates retconned this quietly in [[ComicBook/Supergirl2005 Supergirl's Post-Crisis book]] during his critically acclaimed run, establishing she wore clothes during her space trip, and it was never brought up again. In the same way, most of the stories written by Jeph Loeb and Joe Kelly are disregarded by writers and fans alike.
* Chuck Austen's ''Comicbook/XMen'' run is treated as such outside of the BroadStrokes. Later writers have gone back and forth on his ''[[Comicbook/TheAvengers Avengers]]'' run, though. Bendis' ''Comicbook/AvengersDisassembled'' used Austen's plot point about Comicbook/{{Hawkeye}} sleeping with Comicbook/TheWasp and suddenly disliking [[Comicbook/AntMan Hank Pym]] as a key plot point (as a conversation about the Wasp's relationship with Hawkeye is what leads to Comicbook/ScarletWitch accidentally remembering her babies), but Rick Remender's ''Comicbook/SecretAvengers'' run once again had Hawkeye and Pym as close friends, seemingly ignoring Austen's story.
* Devil's Due Publishing's entire seven-year run of ''[[Franchise/GIJoe G.I. Joe: A Real American Hero]]'' (including numerous side titles), intended to be a continuation of the original Marvel storyline, was segregated to its own continuity after IDW Publishing took away the comic book rights from DDP. IDW now publishes its own continuation of the Marvel run (penned by its original writer Larry Hama), reprinting the Devil's Due run under the title of ''G.I. Joe: Disavowed''.
* Creator/OrsonScottCard's ''ComicBook/UltimateIronMan'' miniseries revamped Tony Stark's origin story in a way that ended up being ignored by every other comic featuring Ultimate Iron Man, creating much ContinuitySnarl. Creator/MarkMillar eventually put his foot down and {{retcon}}ned the Ultimate Iron Man story into actually have been a ShowWithinAShow in the UltimateUniverse.
* At one point in ''Comicbook/XMen'', the lineup at the time (Storm, Wolverine, Psylocke, Longshot, Dazzler, Colossus, Havok & Rogue) were killed and resurrected, making them invisible to cameras, and this is treated almost as a second mutant power in the next few dozen issues. When Creator/ChrisClaremont left, however, this was completely forgotten, and the lineup at the time are seen on camera without comment from then on. His run in 2000 makes a brief mention of this fact with Rogue, but this only serves to muddy the waters further - where it's been mentioned at all, it's explained as a side effect of the Siege Perilous, except that Wolverine and Longshot never went through it, and Rogue ''did''. Common fan explanation is that Roma quietly revoked the "invisibility" gift around the time of the ''Xtinction Agenda'' crossover (which is where Claremont actively stopped referencing it) and that the gift itself may have been contingent on the X-Men both possessing and going through the Siege Perilous. Another possibility is in ''ComicBook/{{Excalibur}}'' when Meggan destroyed the Lighthouse, which was considered the "Lynchpin of the Multiverse", and its destruction may have disrupted Roma's powers. It happened shortly before ''Xtinction Agenda'', which would explain the X-Men being able to be seen on television during the storyline and afterwards.
* ''Marvel: The End'' was speculated to be in continuity. Tom Brevoort has stated it is not in continuity.
* ''ComicBook/{{Nextwave}}'' is probably the oddest example of this trope ever made. Officially, it ''is'' not canonical, but most fans (and quite a few writers!) treats the act of making it discontinuity as a discontinuity in and by itself. This has caused some of the lunacy contained within the series (mainly the parts containing Aaron Stack and the other team members) to spill into the Marvel mainstream.
** The Beyond Corporation from the series later reappeared in ''Comicbook/MightyAvengers''. The official explanation is that the series ''is'' canonical, but took place in an alternate universe that Monica and the others had been kidnapped and sent to. Monica claims that once she got back to Earth-616, everyone around her assumed she was insane whenever she brought up the events of ''Nextwave''.
* ''ComicBook/SecretInvasion'' ignored the ''[[ComicBook/XStatix X-Statix Presents: Dead Girl]]'' mini-series, where the [[ComicBook/TheAvengers Avengers]] member Comicbook/{{Mockingbird}} appeared in the afterlife. ''Invasion'' established that Mockingbird had never really died in the first place, making the series moot. However, the series' artist Nick Dragotta did later imply the events of the series were somehow still canonical when discussing the new Miss America he created for the ''Vengeance'' mini-series, making the ''Dead Girl's'' canonicity difficult to determine.
* Along those same lines, Creator/BrianMichaelBendis brought back Comicbook/TheWasp after killing her in ''Comicbook/SecretInvasion'', with the explanation that she'd never ''really'' died in the first place. However, Wasp had earlier appeared in an issue of ''Comicbook/TheIncredibleHercules'' where she was seen in the Greek Underworld, establishing that she was indeed dead. Though since the fandom was quite happy to have Jan back, there wasn't too much fuss.
* Creator/JephLoeb and Daniel Way's critically-panned series ''Wolverine: Origins'' had the premise of exploring Franchise/{{Wolverine}}'s MysteriousPast, which by that point had already been quite fleshed-out, so the series consisted of the writers inserting ''new, unknown'' elements of his history in among the existing stuff, making Wolverine's origin (you know, the thing this series was supposed to be clearing up?) one huge ContinuitySnarl. Among the "revelations" made were the fact that [[ShockingSwerve Wolverine is not a mutant after all but rather a "lupine,"]] a species that looks completely human but is actually [[ArtisticLicenseBiology canine rather than primate in origin]], and that Logan's mysterious, immortal ancestor, the founder of "lupine" society, had been behind basically every threat he'd ever faced, including the Weapon Plus program (even though the mastermind of that had already been revealed as someone else in a far better story). This was swept under the rug almost immediately after the series ended; whenever Logan's species has been referred to since then, he's always been called a human mutant, and the writer of a miniseries set during the same time period as ''Origins'' confirmed he'll be ignoring it, quite simply because it would be too confusing to acknowledge. Except the plot thread is still continuing in ''Wolverine''...
* If a writer writes anything involving the Phoenix Force, it is bound to be rendered non-canonical by the next writer that writes something involving Phoenix. Most notably, ''ComicBook/AvengersVsXMen'' ignored the Alan Davis-penned Phoenix Force stories from his ''ComicBook/{{Excalibur}}'' run, which among other things established the Phoenix Force as Merlin's private energy reserve stash based off of the lifeblood of the universe, as well as establishing that any usage of the Phoenix Force is enough to bring the various cosmic forces down upon the wielder, due to the fact that every time a user uses the Phoenix Force, the collective life force of the universe is drained.
* ''Endsong'', which was a sequel to ''ComicBook/TheDarkPhoenixSaga'', was declared non-canonical almost as soon as it was written. It was not until ''Avengers vs. X-Men'' that it was restored to canonicity, with Wolverine giving a vague recap of the story to the Avengers when discussing how the Phoenix Force possessed Jean's corpse and why Scott Summers was batshit insane to want to try and force Hope to bear its power.
* Everything previously established about the White Queen (complete with her being in her 40s) was wiped out by the combination of Creator/GrantMorrison's ''Comicbook/NewXMen'' run and Comicbook/EmmaFrost's short-lived flashback ongoing series.
* In the 70's, Comicbook/MortadeloYFilemon author Francisco Ibáñez lost his ownership rights over his characters after a few legal fights with his publishing house. They subsequently hired new, usually unnamed artists to take on the series instead. The change was very noticeable and unsuccessful, so the publishers allowed Ibáñez to retake his series, but under their guidelines. Some years later, the courts awarded him the full ownership rights for the series, and he proceeded to ban the publishers from ever again reprinting any of the books he hadn't authored and [[ChuckCunninghamSyndrome get rid of all the characters he had been forced to write in]] but didn't really like. Interestingly enough, he did save one particular book from the purge, since the artist who had written it was a friend and had asked him for advice- Ibáñez even drew a new cover for it.
* ''ComicBook/AdamStrange'''s late Eighties turn to the DarkerAndEdgier has become this, as most later writers ignored the ideas in it (other than the introduction of Aleea, Adam and Alanna's daughter). Oddly, however, all five issues of this phase have been reprinted by DC in glossy full color, unlike almost any other Adam Strange stories.
* At the end of ''Comicbook/{{Asterix}} and the Falling Sky'', the characters get their memories wiped. This was presumably done because the story broke the established rules of the universe, being a GenreShift into science fiction involving AncientAstronauts. It also had the unexpected upshot of allowing fans to doubly ignore an extremely poorly-written, poorly-drawn and borderline xenophobic story.
* The first arc of Reginald Hudlin's ''ComicBook/BlackPanther'' wasn't meant to be canonical at first, which is why the book gave a radically reworked origin to Klaw (making him a {{Cyborg}} instead of a being of living sound), and then had him KilledOffForReal. Klaw has since shown up again in the Marvel Universe with his classic appearance and no references to his "death".
* There is an obscure UK-exclusive ''Franchise/{{Transformers}}'' comic called "The Beast Within", wherein the Dinobots merge to form a combiner simply called [[ExactlyWhatItSaysOnTheTin the Beast]], which proceeds to slaughter most of the Decepticons and a number of Autobots before being destroyed. When asked about a Dinobot combiner, Hasbro tends to deny all knowledge of such a thing, indicating they've either forgotten the comic or like to pretend it doesn't exist, something most fans are happy to agree with. This was finally made this trope when the true Dinobot Combiner, Volcanicus, was introduced for the mobile phone game ''VideoGame/TransformersEarthWars''.
* The BOOM Studios ''ComicBook/DarkwingDuck'' comics had crossed over with the ''ComicBook/DuckTales'' comics for their respective final issues. However, the crossover has been officially declared non-canonical due to the Joe Books omnibus omitting them. Correspondences with Aaron Sparrow (who was the original editor and rewrote the stories for the omnibus) claim that the story was published without Disney's approval, as these final stories were printed after Disney revoked the license.
* Played with in regards to ''Batman: Son of the Bat'': The story was originally canonical and suggested the origin of Ibn al Xu'ffasch, son of Batman and Talia al Ghul from ''ComicBook/KingdomCome''. Then the story was declared an {{Elseworld}}s story, removing it from continuity. Then it was brought back to canonicity, but {{retcon}}ned so that Batman and Talia's consensual encounter was changed to Bruce being drugged and raped by Talia, in order to produce a son, Damian.
* This has occurred to Betty Kane as ComicBook/{{Batgirl}}. While it's true Barbara Gordon was the first Batgirl to have all the main Batgirl traits, the first Batgirl (or "Bat-Girl" as it was spelled then) was ComicBook/{{Batwoman}}'s pre-Crisis KidSidekick Betty Kane. When Crisis hit, DC decided to {{retcon}} Betty's existence as Batgirl away. Barbara is chronologically the ''first'' Batgirl and Betty never even took up the mantle. Instead, Bette (as she was renamed) became the superhero Flamebird. Bette is still technically a part of the "Bat Family", but [[FanonDiscontinuity fans look her over]] and in canonicity, this is rarely brought up.
* Every time the ''Franchise/StarTrek'' license is given to a different comic book company, the previous company's books get tossed into the Discontinuity bin. Though, in Creator/DCComics[='=] case, they had their previous comics tossed out while ''still holding the license'', thanks to Paramount demanding a reworking of the terms of the license so that they could [[ExecutiveMeddling exert more creative control]] over the comics.
* The ComicBook/DoomPatrol has had multiple cases of this:
** John Byrne rebooted the entire franchise with his run, and nothing before is even remotely canonical. Fan reception was ''not'' positive, to say the least, which led to...
** John Byrne's run specifically not being considered canonical by the subsequent creative teams, but everything ''it'' retconned out is indeed still canonical. Keith Giffen's run even brings back Crazy Jane from the Grant Morrison run, who didn't exist in the Byrne run. Unfortunately...
** The ComicBook/New52 reboot seemed to have retconned the team out of existence. Niles Caulder shows up in ''The Ravagers'' ''severely'' de-aged and Danny the Street is, well, a street again instead of a planet with no explanation as to why. Similarly, Beast Boy's origin is completely changed and no longer involves him being adopted by Mento and Elasti-Girl of the Doom Patrol. ''However''...
** The Doom Patrol, ''including Niles Caulder'' later appear in Geoff Johns' ''Justice League'' run and ''Forever Evil''. ''League'' featured an older Niles Caulder than the one in ''Ravagers'', and he is indeed in charge of the Doom Patrol. However, fan reaction to the portrayal of the team was... mixed, to say the least, Caulder was portrayed as an absolute bully to the team, whereas he was previously a manipulator who at least ''pretended'' that he cared about them and their feelings. Eventually, this version would be regarded as not canonical as well, with...
** Gerard Way's Doom Patrol, the debut title of the ComicBook/YoungAnimal imprint! At first, it seemed like Way's DP would be a complete ContinuityReboot, in a similar vein to Byrne's. However, it is later revealed that everything except the Byrne and New 52 stuff is canonical, as the characters make specific reference to events from the Grant Morrison and Keith Giffen runs.
* The ''ComicBook/{{Finder}}'' arc "Torch" appears to be this, as it was abandoned halfway through and the published chapters then scrubbed from the website.
* ''ComicBook/SpiderMan2099'' vol. 2 disregards everything that happened in Vol. 1 after Creator/PeterDavid left. Given the way TimeTravel works in the Marvel Multiverse, fans are attempting to HandWave it by declaring it an AlternateUniverse, but there has been no WordOfGod on that point thus far.
* ''ComicBook/ShazamTheNewBeginning'' by Roy Thomas:
** The comic was DC Comics' first official ComicBook/PostCrisis reboot of the origin of [[ComicBook/{{Shazam}} Captain Marvel]] until years later when it was replaced by ''The Power of Shazam!'' by Jerry Ordway. Notably, while this carefully left Marvel's other post-Crisis appearances untouched, it removed Black Adam's significant role in the ''War of the Gods'' CrisisCrossover, establishing that Adam didn't have his powers between Billy's origin story and his return in the ''[=PoS=]'' ongoing.
** ''Crisis Compendium'' places (or maybe dumps) this story on "Earth-85", along with other early post-Crisis stories that got contradicted by later events, such as ''Comicbook/{{Catwoman}}: The Tin Roof Club'' (which has Selina wearing her pre-Crisis purple-and-green costume, and features the death of Holly Robinson) and everyone's favourite ContinuitySnarl, ''Comicbook/{{Hawkman}}''.
* [[ComicBook/SonicX The Sonic X comic]] is a curious case. As is the norm with comic tie-ins to cartoons in general, it was utterly ignored by [[Anime/SonicX the show it was based on]], and the comic even had glaring continuity issues and [[AdaptationPersonalityChange inconsistent characterizations]] with the Anime since issue #1. However, the editorial behind the Sonic X comic was also the publisher of the regular Sonic comics, and they had the two titles cross over, establishing that the Sonic X comic exists in the Archie Sonic universe as an alternate dimension. In other words, the tie-in comic ''is non-canon to the Anime it's based on,'' ''[[MindScrew but is perfectly canon to the completely unrelated Archie Sonic continuity.]]''

[[folder:Fan Fic]]
* Since ''Fanfic/CalvinAndHobbesTheSeries'' is noted to have been in [[Fanfic/Swing123AndGarfieldodiesCalvinverse the same verse]] as Creator/{{Swing 123}} and Creator/{{Garfieldodie}}'s other C&H fics, this places ''Fanfic/CalvinAndHobbesIIIDoubleTrouble'' (by the former) and ''Fanfic/TroubleIsland'' (by the latter) in this, as they'd resolved the long-running CassandraTruth that's still present in ''The Series'', [[SubvertedTrope though do keep in mind that they simply come after]] ''The Series''. ''Fanfic/RetroChill'' has this problem even more, as the status quo is ''massively'' shaken up by the end. This is finally fixed in the bonus chapter of the rewritten ''Fanfic/CanYouImagineThat''.
* The writer of ''Fanfic/AngelOfTheBat'' is very fond of [[ShownTheirWork showing his work]] and referencing lots of content from all over Batman and Batgirl's history, but willfully ignores bits of Cassie's backstory, including limiting her speaking ability and making her resentful of her father rather than loving towards him. Red Hood's role also implies Comicbook/CountdownToFinalCrisis doesn't exist in this continuity.
* The author of ''FanFic/SonicXDarkChaos'' had started writing a prequel story at one point, but later decided to go and rewrite the original story. The changes made to Dark Chaos ended up contradicting the prequel so much that the prequel was discontinued altogether.

[[folder:Films -- Animated]]
* Franchise/DisneyAnimatedCanon:
** It appears that [[WesternAnimation/TheLittleMermaid the]] ''[[WesternAnimation/TheLittleMermaid Little Mermaid]]'' [[WesternAnimation/TheLittleMermaid animated series]] (designed as a prequel to [[Disney/TheLittleMermaid the first movie]]) has been kicked out of continuity by ''Disney/TheLittleMermaidIII'', as ''Ariel's Beginning'' is also a prequel to the first movie that would generally be consistent with the series but features a totally different version of Ariel and Flounder's first meeting than was presented in the series. Or it's just the one episode about their meeting that is touched -- it has not been clarified.
** ''Disney/TheLionKingOneAndAHalf'' (itself of debatable canonicity) seems to declare discontinuity on the ''WesternAnimation/TimonAndPumbaa'' TV series, since it featured a completely different version of Timon and Pumbaa's youth than featured in the movie.
** The Franchise/DisneyPrincess roster varies significantly, tending to eliminate princesses from less popular movies. This shows up in merchandise and tie-in books. Most notably, [[Disney/TheBlackCauldron Princess Eilonwy]] and [[Disney/AtlantisTheLostEmpire Kida]] are never included. One book specifically mentions that Ariel is the only princess from an underwater kingdom. Of course, there is no real continuity involved -- it's just a marketing thing.
* The writers for the 3rd ''WesternAnimation/AnAmericanTail'' movie, ''The Treasure of Manhattan Island'', caused canon discontinuity for ''Fievel Goes West'' when they had Fievel say that he [[AllJustADream had a dream where the family moved out west]].

[[folder:Films -- Live-Action]]
* ''Film/SupermanReturns'' ignores ''Film/SupermanIII'' and ''Film/SupermanIVTheQuestForPeace'' (and ''Film/{{Supergirl}}''), instead having Franchise/{{Superman}} leave for five years at some point after ''Film/SupermanII''. However, the film flopping led to it being declared out-of-continuity whereas the three movies it was meant to erase remain canonical.
* The ''Franchise/{{Godzilla}}'' franchise is particularly infamous for this. Pay close attention here: ''Film/TheReturnOfGodzilla'' (also known as ''Godzilla 1985'') ignored every Godzilla movie except [[Film/{{Gojira}} the 1954 original]]. The Heisei Era movies after ''The Return of Godzilla'' create a new timeline that is very tightly interwoven, with a largely recurring main cast and developing plotlines from movie to movie. The "ignore every previous movie except the 1954 original" reset button was pushed again four movies in a row: ''Film/{{Godzilla 2000}}'', ''Film/GodzillaVsMegaguirus'', ''Film/GodzillaMothraKingGhidorahGiantMonstersAllOutAttack'', and ''Film/GodzillaAgainstMechagodzilla''. The next movie, ''Film/GodzillaTokyoSOS'', was a sequel to the previous film, but the next film after that, ''Film/GodzillaFinalWars'', has an ambiguous continuity that could fit anywhere or nowhere in the series. ''Vs. Megaguirus'', ''GMK'' and ''Final Wars'' all treat [[Film/{{Godzilla 1998}} the American Zilla]] as canonical... but have no relation to each other!
* ''Franchise/{{Highlander}}'' is one of the most {{retcon}}ned canons in existence outside of comicbooks. Almost all iterations of the franchise accept [[Film/{{Highlander}} the original movie]] as canonical, with a few various {{retcon}}s, but tend to ignore each other:
** The [[Film/HighlanderIITheQuickening second movie]] retcons when [=MacLeod=] and Ramirez first met, now taking place on an alien planet. The updated version of the second movie re-retcons when [=MacLeod=] and Ramirez first met, now taking place on Earth, but in the distant past.
** The [[Series/{{Highlander}} TV series]] ignores the second movie, and retcons the ending of the first.
** The [[WesternAnimation/HighlanderTheAnimatedSeries cartoon TV]] series accepts some of the flashback stuff from the first movie (there are immortals, two of them are Connor and Ramirez) and ignores everything else, including the bits of the first movie set in 1980s New York.
** The [[Film/HighlanderIIITheSorcerer third movie]] ignores the then-ongoing TV series ''and'' the second movie.
** The [[Film/HighlanderEndgame fourth]] and [[Film/HighlanderTheSource fifth]] movies follows the TV series' continuity, while ignoring the second ''and'' third movies.
** And [[Film/HighlanderTheSource the fifth]] movie has been retconned into AllJustADream via WordOfGod.
* ''Film/SleepawayCampIIUnhappyCampers'' and ''Film/SleepawayCampIIITeenageWasteland'' were rendered non-canonical by ''Film/ReturnToSleepawayCamp''.
* ''Film/OnHerMajestysSecretService'' ignores ''Film/YouOnlyLiveTwice'', so far as it shows Film/JamesBond and Blofeld meeting face-to-face for apparently the first time (neither recognises the other) when they had already met in the previous film. Of course, both were [[TheOtherDarrin played by different actors]], but in-universe that's no excuse. You can blame PragmaticAdaptation on this, as the book ''Literature/OnHerMajestysSecretService'' precedes ''Literature/YouOnlyLiveTwice'' (where Bond goes to Japan and finds Blofeld there by accident).
* The third ''Film/ChakushinAri'' movie, ''Chakushin Ari: Final'', is promoted like the grand finale to a trilogy but actually ignores the events of ''Chakushin Ari 2''.
* The [[GeorgeLucasAlteredVersion Special]] [[TheyChangedItNowItSucks Editions]] of the Original Star Wars Trilogy have been declared non-canon by ''Literature/FromACertainPointOfView'', which clearly shows Han shooting first.
* ''Franchise/{{Halloween}}'':
** ''Film/HalloweenH20TwentyYearsLater'', the seventh film, completely ignores the [[Film/Halloween4TheReturnOfMichaelMyers fourth]], [[Film/Halloween5TheRevengeOfMichaelMyers fifth]], and [[Film/HalloweenTheCurseOfMichaelMyers sixth]] films, taking only [[Film/{{Halloween 1978}} the original]] and [[Film/HalloweenII1981 the second film]] as canonical.
** ''Film/HalloweenIIISeasonOfTheWitch'' doesn't exist as far as the rest of the series is concerned, and vice-versa. Then again, it was intended to be this from the start, an attempt to turn the ''Halloween'' franchise into an {{anthology}} series where each film was a standalone story related to [[AllHallowsEve the Halloween holiday]]. The idea didn't stick -- audiences awaiting the return of Michael Myers were extremely disappointed when they got a film about witchcraft and evil Halloween masks, and so the producers brought Michael back from the fourth film onwards.
** The 2018 ''[[Film/Halloween2018 Halloween]]'' reboot follows in ''H20'''s footsteps, being a direct follow-up to the original ''Halloween'' that ignores all the other installments.
* ''Film/TheRockyHorrorPictureShow'' creator Richard O'Brien almost immediately disowned the semi-sequel ''Film/ShockTreatment'', as did the director of both films, Jim Sharman. (Richard has stated that ''Shock Treatment'', originally written as a strict RHPS sequel but soon to evolve into a completely different film, was a mere abortion.) Richard would eventually write both a movie script (''Revenge of the Old Queen'') and a stage musical (''Rocky Horror: The Second Coming'') that wiped the events of ''Shock Treatment'' out of the canon entirely. However, neither were produced.
* ''Film/RockyBalboa'' has all previous ''Franchise/{{Rocky}}'' movies mentioned except for ''Film/RockyV'', and the film doesn't even mention any events from that movie. This is due to Creator/SylvesterStallone[='=]s disapproval of said movie as well as the disapproval of almost everyone who watched it. Though the next film ''Film/{{Creed}}'', does somewhat reference the film, indicating that it did happen, just that Rocky doesn't like talking about it.
* ''Film/{{Predators}}'' dismisses the ''Franchise/AlienVsPredator'' movies and instead it acts as a sequel to [[Film/{{Predator}} the original film]] and [[Film/{{Predator 2}} the sequel]] (while the events of ''Predator 2'' weren't directly mentioned in ''Predators'', neither was ''2'' said to not be canonical).
* ''Film/UniversalSoldier'' has had numerous sequels with numerous instances of installments ignoring other installments. The first film was followed by two MadeForTV sequels, ''Universal Soldier II: Brothers in Arms'' and ''Universal Soldier III: Unfinished Business'', which were ignored by the next film, ''Film/UniversalSoldierTheReturn''. The following two films, ''Film/UniversalSoldierRegeneration'' and ''Film/UniversalSoldierDayOfReckoning'', ignored every previous movie except the first.
* The third and fourth ''Film/{{Pumpkinhead}}s'' ignore the second, ''Film/PumpkinheadIIBloodWings'', which was tenuously connected to the original anyway.
* The ''Film/{{Jaws}}'' franchise ignored ''Film/Jaws3D'' when creating the sequel, ''Film/JawsTheRevenge''. The tagline even said ''Jaws: The Revenge'' was the final installment in the trilogy.
* ''Film/BoggyCreek2TheLegendContinues'' is a curious case; Charles B. Pierce produced and directed the original ''Film/TheLegendOfBoggyCreek'', a documentary/dramatic re-enactment about an actual rural legend of a sasquatch-like creature living in the backwoods of Fouke, Arkansas. The studio that owned the film tried to cash in on its popularity and made a full-on fictional sequel, ''Return to Boggy Creek'', without the involvement of Charles B. Pierce. Charles B. Pierce then, out of spite, made his own sequel, completely ignoring the events of ''Return'', combining a fictional narrative about a college nature trip with more dramatic re-enactments of alleged sightings of the creature.
* The [[Film/ThePinkPanther2006 2006 reboot]] of ''Franchise/ThePinkPanther'' as well as [[Film/ThePinkPanther2006 its sequel]] dismisses all of the events of ''Film/TrailOfThePinkPanther'', ''Film/CurseOfThePinkPanther'' and ''Film/SonOfThePinkPanther''.
* ''Film/XMenFilmSeries'':
** ''Film/XMenOriginsWolverine'' is a very well-known example of this trope. After the film came out, no one was really happy with the result (from the fans to the production team. Even Creator/HughJackman has stated it didn't feel like a Wolverine movie), and the various contradictions it has with the original trilogy. The prequel franchise was then rejiggered with ''Film/XMenFirstClass'' (containing a completely different Emma Frost) and this film was ignored entirely in ''Days of Future Past'' where even ''The Last Stand'' was taken into account. ''Film/{{Deadpool|2016}}'' also continues this, since while it has Creator/RyanReynolds reprising his role from ''Wolverine'', it otherwise completely ignores that film ([[TakeThat outside of taking several potshots at it]]) and features a completely different origin for Deadpool.
** As of ''Film/XMenDaysOfFuturePast'', ''Film/XMenTheLastStand'' has been erased through the CosmicRetcon, but it's featured in flashback scenes and its existence is at least acknowledged midway through the film. ''Film/XMenOriginsWolverine'' however (aside from a flashback scene from Victor crushing Logan's claw) is very hard to reconcile with the events shown, and the ending [[spoiler: with Mystique seemingly rescuing Wolverine before he can be sent to Weapon X]] seems to make it clear the film never happened in the new continuity.
** There were also several [[RecursiveAdaptation comic books]] and video games that were touted as [[AllThereInTheManual "official" prequels to the various movies]] that were contradicted by the later films. For instance, the comic book prequel to [[Film/XMen1 the first movie]] and ''X-Men: The Official Game'' both seem to be contradicted by the events of ''Film/TheWolverine''.
* Other than its title, ''Film/TheExorcistIII'' completely pretends ''Film/ExorcistIITheHeretic'' never happened. So does the [[Series/TheExorcist 2016 series]].
* According to ''[[Film/AmericanPie American Reunion]]'', the [[DirectToVideo Direct-To-DVD]] sequels didn't happen.
* ''Franchise/PlanetOfTheApes'': In the third film, ''Film/EscapeFromThePlanetOfTheApes'', Zira states that apes were held as slaves for several generations before rising up, and that a gorilla named Aldo was the first to say "no". But, ''Film/ConquestOfThePlanetOfTheApes'' tried to retcon that out by editing Zira's speech when Caesar watched it on tape. There was a comic, ''Revolution On The Planet Of The Apes'' that tried to repair some of the stuff after ''Conquest'', though its canonical status isn't clear. It's possible, though, that the changes in the events of the ape revolution are a result of a changed timeline rather than continuity issues.
* When Creator/{{Disney}} purchased Franchise/TheMuppets franchise in 2004, they gained the rights to all but two of the theatrical Muppet films: ''Film/TheMuppetsTakeManhattan'' and ''Film/MuppetsFromSpace'' (which are both held by Creator/{{Sony}}). While Disney has made call-backs to ''Take Manhattan'' in their post-2004 Muppet works, ''From Space'' and Gonzo's newfound status within the film as an alien are ignored by the continuity, returning the character to his pre-1999 designation as a "whatever". If you look hard enough though, you can see a DVD copy of the movie in Walter's bedroom at the beginning of ''Film/TheMuppets''.
* The ''Franchise/ConanTheBarbarian'' film ''The Legend of Conan'' is a sequel to ''Film/ConanTheBarbarian1982'' starring Creator/ArnoldSchwarzenegger. The producers have already stated that it will completely disregard ''Film/ConanTheDestroyer'' as well as [[Film/ConanTheBarbarian2011 the 2011 reboot]].
* The canonical status of ''Film/ANightmareOnElmStreetPart2FreddysRevenge'' in the ''Franchise/ANightmareOnElmStreet'' series has not been clarified by the filmmakers, but it has been ignored by every subsequent sequel.
* ''Franchise/TheTexasChainSawMassacre'': Even discounting [[Film/TheTexasChainsawMassacre2003 the remake]] and [[Film/TheTexasChainsawMassacreTheBeginning its prequel]], which exist in their own separate continuity, every film in the series discounts all the others save for at least [[BroadStrokes parts]] of [[Film/TheTexasChainSawMassacre1974 the original]].
** ''Film/TheTexasChainsawMassacre2'' completely ignores the original film's prescript, which says that the crimes of Leatherface's family were discovered, presumably so there could be a sequel in the first place.
** ''Film/LeatherfaceTheTexasChainsawMassacreIII'' ignores most of the first movie, throws out the second entirely, and is almost a quasi-reboot, but it's really unclear.
** ''Film/TexasChainsawMassacreTheNextGeneration'' ignores both the previous films, though it does make mention of two "minor incidents" occurring since the first movie.
** ''Film/TexasChainsaw3D'' picks up directly after the end of the first movie, ignoring all others in both the main and remake continuities.
* ''Film/DumbAndDumberTo'' completely ignores the existence of ''Dumb and Dumberer: When Harry Met Lloyd'', most notably with Harry's parents and Freida Felcher being completely different characters. Since the film was made without the involvement of Jim Carrey, Jeff Daniels or the Farrelly brothers, and was roundly savaged by critics and fans; few have had problems with this.
* According to actor Creator/JasonClarke, ''Film/TerminatorGenisys'' ignores ''Film/Terminator3RiseOfTheMachines'' and ''Film/TerminatorSalvation''. This is confirmed in the movie itself, which features a different meeting between Connor and Kyle Reese than shown in ''Salvation'' [[spoiler: and while it's moot once the AlternateTimeline plot kicks it, Kyle's opening narration states that despite the actions taken in ''Film/Terminator2JudgmentDay'', they were completely moot as Judgment Day still happened in August of 1997, whereas ''3'' had the actions delay Judgment Day until 2004]]. Ironically, ''Genisys''' underperformance led to it being retconned out as well, with the 2019 ''Terminator'' film ignoring it, ''Rise of the Machines'' and ''Salvation''.
* The ''Franchise/{{Alien}}'' franchise:
** The now dead ''{{Franchise/Alien}}'' ''5'', directed by Creator/NeillBlomkamp, would have done this to both ''[[Film/{{Alien3}} Alien³]]'' and ''Film/AlienResurrection'' picking up directly after ''Film/{{Aliens}}'' and would have brought back Creator/SigourneyWeaver and Creator/MichaelBiehn as Ripley and Corporal Hicks, respectively.
** ''Film/{{Prometheus}}'' pretty clearly eliminates the ''Franchise/AlienVsPredator'' movies out of ''Franchise/{{Alien}}'''s canon by stating that Weyland Industries was founded in 2012 by Peter Weyland, rather than Charles Bishop Weyland, who in the AVP films had already had a successful business by 2004.
** Creator/RidleyScott has basically all but stated as of 2017 that if it isn't directed by him or Creator/JamesCameron, it ain't canon. That also includes the video games, comics and so forth.

* ''Franchise/{{Zorro}}'': at the end of ''The Curse of Capistrano'', the main villain was dead, and Zorro publicly unmasked, revealing his identity to everyone. By the third book, neither of those events had ever happened.
* The issue of Lord Soth from the ''Literature/{{Dragonlance}}'' novels, represents perhaps the unholy lovechild of Canon Discontinuity and ExecutiveMeddling. In the novel ''Knight of the Black Rose'', Creator/{{TSR}} took the famous ''Dragonlance'' character into ''TabletopGame/{{Ravenloft}}'', where he became a [[BlessedWithSuck Dark Lord]]. This did not sit well with one of the original authors of the ''Dragonlance'' series, Mr. Tracy Hickman who, according to rumor, demanded that TSR[=/=]Creator/WizardsOfTheCoast {{Retcon}} Soth's trip to Ravenloft, and [[KilledOffForReal killed off the character for good measure]]. And before dying, he repents of his crimes, regains his honor, and swears an oath to pursue redemption in his afterlife. This is a ''giant flaming TakeThat'' against ever putting him in ''Ravenloft'', as one of its conceits is that some people are simply so evil that they're beyond redemption - and its Dark Lords are those people (although TSR averted the discontinuity by publishing ''Spectre of the Black Rose'' which reconciles both viewpoints).
* ''Literature/{{Animorphs}}'' has some EarlyInstallmentWeirdness, particularly with the rules of [[{{Telepathy}} thought-speak]]. Thus, for the record: morphed!Tobias hearing Jake's thoughts when Jake wasn't in morph? Didn't happen. Ax claiming that he can't use thought-speak when he's in human morph? Yes he can. Also, any sapient species can hear it, even if they can't use it themselves.
* The ''Literature/LegacyOfTheAldenata'' novel ''The Hero'', by Michael Z. Williamson and Creator/JohnRingo, was declared non-canonical after the publishing of Creator/TomKratman and Creator/JohnRingo's ''Watch on the Rhine'' and later of ''Eye of the Storm''.
* The ''Literature/RedDwarf'' book series starts with two novels, ''Infinity Welcomes Careful Drivers'' and ''Better Than Life'', written by Rob Grant and Doug Naylor (working collaboratively under the pen name "Grant Naylor"). After that, Naylor wrote the novel ''Last Human'' and Grant wrote the novel ''Backwards'' -- both of these act as the third novel in the series, in Canon Discontinuity with each other. This could equally fall under ContinuitySnarl, as ''Last Human'' very briefly {{hand wave}}s the events of ''Backwards'' and then goes off into its own AlternateContinuity.
* Creator/OrsonScottCard's ''Literature/TheWorthingSaga'' has multiple levels. The actual "canon" consists primarily of the full-length novel. The stories included in the back of a later edition came first, but Card didn't have them on hand when writing the novel, so a lot of the details differ, and he essentially made them an AlternateUniverse. The stories not included are all [[OldShame so awful]] that he wouldn't even discuss them.
* ''Literature/ManKzinWars'' short story "A Darker Geometry" was declared non-canonical shortly after it was published.
* Creator/{{Plato}} in ''Literature/TheRepublic'', when discussing censoring stories, starts with the necessity of censoring out all myths that attribute evil behavior to the gods.
* When finishing ''Franchise/TheDarkTower'' series, Creator/StephenKing himself stated right before the very end that fans could just stop reading here if they so wished, and simply be happy with the fact that [[spoiler:Roland reached the Dark Tower and finally entered it.]] What follows ''is'' rather cruel, [[AndIMustScream after all.]] Previously, Roland had stated that the book ''Literature/{{Insomnia}}'' felt 'tricksy and full of lies' and did not read it. A character from the book shows up, but his actions and fate are contrary to how he acts in the Dark Tower.
* In the ''Literature/WarriorCats'' series, ''Secrets of the Clans'' was the earliest guidebook. Five years after its release, several other books had come out, contradicting some of the things it said. [[Creator/ErinHunter Vicky Holmes]] [[WordOfGod stated]]: "I'm afraid Secrets of the Clans is a bit of an anomaly, in that it strayed off the path of rightness in several areas. Please take the Super Editions, and other Special Editions, as canonical!"
* ''Franchise/MagicTheGathering'' novels and comics published before ''Literature/TheBrothersWar'' are "prerevisionist"; any details contradicted by later material is non-canonical.
* The monstrous way the Wizard came to power according to ''Literature/TheMarvelousLandOfOz'' was met with such fan outcry that later books, although they don't explicitly contradict it, never mention it again, and the Wizard has to be told a number of things - in part by Ozma herself - he should have known were it true. But in a sneaky way, what was met with massive outcry when it was published has become an establishing trait in DarkerAndEdgier modern retellings like ''Film/OzTheGreatAndPowerful'' and ''Literature/{{Wicked}}'' where Mr. Diggs ranges from AntiHero to villain. Ruth Plumly Thompson also restored this Wizard's history in ''The Lost King of Oz'' when Pastora was found and returned to Oz. At least once, Thompson mentions the Wizard's embarrassment at his history regarding the king.
* None of the ''Franchise/StarTrek'' [[Franchise/StarTrekNovelverse novels]] are considered canonical by Paramount. Despite this, when ''Series/StarTrekVoyager'' was still airing on television, the official website stated that Jeri Taylor's novels ''Mosaic'' and ''Pathways'' were canonical as they featured background information on the characters of that series. In 2006 (by which point ''Voyager'' had finished airing), the entry was amended to state that they "used" to be considered canonical. Also, despite one crossover series, ''Day of Honor'', leading to the ''Voyager'' ep of the same name, they aren't considered canonical, either.
* ''Literature/TheChroniclesOfAmber'' disregards the prequels by another author, something Zelazny had established he did NOT want.
* The short stories in the ''Literature/HoratioHornblower'' saga were considered to be less canonical than the novels by C.S. Forester and he discouraged the reprinting of ''Hand of Destiny'', ''Bad Samaritan'', and ''Hornblower and His Majesty'' (although they are available if you look). ''Destiny'' in particular contributes to the ContinuitySnarl of the ''Castille'' and Hornblower's powder burns.
* ''Franchise/JamesBond'':
** Ian Fleming's ''Literature/TheSpyWhoLovedMe'' was so widely despised - [[CreatorBacklash including by Fleming himself]] - that later novels directly contradict it, and Fleming made it a condition on selling the movie rights to the James Bond books that the producers could only use the title of the novel, not the story.
** The unpublished stories ''The Heart of Erzulie'' and ''Per Fine Ounce'' are considered non-canonical by the publisher. Some stories are considered parody or pastiche and do not count: ''Bond Strikes Camp'', ''Holmes Meets 007'', ''License to Hug'', ''Some Are Born Great'', ''Toadstool'', and ''Your Deal, Mr. Bond''. ''James Bond: The Authorized Biography of 007'' establishes James Bond as German and is likely an AlternateContinuity. Comics and novelizations of ''WesternAnimation/JamesBondJr'' are not considered canonical.
* The ''Literature/DuneEncyclopedia'', the official companion book to the ''Franchise/{{Dune}}'' series, endorsed by Creator/FrankHerbert was/is considered canonical or quasi-canonical by some fans. However, Frank's son Brian, having started writing his own prequel novels has made an attempt to officially de-canonize the encyclopedia.
* The sequel to ''Literature/WhoCensoredRogerRabbit'' follows [[Film/WhoFramedRogerRabbit the film's continuity]] (with ''Censored'' being declared AllJustADream).
* The first novel Creator/ElleryQueen ''The Roman Hat Mystery'' supposedly describes an event that happened some time in the past and mentions that Ellery now lives in Italy with his wife and daughter. The wife, daughter and retirement to Italy are never mentioned in any of the subsequent books that establish that Ellery is a bachelor who lives with his father in New York (apart from a brief period of living in Hollywood).
* As Creator/KirBulychev confessed he had never reread his own stories after publication, many of his book series are subject to that, most notably ''Literature/AliceGirlFromTheFuture'', to the point that the author isn't sure in which century the plot takes place and what is the heroine's birth date. Fans who were eager to defend him developed a theory that the books in the series feature at least three parallel worlds.
* Highly literary British author Creator/MartinAmis was putting together his first big hit, ''Money'', and was running short of cash. So he dashed off ''[[http://www.themillions.com/2012/02/the-arcades-project-martin-amis-guide-to-classic-video-games.html Invasion of the Space Invaders: An Addict’s Guide to Battle Tactics, Big Scores and the Best Machines]]'' - a guide to early arcade games... a distinctly ''odd'' guide to early arcade games. The book is mentioned nowhere in his biography and he doesn't talk about it. Ever.

[[folder:Live Action TV]]
* Due to ExecutiveMeddling, the final season of the TV series ''Series/OurMissBrooks'' had Madison High torn down for a freeway, and Miss Brooks sent off to teach at a L.A. private elementary school. The [[Radio/OurMissBrooks concurrent radio series]] ignored this development, and continued at Madison High as per usual. When [[Film/OurMissBrooks the cinematic grand finale]] was released the following winter, it also ignored the final TV season.
* ''Series/{{Smallville}}'' episode "Eternal" is bad enough the wiki page has [[http://smallville.wikia.com/wiki/Eternal#Discontinuity a section dedicated to it]].
* ''Series/{{Galactica 1980}}'', the ContestedSequel of the original ''Series/{{Battlestar Galactica|1978}}'', was long considered mostly non-canonical by fans. When the franchise had its ContinuityReboot in the 2000s, several novels and comics set in the original continuity were released. Those works made it official that the events of ''Galactica 1980'' never happened - even though Galactica 1980 was actually added to the original series in its syndication run.
* Many ''Series/XenaWarriorPrincess'' fans do not officially consider the two-part "Friend In Need" arc to be the finale, and neither do the writers of the Xena comics. The ''Dark Xena'' arc is basically a FixFic - constructing a story to undo the finale and other events (such as the death of the Olympian gods). Not only do the comics state that the finale cannot be canonical, the show itself makes the events of the final episode dubious at best, since it finished with Xena's soul trapped on Earth as an intangible, invisible ghost. Meanwhile, several episodes throughout the show's run state that Xena and Gabrielle return, reincarnate and generally stick around one way or another forever.
* ''Franchise/StarTrek'':
** There is an urban legend among fans that ''Series/StarTrekVoyager''[='=]s "Threshold" was so badly regarded that it was explicitly stated to be non-canonical by the producers while the show was still in production and later directly contradicted on-screen. In fact, the on-screen contradiction (where character Tom Paris states that he has never navigated a "transwarp conduit") is phrased to avoid contradicting the episode (in which the same character makes a transwarp *flight*, with no "conduit" in sight), and producers don't generally dabble in declaring things canonical or non-canonical, except by altering what is seen on the screen.
** It's an element rather than a whole episode, but ''[[Recap/StarTrekS3E24TurnaboutIntruder Turnabout Intruder]]'', the final episode of the original series, stated that [[SocietyMarchesOn women can't be starship captains]] [[note]]Interestingly, the unaired pilot "The Cage" later made into "The Menagerie" had featured a female first officer who presumably would have had to command the ship in the Captain's absence[[/note]]. [[UnfortunateImplications For obvious reasons]] pretty much the entire rest of the franchise has thrown this rule out the window, including ''Enterprise'' (which was set before the original series).
** In a similar way, another element that has been disregarded by the rest of the series is that ''[[Recap/StarTrekS1E14BalanceOfTerror Balance of Terror]]'' stated that the Romulans [[SciFiWritersHaveNoSenseOfScale did not have warp drive at the time]] [[note]] At the time, it hadn't been clearly established whether impulse drive was specifically slower than light or merely a form of faster than light travel that predated warp drive but later series moved to the former interpretation [[/note]]. Like the above example, the rest of the series, including ''Enterprise'', ignores this.
* ''Series/NinjaTurtlesTheNextMutation'' was one of the inspirations for a whole {{retcon}} of the franchise. The producers even reassured fans that [[TheScrappy Venus de Milo]], outside of history books of the series, would never, ever, ever be mentioned again. The disowning is further pronounced in ''WesternAnimation/TurtlesForever'', where ''The Next Mutation'' (as well as other TMNT oddities best left in the depths of obscurity such as ''WesternAnimation/CartoonAllStarsToTheRescue'' and the musical) is missing from 2003 Shredder's slideshow of TheMultiverse (and just for kicks, even the ridiculously absurd anime {{O|riginalVideoAnimation}}VA is acknowledged in that same scene). Production-wise, this can be explained away by rights issues, but ''everyone'' knows no one wanted to dredge up those continuities again.
* In the ''Series/{{Charmed}}'' episode "All Hell Breaks Loose", the supernatural is exposed to the general public when the Charmed Ones fight a demon before a news crew, causing a chain of events that ends up in Prue's death. However, the episode "Forget Me... Not", introduces the Cleaners, magical beings tasked with "cleaning" such exposures. However, thanks to time travel, that exposure no longer happened. [[FridgeBrilliance Maybe that's what the Cleaners intended all along, and the Charmed Ones just didn't see them.]]
* Creator/{{NBC}} has repeatedly ignored the existence of the 1980-81 season of ''Series/SaturdayNightLive''. In the season-by-season Best Of series, this was the only one skipped, with "The Best of 1980" containing material from the last episodes featuring the original cast. The 15th and 25th Anniversary specials ignored it, save for clips of its musical guests, and the 25th special's opening titles contained a cast photo from every season EXCEPT that one. (Each photo on the film strip is even labeled with the year - 1979 and 1981 have nothing between them.) Additionally, episodes from the 1980-1981 season are rarely shown in syndication. The only season six episodes that have aired in syndication are: a one-hour version of the last episode produced by Jean Doumanian[[note]]with host Creator/BillMurray, who despised everyone in the new cast except Creator/EddieMurphy[[/note]] that aired on Creator/ComedyCentral as part of a weekend marathon called "The Eddie Murphy Experience" and again on Comedy Central's "50 Greatest ''SNL'' Episodes" marathon that came on around the time the syndicated reruns were being retired, a one-hour version of the infamous episode hosted by Charlene Tilton where Charles Rocket ends the show with, "Oh, man. This is the first time I've ever been shot. I'd like to know who the fuck did it" as part of VH-1 Classic's ''SNL'' Rewind marathon, a one-hour version of Eddie Murphy's first episode as a repertory player [[note]]hosted by Robert Hays from ''Airplane!''[[/note]] also part of the ''SNL'' Rewind Marathon, and a full 90-minute version of an episode hosted by Jamie Lee Curtis that aired on NBC (and didn't air on many affiliates due to Pope John Paul II's assassination attempt making the news). It seems as though, in recent years, the ban on 1980-1981 season episodes has loosened a bit due to the Internet and news of Charles Rocket's suicide in 2005. Netflix once had season six as part of the show's 1980s collection[[note]]though the episodes were edited due to musical licensing[[/note]], some season six clips are available for viewing on NBC's ''Saturday Night Live'' page, there was a documentary on the show's rocky history in the 1980s that included a piece on Jean Doumanian's tenure with episode clips, stills, and commentary from former cast members Denny Dillon, Gilbert Gottfried, and Joe Piscopo), many books centered on the show's history (including ''Live From New York: The Uncensored History of SNL'') do touch on this dark age, the Catherine Zeta-Jones episode from season 31 (which premiered two weeks after Rocket's death) had an InMemoriam still of Rocket at his Weekend Update desk, and the 40th anniversary special included Charles Rocket in the montage of cast and crew members who died during the years.
* {{Game Show}}s:
** The 1985-86 ''Series/{{Break The Bank|1985}}'', which aired in syndication. The first 13 weeks of the run (a quizzer where couples earned seconds to be used in silly stunts to earn Bank Cards to possibly break the Bank) were hosted by veteran game show host [[Series/MatchGame Gene Rayburn]], who got into arguments with the producers because they thought he shouldn't be joking around during their serious and suspenseful show (no, seriously). Rather than listen to the man who'd been in television for the better part of 40 years, they fired Gene and brought in Joe Farago; a few weeks later, they dropped the stunts in favor of a $2,000 front-game goal and the Master Puzzle. Subsequent reruns, both in the Summer of 1986 and for a brief time on CBN, were only of Farago's episodes, with no mention of Rayburn or acknowledgement that he had ever hosted in any future airings. (It's unclear how much, if anything, Rayburn had with his shows not being rerun.)
** The producers of ''Series/PressYourLuck'' wouldn't allow Michael Larson's game (split in half after taping and aired June 8 and 11, 1984) to air on Creator/{{USA|Network}} or Creator/{{GSN}} until 2003, as he had [[LoopholeAbuse memorized the board patterns]] and hit the show up for over $100,000. The only indication that he'd even been on the show was the re-randomization of the board patterns.
** ''Series/ThePriceIsRight'' has several examples of omitting its history. Long-time host Bob Barker has absolutely refused to allow episodes where fur coats and other products made primarily from animal carcasses were offered as prizes. He vetoed episodes featuring ex-model Holly Hallstrom (more than 2,000 episodes from 1977-95) with explanations varying, although Barker and Hallstrom had a hostile relationship at least during the later years. Barker also refuses to discuss or even acknowledge longtime announcer Rod Roddy; this is likely because Roddy, who died in 2003, had a salary dispute with Barker, which in turn explains why Roddy did not appear on camera following Season 30 (barring one appearance on the first show of Season 32, by which point Rod was noticeably thinner). And while nearly all of the 1972-80 nighttime run contained furs, Barker would only really have any say on the last three seasons (which he hosted, replacing Dennis). However, it seems he had some say over the James shows as well, as GSN only ever pulled out a daytime substitution from December 25, 1974 after James died in 1997.
** ''Series/WheelOfFortune'', despite running daily since '''[[LongRunners 1975]]''' and debuting with Chuck Woolery and Susan Stafford, seems intent on putting forth the deception that it began in 1981 (or 1983) with Pat Sajak and Vanna White. This may be due to Woolery leaving after salary disputed with creator Creator/MervGriffin (he wanted $500,000; Merv offered $400,000). Bizarrely, for their ceremonial 3,000th nighttime show in 1998, ''Wheel'' showed clips of Edd Byrnes' first pilot (taped August 28, 1974) and name-checked him. They then claimed that what we were seeing was '''the''' pilot, disregarding not only another pilot taped later that day but also the original 1973 pilot ''Shopper's Bazaar'', hosted by Woolery. They also seemed intent to, in Season 28, erase any idea that they taped out of order after longtime announcer Charlie O'Donnell died on November 1, 2010 - at the time of his death, he had done another eight weeks that had yet to air, but these were dubbed over by various substitutes as ''Wheel'' claimed "it was a tough decision, but it would have been too sad to hear his voice so close to his death"...yet they left the weekend feed, consisting of Season 27 shows, alone. In Summer 2011, some of the sub-announcer shows were dubbed over by the just-hired Jim Thornton (including episodes where a sub had dubbed over Charlie), but shows from September and October 2010 retained Charlie's announcing. To say fans were displeased with and confused by these decisions would be putting it '''extremely''' mildly.
** ''Series/{{Jeopardy}}'' sometimes has to scrub contestants out for various reasons:
*** Perhaps one of the most famous was an early undefeated champion named Barbara Lowe. According to many accounts, she was a total JerkAss on air, to the point that she actually argued with Creator/AlexTrebek over a response that the judges deemed incorrect. In addition, she broke eligibility requirements, as she had been on multiple other game shows in the past few years (there are strict limits on how many game shows a person can be a contestant on in a given amount of time), and many of them under false pretenses. As a result, she was barred from the Tournament of Champions, and her winnings were withheld until she threatened a lawsuit.
*** 2014 contestant Jerry Slowik was also barred from the Tournament of Champions after legal issues stemming from alleged sexual assault of a minor.
*** On a broader scope, the show makes no acknowledgement that ''Super Jeopardy!'' ever existed. This was a one-time championship series of games from 1990 which aired on Creator/{{ABC}} (''Jeopardy!'', like sister show ''Wheel'', normally airs in first-run syndication) and, uniquely to the Trebek era, invited back a contestant from the original 1964-74 Art Fleming-hosted version. Although this incarnation produced some rather steep winnings, none of them are considered ''Jeopardy!'' canonicity (possibly in part due to the one-time nature of the event, its radically inflated clue values, or both).
* ''Series/BuffyTheVampireSlayer'' mostly ignored [[Film/BuffyTheVampireSlayer the movie]] it was based on. The only real references to it are that Buffy was kicked out and the whole Watcher/Slayer relationship. Worth noting is no mention of Pike and only a brief mention/scene of Merrick being her first Watcher (who looks extremely different from Donald Sutherland) in a late Season 2 episode. And then there were multiple references of "burning down the gym to kill all of the vampires in it", a part missing from the movie. Technically the series isn't based on the movie as aired, but on the original script (written by Creator/{{Joss|Whedon}}) the movie was ''[[ExecutiveMeddling based on]]'', which included Buffy burning down the gym.
* The Creator/BigFinish version of ''Series/TheTomorrowPeople'' includes a list of ''homo superior''s who died when their powers first manifested. This turns out to include the characters from the 1990s {{Revival}}.
* ''Franchise/PowerRangers'':
** After Saban re-acquired the franchise, executive producer Johnathan Tzachor made a post on the official message boards saying that he considered every season made by Disney (from ''[[Series/PowerRangersNinjaStorm Ninja Storm]]'' through ''[[Series/PowerRangersRPM RPM]]'') non-canonical. [[LyingCreator That is]] until the news came that Toei was filming a [[Series/KaizokuSentaiGokaiger Legend War]] sequence for the 20th Anniversary, and all the teams (both from Saban and Disney) are a part of it (then again, Tzachor also claims that every incarnation of the franchise is its own continuity, even when all onscreen evidence claims otherwise, so fans are generally content to ignore him).
** Conversely, Paul Schrier mentioned at Comic-Con 2011 that, while the current Saban Brands production regime does not like the Disney seasons and wishes they did not exist, they are in-continuity and have not been disowned.
* ''Series/StargateSG1'':
** Early on, the Zat gun was said that "one shot stuns, two shots kill, and three shots disintegrate." They used the third shot a few times until they realized [[SciFiWritersHaveNoSenseOfScale how much energy that would actually require]], and this element was quietly dropped. This was later self-parodied in "[[WhoWouldWantToWatchUs Wormhole X-treme!]]" with one of the writers saying: "That is the stupidest thing I've ever heard."
** The difference between the show and [[Film/{{Stargate}} the movie]] is extreme. Ra goes from being the LastOfHisKind to the leader of the Goa'uld System Lords. Abydos is moved into the Milky Way from another Galaxy. The Jaffa are invented and Ra's species made into the Goa'uld. WordOfGod explained the movie's Ra being one of TheGreys as him having implanted himself into an Asgard. The way the Stargate functions is also considerably different in the movie than in the show. However, references to the movie's events never stopped, and many fans will point out we never had it on good authority that Ra was the last of his kind (the tablet Daniel read from said he escaped his dying world; it's unclear what led people to jump to the conclusion that there was absolutely no way anyone else did the same.) ''SG-1''[='s=] relationship with the movie is "[[BroadStrokes the movie mostly happened, but we change what doesn't work for us]]", although one change that was inconsistently handled due to the writers [[OmnidisciplinaryScientist not knowing how to write for her]] were mid-season episodes that claimed Sam was responsible for making the Stargate work and kicking off the Stargate Programme: that credit is supposed to lie with Daniel Jackson, which a lot of episodes do acknowledge.
** Jackson recounts in the film the history of how Ra came to Earth, having found it in hieroglyphs on Abydos. Ra's race are specifically mentioned as being on the verge of extinction, with Ra escaping from his dying world and scouring the galaxies (plural) for a way to extend his own life, finally settling on infesting the body of a boy to cheat death. Ra's background often misremembered by fans of SG-1 and beyond as having more continuity with the series. There is even a brief moment during Jackson telling the story that we see Ra's original alien form, with it being most definitely a humanoid rather than a snakelike parasitical life-form. We also see this form briefly when Ra realises he and his ship are about to be destroyed by the bomb. SG-1's inconsistencies with the original film can be hand-waved if it's assumed that the same events happened in the series' continuity, but slightly differently.
** The episode "Hathor" was effectively struck from canonicity due to the writers considering it the worst episode they ever wrote. Hathor reappeared later at the head of a Jaffa army she'd brainwashed away from several other Goa'uld, but [[BizarreAlienSexes how Goa'uld queens work]] was retconned due to the {{squick}}iness of the original explanation, and characters would [[LetUsNeverSpeakOfThisAgain refuse to talk about the events of the episode when asked]].
* This existed between the ''Franchise/{{Highlander}}'' movies and series to the point of {{Continuity Snarl}}s at times. (see the Film entry)
* ''Series/{{CSI}}'':
** Official info on the CBS character bios was changed and/or ignored. The bios had Catherine being born in Bozeman, Montana (probably recycled and given to NY's Lindsay) and having a sister, and Grissom's father being involved in smuggling. Making it worse was this information being included in the first episode guidebook that was released.
** The famous "Danny was from a family of cops" stuff. The producers retconned this by saying "extended family", but many still don't buy it.
* ''Series/SamAndCat'', which is a SpinOff that takes one character from ''Series/ICarly'' (Sam) and one from ''Series/{{Victorious}}'' (Cat), appears to retcon the ''iParty With Victorious'' CrossOver episode from those two prior franchises. Instead of the pair recognizing each other from the events of that episode with them meeting each other in person and spent much of the episode together, Cat only recognizes Sam by way of Cat knowing about the Series/ICarly webshow.
* Austrian series ''Die Piefke-Saga'', part 4. The series parodied German tourists in Austria and the industry in general. Said part was set in the future, where Tyroleans were replaced by androids, while the last remaining natives had become LaResistance.
* ''Series/SesameStreet'' is constantly retconning itself due to having a sliding timeline.
* ''Series/OnlyFoolsAndHorses'''s writer, John Sullivan usually liked to pretend that the 1986 Christmas Special, "A Royal Flush" never happened, due to Del being absolutely cruel to Rodney by ruining his chances with the daughter of an aristocrat. Sullivan only allowed the episode to be released on video and DVD due to demand from the fans, and even then it was in the form of a severely edited version in which Del is a lot less mean.
* ''Series/DoctorWho'':
** MissingEpisode reconstructions occasionally use this to "fix" things the BBC would rather didn't happen. For example, the interview with Anneke Wills at the end of the official audio reconstruction for "The Underwater Menace" reveals that she and the director had agreed to alter a part where [[GetAHoldOfYourselfMan Jamie slaps Polly in the face to get her to stop freaking out]] because, in addition to being unnecessarily chauvinistic, it was [[OutOfCharacterMoment really out-of-character for Jamie]] (who had [[CharacterizationMarchesOn just recently been introduced]]). In the reconstruction, he merely roughly pulls her to her feet, which is enough of a shock to shake her out of her panic. Another example is how the reconstructions deal with [[ValuesDissonance the random racial slur]] in "The Celestial Toymaker" - the BBC's official reconstruction buries it by having the narrator talk over the top of it, and Loose Cannon's reconstruction edits the line out entirely.
** Between the nonsensical plot and the perceived bad quality, "[[Recap/DoctorWho30thASDimensionsInTime Dimensions in Time]]" has been officially stated by the BBC never to have happened (both the webpage and the ExpandedUniverse agree that it is AllJustADream) despite having been intended at the time to be canonical (as, in the eyes of the producer, bad canonicity was better than no canonicity at all).
** "WebAnimation/DeathComesToTime" totally ignores the events of the TV Movie (the Doctor is still the Seventh Doctor) and serves as an "ending" for the show.
** "WebAnimation/ScreamOfTheShalka" was an attempted {{Reboot}} and introduced a new Doctor and a new Master, now his companion. Hopes were to use it to get a new series launched, but the eventual actual revival made a point of ignoring it as Creator/RussellTDavies strongly disliked it.
* ''Series/{{Dallas}}'' made not just an ''entire season'' discontinuity, but also its ''spinoff series'' ''Series/KnotsLanding'' when said season was made AllJustADream to bring Bobby Ewing BackFromTheDead, although that wasn't the only reason that season was removed, as the writer behind it wanted to undo everything that happened while he was gone.
* A weird example occurs in ''Series/{{Community}}''. Due to ExecutiveMeddling, creator and showrunner Dan Harmon was unceremoniously given the boot in season four, only to be rehired for season five. Although the series technically follows on directly from series four, with the characters having graduated from Greendale only to be drawn back to form the so-called Save Greendale Committee as a group of both faculty and students, much of the events of season four are stricken from canon, and the group's senior year at Greendale is referred to as Gas Leak Year, blaming all of the inconsistent characterisation or sub-par adventures on a gas leak which caused everyone to act strange, even by their usual standards. This works both ways; when Abed reconnects with Rachel, a girl he formed a genuine connection with in season four who goes on to be his love interest in season five, they both blame the fact that they fell out of touch on Gas Leak Year.
* The failed TV pilot ''Film/BatesMotel1987'' ignored ''Film/PsychoII'' and ''Film/PsychoIII'', and set itself up as an alternate sequel to the original 1960 ''Film/{{Psycho}}''. Which also had the side-effect of making it quite easy for the subsequent ''Film/PsychoIVTheBeginning'' to ignore ''Bates Motel'' after it didn't get picked up for the series (short of some alterations to the motel buildings made in ''Bates Motel'' still being present in ''Psycho IV'', as that film didn't have the budget to restore the motel to its original configuration).
* The 2018 reboot of ''Series/{{Roseanne}}'' retconned away the more bizarre aspects of the original show's ninth and final season, such as the family winning the lottery and Dan's death after Darlene's wedding. One of the establishing moments of the reboot was showing a very much still-living Dan and saying that Dan's death was itself part of the in-universe book Roseanne had written.

* Music/TheDivineComedy's first album, ''Fanfare For The Comic Muse'', is very firmly this; it's been long deleted, and nobody - least of all Neil Hannon - seems to want it rereleased.
* Music/ToriAmos and Music/{{Genesis}} do their best to pretend their first albums don't exist. ''Y Kant Tori Read'', like ''Fanfare'', is long deleted, and ''From Genesis to Revelation'' probably would be if anyone from Music/{{Genesis}} had their way, but they don't own the rights to it, their then-manager does. Music/{{Genesis}} also likes to pretend that the widely panned album ''Calling All Stations'' (featuring Ray Wilson on lead vocals) never happened either. No songs from that album were included on the 2006-2007 reunion tour.
* Music/DavidBowie never includes his first self-titled album (his second self-titled album was later renamed "Space Oddity") in his discography. His early novelty song "The Laughing Gnome" is generally acknowledged as something that ''should not and should have never existed''. When {{Troll}}s hijacked a fan vote for what songs he should play on a tour so that it came high up, he scrapped the poll altogether. And ''Never Let Me Down'' (1987) is not only often considered his worst canonical album, but one song on it ([[http://www.teenagewildlife.com/Albums/NLMD/TD.html "Too Dizzy"]]) was [[http://en.wikipedia.org/wiki/Never_Let_Me_Down#Reissues dropped from reissues.]]
* Music/{{Eminem}}'s debut album, ''Infinite'', was a complete commercial failure, and has never been reissued. The songs featured a very young Eminem performing in smooth R&B styles he would never revisit, and none of the material has reappeared in any form. (While his second release, ''The Slim Shady EP'', has also never been reissued, most of the material was either repeated or remade for ''The Slim Shady LP''.) He does, however, reference it in ''Recovery'' song Not Afraid:
-->"From "Infinite" down to that last "Relapse" [[note]](Relapse: Refill)[[/note]] album..."
* Both Music/AlanisMorissette and Music/{{Bjork}} have [[OldShame embarrassing early albums]] they don't acknowledge as part of their discography; Björk's was an LP of covers recorded when she was a child, while Alanis' were teen pop which won her fame in Canada but failed to chart in the US.
* Music/TheDoors have never reissued their two post-Morrison albums, ''Other Voices'' and ''Full Circle'', even in the supposedly ''Complete Studio Recordings'' boxed set. These had at one time allegedly only seen CD release in Russia, and those discs are unauthorized. Both albums eventually became available on iTunes and later reissued as a 2-CD set by Rhino.
* Both the fans and Music/{{Helloween}} themselves agree that there's no such thing as ''Chameleon'' in their discography. It was the last album with Michael Kiske on vocals, and the most LighterAndSofter of them all. Nowadays ''Pink Bubbles Go Ape'' has fallen here as well, despite that the band played some of that album's songs, like "Mankind" and "The Chance".
* While ''Music/TheFinalCut'' still exists in the mind of Roger Waters (who still performs its material live), the album was shunned by the other members of Music/PinkFloyd, who had very little input in the disc. David Gilmour in particular was disgusted that Roger would not only fashion a new album out of rejects from ''Music/TheWall'', but have the nerve to credit Pink Floyd as [[IAmTheBand mere sidemen]] on his 'requiem for the post-war dream.' Just one of the album's songs, "The Fletcher Memorial Home", has appeared on subsequent greatest hits albums.
* For Music/{{Pantera}} and their fans, their first album was 1990's ''Cowboys From Hell'', [[OldShame ignoring the previous 4 albums a.k.a. their hard rock/glam era]].
* The British national anthem "God Save The Queen":
** The third verse is now discarded as it is [[LighterAndSofter deemed too belligerent:]]
-->O Lord our God arise,\\
Scatter her enemies\\
And make them fall.\\
Confound their politics,\\
Frustrate their knavish tricks,\\
On Thee our hopes we fix,\\
God save us all.
** The very dated verse six, which makes reference to George Wade and his "rebellious Scots to crush" has also been omitted.
* Only the third verse of "Deutschlandlied" is part of the German national anthem. Verse 1 was already being questioned for its apparent belligerence and imperialism before it was co-opted by the Nazis. It also doesn't help that the borders described in the stanza are now part of other nations, and part of getting four-power assent to German reunification was dropping claims to Silesia, Pomerania and East Prussia. Verse 2 is jingoistic self-aggrandizement that is... [[ValuesDissonance a bit awkward now]], to say the least. Verse 4 was a Nazi invention, so... yeah.
* The third stanza of "The Star-Spangled Banner" is often omitted in official renderings, because it mocks the British military as "hirelings and slaves". Of course, Britain is now a key ally of the USA, making the verse very outdated.
* Only one verse of Maryland's state song, "Maryland, My Maryland," is commonly used today, because the song was originally a Confederate war song that referred to "Northern scum" and called Lincoln a "Yankee despot."
* Both Music/{{Metallica}} and Music/{{Megadeth}} will generally pretend that the eighth album in each of their discographies, ''St. Anger'' and ''Risk'', don't exist. "Generally" is a key word: the material is rarely, if ever, performed in current concerts, but both bands will admit to the albums' existence if pressed hard enough.
* Music/{{Devo}} has generally ignored the entire Enigma Records discography, and their last Creator/WarnerBrosRecords album, "Shout". While they acknowledge their existence, good luck hoping for a re-release, or hearing anything from it performed live again.
* Music/OzzyOsbourne has deleted the live albums ''Speak of the Devil'', ''Just Say Ozzy'', ''Live and Loud'' and even the studio album ''The Ultimate Sin'' from his catalog, and they are no longer being made. The deletion of ''The Ultimate Sin'' most likely has something to do with the legal troubles with a former band member over songwriting credits. At the time it was released (1982) Ozzy made no bones in interviews about hating ''Speak of the Devil'' passionately; he did it only because he was contractually obligated to do a double live album with a lot of Sabbath classics at the time (and the shows in question were recorded mostly after Randy Rhoads' sudden death, not a good time for Ozzy). It helped him out a lot because his versions were a lot better than what his former bandmates served up on ''Live Evil''. It's not a great surprise that as soon as he could put it out of print, he did so. Meanwhile, removing ''The Ultimate Sin'' from the canon probably didn't raise too many brows, since it's widely considered to be Ozzy's weakest solo studio album by a longshot, due to its heavy glam influence.
* The Goo Goo Dolls started as a HardcorePunk band, evolving into a PopPunk sound that produced both their major label debut ''Superstar Car Wash'' and their commercial breakthrough album ''A Boy Named Goo''. The follow-up, ''Dizzy Up the Girl'', introduced a ballad-oriented folk-pop sound that brought them even greater commercial success. They no longer perform/discuss the old material for obvious reasons. Their 1987 debut ''First Release'' has been out of print since... 1987, and when asked what the chances of them ever playing the pre-''Car Wash'' material again were, they said "take the highest number you can think of and multiply it by three".
* ''[[Music/{{Squeeze1973}} Squeeze]]'', the final album by Music/VelvetUnderground, was never reissued to CD or UsefulNotes/MP3 format and has been out of print on vinyl since the early 80s. It also sounds [[NewSoundAlbum very unlike anything else by The Velvet Underground]] due to the absence of [[FaceOfTheBand Lou Reed]] or anyone else associated with the band aside from Doug Yule. It is also the only album left out of the otherwise retrospective compilation ''Peel Slowly and See.'' The only reason anyone tried to call it canonical in the first place was ExecutiveMeddling. Doug Yule wanted to release ''Squeeze'' as a solo album.
* Music/JudasPriest seems to have all but forgotten about the era of Tim "Ripper" Owens now that Rob Halford is back. In fact, a 2012 box set called "The Complete Albums" contains the band's first two albums (the first release on CD endorsed by the band) but ignores both albums with Tim Owens.
* ''Music/VanHalen III'', the group's only album with Gary Cherone is not mentioned on VH's official website nor do songs from it appear on any GreatestHitsAlbum.
* Music/TheBeatles:
** Music/PaulMcCartney clearly considers ''Music/LetItBe'' to be this, while Music/JohnLennon didn't (George and Ringo were either apparently neutral or didn't make their views on the subject known). The reason for this stems from CreativeDifferences; the album was recorded during a period of tension between the band, and the recordings were shunted aside until producer Phil Spector was brought in to sort them out and make something presentable of them. However, either through oversight or spite no one actually let [=McCartney=] know what was going on, so while Lennon was satisfied [=McCartney=] was horrified to hear what had been done to his original songs (especially "The Long and Winding Road") without his knowledge or permission. ''Let It Be... Naked'', released over thirty years after, is generally considered an attempt by [=McCartney=] to replace the original.
** The American Beatles albums are ignored, with the occasional exception of ''Meet The Beatles''. The canon established in the 1980s with the CD releases and re-mastered in 2009 includes only the UK albums, except for ''Music/MagicalMysteryTour,'' which was never a proper album in the UK, just two [=EPs=]. The live album ''The Beatles Live at the Hollywood Bowl'' has never been released on CD due its awful sound quality, and the early bootlegs ''The Star Club Tapes'' were actively suppressed by the Beatles for the same reason.
* Music/TheKLF did this to their entire back catalog when they left the music business in 1992. Well, specifically they pulled all of their albums out of print to make it clear that their retirement wasn't just a stunt to sell more of their back catalog. Only in the UK, however; one can still buy copies of their American Arista releases. The American releases (and remaining UK copies) have been [[KeepCirculatingTheTapes in high demand with British fans]] since the band retired.
* Robyn Hitchcock disowned his second album ''Groovy Decay'': He pulled it out of print a few years after its release and replaced it with ''Groovy Decoy'', which featured the original versions of four ''Groovy Decay'' songs but mostly consisted of demos from the same period. The original ''Groovy Decay'' album can still be found in its entirety on the box set ''Gravy Deco'' though, and the album even got a 2007 remastered re-release with bonus tracks, although it was only released as a digital download.
* The Music/BobDylan album ''Dylan'' was released without his approval by Creator/ColumbiaRecords after he jumped ship for Asylum Records, pieced together from some dubious outtakes. After he returned to Columbia several years later, it was quietly buried and largely has remained so ever since.
* Scooter:
** Their first single Vallée Des Larmes has been all but ignored. HP Baxxter introduced his signature rapping/singing style on their second single Hyper Hyper, which was successful. Vallée Des Larmes was not included on an album and its only recognition by the band since is the inclusion of a Remixed version on the 1998 compilation Rough And Tough And Dangerous. It appears on the bonus disc, as the remix was a B Side. The reason for them ignoring Vallée is because it's an instrumental, it wasn't successful and it was recorded at a time when Scooter were meant to be a one off project. Its main B Side Cosmos appears on the band's first album And The Beat Goes On, however. In later years, they have acknowledged the influence they had on Scooter and the band have done the odd darkwave inspired song since. They have admitted that it was more financially viable playing Scooter's style of music.
** Sheffield is definitely the OddballInTheSeries and they aren't fond of its lead single "I'm Your Pusher". The second single from the album, "She's The Sun", is widely regarded as one of the band's best songs, but it doesn't really fit in with their repertoire these days. No tracks from the album were included on the UK version of their Push The Beat For This Jam compilation, but they have been on all others.
* Neither of the two original videos for Music/{{Madonna}}'s first single "Holiday" from her debut ''Music/{{Madonna|Album}}'', which featured the pre-MTV, pre-''Lucky Star'' singer dancing in a production studio (featuring an observer dressed in a nightgown in the background), have been included on any of her official video releases. This included 2009's ''Celebration'' DVD collection, which collected almost every other music video she ever released (including a live performance of "Holiday", shot at the same time as the videos). Notably, both versions featured poor production values. In the same vein, the original music video for ''Music/TrueBlue'' (which didn't feature Madonna in it) has never been acknowledged either, due to it being helmed by an amateur director who won an MTV "Make My Video" contest in 1984. Madonna has also refused to play the song at most of her concerts, as the song was written about her (abusive) ex-husband Creator/SeanPenn, after they divorced in the late 1980s.
* The second album by Music/BadReligion, ''Into The Unknown'', actually got better reviews than their first album, but was rejected by fans because it explored prog-rock influences and piano melodies. After selling poorly, it was ignored in the discography for years, only being reissued 27 years later (in vinyl only) as part of a box set.
* CountryMusic singer Joe Nichols has an album titled ''III''. It was his fourth album. The one that was excluded from the chronology? His obscure 1996 self-titled debut on a small indie label — although none of its singles charted in the US, one got to #74 on the Canadian country charts, and all four had music videos.
* Bomshel seemed to quickly ignore the fact that Buffy Lawson was ever one-half of the duo (the other half being Kristy Osmonson). The Lawson/Osmonson pairing recorded a three-song EP, from which all three cuts charted, and a song for the soundtrack to ''Film/EvanAlmighty''. After Kelley Shepard replaced Lawson in 2008, the new lineup quickly tossed aside three of the four songs from Lawson's tenure, keeping only "Bomshel Stomp", before disbanding in 2013.
* Music/TheyMightBeGiants' first-ever music video was for "Rabid Child," created around the time of the song's debut on their ''1985 Demo Tape''. The band very reluctantly allowed a brief fragment to be shown in their ''Gigantic'' documentary in 2002, but will refuse any discussion concerning a full public release. No one knows why.
* Al Jourgensen completely disavows his first album ''With Sympathy'', calling it an "abortion." It's a very poppy dance album as mandated by his record label, sounding nothing like the metal/industrial band they would become. This was also a period of time when Al sang in a faux English accent for reasons he doesn't even know/remember. He does still acknowledge his first single "Every Day Is Halloween" that predates the album. While also a poppy dance number, it remains a fan favorite.
* ''Music/{{Shakira}}'' released two albums as a child before her breakout album "Pies Descalzos", however, they were critical and commercial failures and aren't listed on her official discography.
* Music/KatyPerry's website doesn't mention any of her Christian albums recorded under her real name, Katy Hudson.
* Ads for Jerrod Niemann's 2014 single "Buzz Back Girl", the third single from his third album ''High Noon'', seem to take the stance that the preceding single "Donkey" never happened. This is most likely due to "Donkey" being a ''highly'' polarizing DoubleEntendre-laden novelty that completely self-destructed on the charts, dying at #43 only a few weeks after the album's lead single "Drink to That All Night" hit #1.
* Music/BrooksAndDunn seemed to take the stance that their 1999 album ''Tight Rope'' never happened, despite producing a Top 5 hit in "You'll Always Be Loved by Me". The album was their worst-selling and least successful on the charts, was derided by critics for its tired sound, and had none of its singles appear on their second GreatestHitsAlbum in 2004. Making this omission more egregious is the fact that said Greatest Hits album ''does'' feature "South of Santa Fe" from the album immediately before ''Tight Rope'', which has the dishonor of being their only single not to hit Top 40 on the country charts! (By comparison, their second lowest charting single is "Beer Thirty" from ''Tight Rope'', which still got to #19.)
* Music/TaylorSwift does not perform any of the singles off her debut album, except for an occasional performance of "Our Song" in a more pop style.
* CountryMusic singer Rodney Atkins has disowned "Honesty (Write Me a List)", the only hit from his 2004 debut album, possibly due to EarlyInstallmentWeirdness that put it out of line with the style he developed by "If You're Going Through Hell" two years later.
* For a long time, Music/NewOrder refused to play any Music/JoyDivision songs, wanting to avoid comparisons between them and their former incarnation. Once they felt they'd developed a musical reputation in their own right, they started doing songs like "Transmission" and "Love Will Tear Us Apart" in live shows.
* The Internet didn't seem to indicate the existence of any Music/ImagineDragons [=EPs=] older than 2009, until [[http://imaginedragons-ep.tumblr.com/ some songs]] from a 2008 EP called ''Speak to Me'' appeared on Website/{{Tumblr}} in December 2014. (A few other websites acknowledged the existence of the ''songs'', but not the EP itself.) The band's manager, Mac Reynolds, [[https://i.reddit.com/r/imaginedragons/comments/2qo2jg/demo_ep_speak_to_me_ep_download/.compact explained]] that since only one of the members featured in those tracks -- Dan Reynolds -- remained with Imagine Dragons afterward, the band didn't really consider ''Speak to Me'' one of their own works.
* Music/BillyJoel:
** While "Just The Way You Are" is still one of his best-known hits, he no longer performs the song because he wrote it for his first wife, whom he later divorced.
** Subverted for "Uptown Girl". He also wrote it for an ex-wife, Christie Brinkley, but the reason he stopped performing it is because he feels he can no longer pull off the [[Music/FrankieValliAndTheFourSeasons Frankie Valli]]-style falsetto the song requires. He remains friends with Brinkley, and he usually only performs the song in concert (in a lower key) when she's in the audience.
** He also has the distinction of being the only artist to decanonize a specific ''version'' of one of his songs in ''another'' of his songs: "The Entertainer" contains a scathing look at the music industry that forcibly edited "Piano Man" to make it fit on the radio.
--> "''It was a beautiful song, but it ran too long\\
If you're gonna have a hit, you gotta make it fit\\
So they cut it down to 3:05.''"
* Gaetano Donizetti hated the opera ''Buondelmonte'' because of the bowdlerization it was to his ''Maria Stuarda''. In fact, he pulled ''Buondelmonte'' after a few ill-received performances and refused to stage it elsewhere.
* Music/JethroTull has rarely acknowledged ''A'' or ''Under Wraps'' in its discography and omits both on their 2001 "Best of" collection. ''J-Tull dot com'' is also omitted from the album, but more likely because of its release a few years earlier.
* After the Music/GarthBrooks-as-Chris Gaines movie was cancelled, the album Brooks recorded in the role was effectively deleted from Brooks' catalog. It wasn't included in his second ''Limited Series'' box set nor the digital bundle he offers of all his other non-Christmas albums, has remained out of print, and there's no mention of Gaines on his official website.
* ''Autobahn'' is Music/{{Kraftwerk}}'s first album — officially, that is. [[OldShame The not-too-electronic ones made before it]], ''Kraftwerk'', ''Kraftwerk 2'' and ''Ralf und Florian'', seem to not exist nowadays. Of course, they were made, but when Kraftwerk went fully electronic, Ralf Hütter disowned them, and they've never been reissued.
* Music/JeanMichelJarre:
** The musician started his discography with the 1976 album ''Music/{{Oxygene}}'' for decades. In fact, he had had several releases the previous five years already, including the album ''Deserted Palace'' (1972) and the soundtrack album ''Les Granges Brûlées'' (1973), but also singles with more or less corny music that Jarre released under a number of pseudonyms in order to not be associated with that stuff. Since none of this material had been officially reissued, and much of it still hasn't, the original vinyl releases became sought-after and highly expensive collector's items, and even what bootlegs were made of them cost a fortune.
** After Jarre and his long-time publisher Francis Dreyfus who still owned Jarre's entire back catalog went separate ways, Dreyfus re-released ''Les Granges Brûlées'' 30 years after its original release to cash in on Jarre's older material and the fans longing for it.
** Eventually, Jarre himself, now in possession of his own music again after Dreyfus' passing, released a double compilation album named ''Essentials & Rarities'' with one CD containing a selecton of pre-''Music/{{Oxygene}}'' rarities including both sides of Jarre's rare first single, ''La Cage[=/=]Erosmachine'', as well as the previously unreleased 1969 recording "Happiness Is A Sad Song".

[[folder:Professional Wrestling]]
* The Wrestling/NationalWrestlingAlliance World TagTeam Titles go back to 1950. The problem is that until 1992, no less that twelve different territories made [[ContinuitySnarl irreconcilable]] claims as to just who those World Tag Team Title belt holders were. Prior to the Miracle Violence Connection's 1992 title victory, the official record simply lists "vacant".
* After June Byers shot on Mildred Burke and won the Wrestling/NationalWrestlingAlliance World Women's Title in 1954, Burke refused to accept that she lost the belt since the match was called at one fall instead of the usual two out of three and she had merely [[ILetYouWin conceded the first fall]] to get some breathing room and beat Byers in the next two. So she came up with her own belt in her own promotion, the WWWA, which broke away from the NWA and acted as if she had been holding it for the last 17 years.
* In 1955, Leo Nomellini defeated NWA World Heavyweight Champion Wrestling/LouThesz two falls to three via [[RingOut count out]] and {{disqualification|inducedvictory}}. While the California Athletic Commission declared a title change had taken place and allowed Nomellini to call himself champion until his defeat at the hands of Thesz five months later, officially, the NWA ruled title belts don't change hands due to count out ''or'' disqualification, therefore stating Thesz had been champion the entire time.
* The NWA World Heavyweight Title runs of Killer Kowalski, Wrestling/FreddieBlassie and Verne Gagne were all ignored since they defeated "disputed" champion Édouard Carpentier, whom NWA President Sam Muchnick later declared had no legitimate claim to the title after Montreal promoter Eddie Quinn left the NWA. AAC recognized Kowalski as World Champion, World Wrestling Associates broke away from the NWA for {{seven year|rule}}s, during which time it recognized Blassie as its first World Champion and the Gagne case is part of what lead to the formation of the Wrestling/AmericanWrestlingAssociation.
* The members of the NWA refused to acknowledge Wrestling/TheFabulousMoolah's first reign as the World Woman's Champion. In defiance of this, the World Wrestling Federation decided Moolah's first title reign had not ended, not for twenty eight years anyway. The reigns of Penny Banner, whom Moolah beat for the belt and Betty Boucher, who then beat Moolah, are ignored by both the NWA and WWF/E. During these twelve years, June Byers was the only champion on the NWA record and she doesn't exist in the WWF's.
* After a Wrestling/BuddyRogers match with Killer Kowalski was in ended in Quebec due to Rogers breaking his ankle in the first fall, some states south of the border decided to promote Killer Kowalski as the new NWA World Champion, even though NWA didn't recognize Kowalski. Rogers would actually defeat Kowalski in New York, where Kowalski was recognized as champion, but he continued to claim to be champion even after this.
* Wrestling/BoboBrazil never beat Wrestling/BuddyRogers for the NWA World Heavyweight Title, so says the NWA.[[note]][[NiceGuy Brazil]] initially refused the title because Rogers claimed to have only lost due to a groin injury. Even though Bobo was happy to be champion after a Doctor later clarified Buddy was not injured, the NWA decided to disregard Bobo's reign anyway.[[/note]] Carib wrestlers Jack Veneno[[note]]decided to drop the belt rather than endure the champion's touring schedule, his reign ended up completely ignored[[/note]] and Carlos Colon[[note]]unification with another world title to proclaim a "champion of the universe" ignored[[/note]] never held the belt either! This would actually become a plot point in Wrestling/{{TNA}}, back when it hosted NWA title defenses. Wrestling/RonKillings correctly pointing out the NWA refused to acknowledge any black men as World Heavyweight Champion.
* Victor Jovica's victory over NWA World Heavyweight Champion Ric Flair in Trinidad was struck from the record books after review of the tape revealed Jovica had his feet on the ropes.
* According to the "official" WWE title history, Wrestling/BobBacklund defeated Wrestling/SuperstarBillyGraham for the WWWF Title in February 1978, and lost it to Wrestling/TheIronSheik in December 1983. However, in November 1979, at a cross-promotional show in Japan, Wrestling/AntonioInoki defeated Backlund cleanly for the title, and was announced and promoted at NWF (National Wrestling Federation, a subsidiary of the NWA) shows as being the WWWF Champion. Since the WWWF never authorized this title change, they never acknowledged Inoki as being their first (and, discounting the Pacific-Islander Wrestling/{{Yokozuna}} and Canadian born {{Wrestling/Jinder Mahal}}, who has Indian heritage only) Asian world champion.
* The WWF Light Heavyweight Title was created in 1981 when Perro Aguayo defeated Gran Hamada and defended almost exclusively in Japan (primarily Wrestling/NewJapanProWrestling) and in Mexico (primarily Lucha Libre Internacional). In 1997, the WWF took the belt back and decided to ignore sixteen years of history, proclaiming Wrestling/TAKAMichinoku to be the first champion.
* The Rockers won the WWF Tag-Team Championship from the Hart Foundation on the November 23, 1990 edition of ''The Main Event''. However, due to a ring rope malfunction during the match in the second fall, the title change was stricken. The Rockers never won the titles again.
* Wrestling/KazushiSakuraba's first fight in 1996 against Rene Rooze is not recognized by most mixed martial arts organizations because even though it was not a cooperated match, many feel the rules were too much like pro wrestling to count.
* After Wrestling/{{ECW}} betrayed the Wrestling/NationalWrestlingAlliance, the NWA stripped Wrestling/ShaneDouglas of their World Heavyweight Championship belt and leaned on Wrestling/SmokeyMountainWrestling, who put the belt on Wrestling/ChrisCandido. After the NWA got back on its feet though, it disregarded Candido's reign in favor of [[Wrestling/DanSevern Dan The Beast Severn]].
* Wrestling/NewJapanProWrestling really didn't like how Wrestling/{{WCW}} had [[Wrestling/JushinThunderLiger Jushin Liger]] drop their junior heavyweight title and maintained that he held the belt his entire time in WCW.
* Naturally, all victories Wrestling/TommyDreamer may have scored over Wrestling/{{Raven}} had to be ignored for their feud in Wrestling/{{ECW}} to work. Dreamer was finally able to get an acknowledged win over Raven when Raven went back to WCW though.
* Kayfabe example: on the April 17, 2000 edition of ''Raw'', Wrestling/ChrisJericho upset Wrestling/TripleH and won the WWF Championship, but Triple H - then running the show alongside his wife Wrestling/StephanieMcMahon - [[FalseReassurance promised referee Earl Hebner that he would never touch him again while he was under contract if he reversed the decision.]] Hebner did just that, turning the WWF Championship back over to Trips and striking the match from the records; Trips rewarded Hebner by firing him and nailing the Pedigree. To this day, the official WWE records don't acknowledge Jericho's victory on that night.
* Thanks to the ruling regarding the World Wide Fund for Nature, the WWE had to retcon '''everything''' from before the WWF-to-WWE change to say "WWE". Except in Europe, oddly. And they still do this when writing or talking about said era(s), but on the footage itself, all WWF logos and utterances are legal again.
* Do you remember the time Wrestling/ReyMysterioJr was unmasked in Wrestling/{{WCW}}? Wrestling/{{WWE}} doesn't. This is probably for the best, though, as most feel he should have never been unmasked to begin with. Normally the commission wouldn't have allowed this and would have demanded that Rey stay unmasked, but considering the disrespectful manner of his unmasking and the fact that they hated what Wrestling/EricBischoff did, they allowed him to stay masked. The {{loophole|Abuse}} used to justify this is to claim that because Rey no longer includes "Jr" in his ring name, he's actually now using his uncle's gimmick, despite being smaller and having a different wrestling style than his uncle.
* Keiji Sakoda and Wrestling/SamoaJoe were the first NWA Intercontinental {{Tag Team}} Champions, well that's what everyone except for Wrestling/ProWrestlingZero1 says anyway. As far as Zero 1 is concerned, they never held the belts.
* WWE decided to ignore the fact Wrestling/SheltonBenjamin had trained Wrestling/BrockLesnar in college and served as his tag team partner in the Minnesota Stretching Crew, instead saying Benjamin had been Lesnar's roommate before doing away with any personal connection between them altogether. Though they eventually started acknowledging reality again on their website.
* Wrestling/{{Kane}}'s (kayfabe) marriage to Wrestling/{{Lita}} had to be retconned due to the Wrestling/MattHardy[=/=]Lita[=/=]Wrestling/{{Edge}} debacle. They moved it back into continuity later, and the ''latter'' was retconned (mostly) due to Matt's release and subsequent blackballing from the company.
* During October of 2004, Ray González, who had already been exposed as a mole for WWC against IWA Puerto Rico, announced that "Capitol"(WWC's old name, which he was trying to force on IWA) had formed an alliance with NWA-TNA to decisively end the resistance from IWA. By the time 2005 had rolled around though, González had a falling out with Wrestling/JeffJarrett, which resulted in a match where Ray González defeated Jarrett for the NWA World Heavyweight Championship belt on April 3rd, only to be immediately stripped by the NWA-TNA, who didn't acknowledge the victory. However, when NWA took the World Heavyweight Title out of TNA, it did put González's short reign in its record books.
* NWA Midwest disputed the result of the three way dance Wrestling/MsChif and Wrestling/DaizeeHaze lost to Mickie Knuckles at an IWA Mid-South event and declared [=MsChif=] was women's champion up until she and Diabolic Khaos partner [[Wrestling/HunterJohnston Delirious]] lost a winner takes all match to Daizee Haze and Wrestling/MattSydal. After [=MsChif=] beat Josie to regain the belt, NWA Midwest renamed it the [=Zero1=]-Midwest Women's Title, declaring [=MsChif=] had been the ''only'' person to hold it up till that point.
* If there was anything involving the Wrestling/{{WSU}} name prior to 2006, it was ignored at that time. Then in 2007 the previous year was ignored when it became an all women company.
* [[Wrestling/MadisonRayne Lexi Lane]] first wrestled Jessicka Havok in Newark Ohio during June of 2006, won, and afterwards was hounded by Havok to the end of the year and into the next [[SoreLoser because of it]]. Despite this, Battle Angels hyped its ''[=CyberStorm=] 2007'' i pay per view with a "first time ever" match between the two.
* Could a wrestler's ''entire career'' be removed from the canon? If so, then that's what happened to Wrestling/ChrisBenoit. He [[UnPerson never wrestled]], so all accomplishments are disregarded including his 2004 Wrestling/RoyalRumble win and title victory at Wrestling/WrestleMania XX, and no mention of him is made on the [=WWE=]'s official website. Read up on why [[https://en.wikipedia.org/wiki/Chris_Benoit_double-murder_and_suicide here.]] Wrestling/HulkHogan got the same fate in 2015 after it was found out he made racist and homophobic comments.
* For WWE's burying of wrestlers like Wrestling/BryanDanielson and Wrestling/LowKi on commentary to make any sense, the fact that they did wrestle before joining the company on various independent circuits has to be acknowledged but their matches for national promotions like [[Wrestling/ProWrestlingNOAH NOAH]], New Japan and [[Wrestling/{{AAA}} Triple A]] have to be completely be ignored, even though the crowds on the shows make it plainly obvious they know better. To a lesser extent, Brock Lesnar's dismissal of Wrestling/CMPunk for having gained his reputation in high school gyms requires one to overlook that when Lesnar became a pro wrestler he initially wrestled in front of crowds too small to fill up any high school's gym.
* {{Subverted|trope}} by LLF when it replaced the Juvenil belt with a [[SuspiciouslySimilarSubstitute Junior]] in 2008, then changed it to El Campeonato LLF after Princesa Maya won it in 2014 due to it being the last singles belt they had. All the Junior title holders remained on record while no original Juvenil or Internacional Campeonato LLF winners were listed on the website, the City Of Monterrey and [[GarbageWrestler Extremo]] titles completely absent. It was admitted the new belt was being used to represent the same championship status of the originals as most convenient but added the original champions weren't being axed from the record. LLF just wasn't listing them until it regained the physical belts they held. Supporting this was the Extremo title history becoming visible after its belt was recovered in 2015.
* Wrestling/StacyKeibler regards her time in the wrestling business as this. When she left WWE to go to Hollywood in 2006, she erased all references to her time in WWE and WCW from her bio on her website, and reportedly will not sign any pictures of her from that time period

* When former assistant football coach Jerry Sandusky was arrested [[note]]later convicted[[/note]] on charges of sexually molesting teenage boys, students at Penn State painted him out of a mural showing all the present and past coaches of the football team. His image was replaced with a blue ribbon, the [[https://en.wikipedia.org/wiki/List_of_awareness_ribbons awareness ribbon]] for child abuse. Even moreso, the NCAA erased '''every''' Penn State football victory from 1998-2011 as part of the punishment for covering up the scandal for so long. The wins were eventually reinstated in January of 2015 as part of a settlement between the school and the NCAA.
* From 1912 to 1948 the UsefulNotes/OlympicGames used to feature art competitions which was considered official and with their own medals. Now the IOC considered those events unofficial and the medals won aren't included in the IOC official database.
* After Melky Cabrera was supposed for Performance-Enhancing Drugs, the San Francisco Giants acted like he didn't exist, excluding him from the postseason roster and even not giving him a World Series ring.
* Similarly, Lance Armstrong's 7 Tour de France titles were stripped after he was found to have used [=PEDs=].
* The University of Nebraska-Lincoln football program holds the [=NCAA=] record for most consecutive home-game sellouts (the streak started in 1962, and is still running as of 2016). When the university celebrated the 300th consecutive sellout game in September 2009, they very carefully did ''not'' invite former athletic director Steve Pederson or former head coach Bill Callahan, the two men "credited" with almost ruining the football program and bringing the streak to an end.
* At the beginning of the 1997–98 NHL season, the Buffalo Sabres showed a video of highlights from their previous season ... completely devoid of any acknowledgement of coach Ted Nolan, who all the players agreed had been a big part of their division title win that year (he had even taken home the Jack Adams Award as coach of the year), but was fired afterwards due to conflicts with goalie Dominik Hasek. Nolan wouldn't get another NHL job for nine years, and wouldn't return to the Sabres until 2013.
* For years after his lifetime suspension for what he later admitted were truthful allegations that he had bet on games he managed, Major League Baseball officials acted as if Pete Rose did not exist despite his many records in the game.

[[folder:Tabletop Games]]
* The writers of ''[[TabletopGame/{{Paranoia}} Paranoia XP]]'' from Mongoose Publishing have declared the much-maligned Fifth Edition an "[[UnPerson un-product]]", reflecting how the in-universe dystopia treats anyone it doesn't want around. The also-maligned Crash Era near the end of Second Edition also officially "never happened".
* When White Wolf screwed up with the ''TabletopGame/OldWorldOfDarkness'', they'd often try to correct the biggest disasters by destroying all involved and making sure they would not rise from the ashes. Examples:
** ''Dirty Secrets of the Black Hand'' for ''TabletopGame/VampireTheMasquerade'', which "revealed" that most vampires were possessed by evil spirits, and featured a "liberated" group called the True Black Hand that fought against them. By the time Third Edition came up, said group was wiped out entirely after it was revealed that they'd gotten everything wrong. The 20th anniversary edition brought them back in ''The Black Hand: A Guide to the Tal'Mahe'Ra'', retconning out the evil spirit thing.
** Samuel Haight started off as a villainous {{N|onPlayerCharacter}}PC for ''TabletopGame/WerewolfTheApocalypse'', a disgruntled Kinfolk who ended up killing five werewolves so that he could become one in a blasphemous ritual. This was good. Then he got his hands on an artifact that let him use Awakened magic. This was bad. Then he became a ghoul and started learning vampiric Disciplines. This was worse. Finally, a book came out devoted entirely to killing him, and the minute his soul arrived in the afterlife, it was taken and forged into an ashtray.
** In first edition ''WOD'', a vampire could make other vampires of both [[RaisingTheSteaks animals]] and werewolves. Second edition ''WOD'' plainly admits that the former ("vampire dogs") is stupid and the latter hybrid [[{{Munchkin}} overpowered]], so disallows both.
* Over in the ''TabletopGame/NewWorldOfDarkness'' on the other hand...
** In ''TabletopGame/VampireTheRequiem'' 1e, vampires were ImmuneToBullets (shooting damage downgrades to Bashing), but for some reason still took Lethal damage from swords, spears, etc. In 2e, having realised that this was part of the same absurdity that led to just about everyone in the [=OWoD=] toting katanas and swords all the time, all weapons damage was downgraded, making the Damned just generally MadeOfIron.
** In ''TabletopGame/WerewolfTheForsaken'' 1e, werewolves were forbidden from mating with each other because, unlike in ''TabletopGame/WerewolfTheApocalypse'', the result would not be a Metis[[note]]deformed shapeshifter whose natural form is the most powerful of the forms[[/note]], but an Unihar, a "spirit wolf" -- an irredeemably evil spiritual FetusTerrible that would do its damndest to kill all werewolves upon coming to term. Having realized the UnfortunateImplications of this, 2e quietly dropped them, and made it that a werewolf/werewolf coupling only produces a particularly strong wolfblood.
* ''TabletopGame/{{GURPS}} TabletopGame/{{Traveller}}'' disavows the Rebellion (from ''[=MegaTraveller=]'') and the Virus (from ''[[JumpTheShark Traveller: The New Era]]''), portraying itself as an "alternate history" from ''TabletopGame/{{Traveller}}''. Other ''TabletopGame/{{Traveller}}'' products keep the Rebellion and ditch the Virus, or keep both (fans and players are similarly split; see BrokenBase).
* ''TabletopGame/DungeonsAndDragons'':
** Writers for Creator/{{TSR}} went so far as to mention explicitly in a reboot continuity guide for the ''World of TabletopGame/{{Greyhawk}}'' campaign setting that ''Greyhawk Ruins'' was to be considered the [[WordOfGod official]] version of Castle Greyhawk and not the pretty dated and unfunny parody module ''Castle Greyhawk''.
** ALL of the ''TabletopGame/{{Eberron}}'' {{Tie In Novel}}s are considered non-canonical.
** The TabletopGame/{{Ravenloft}} novel ''Lord of the Necropolis'' has been sealed in the earth below canonicity with an Imprison spell for revealing the nature of the Dark Powers, which is a thing you are really, really not allowed to do.
* ''TabletopGame/{{Warhammer}}'' and ''TabletopGame/{{Warhammer 40000}}'':
** Because no one's entirely sure if the Chaos God Malal is owned by Games Workshop or the comic book author who introduced him to the franchise, GW dropped all mention of him from their gamebooks to be on the safe side. He still gets a few references; for example there's a Chaos Space Marine warband called "Sons of Malice" that wears Malal's colors, the rulebook for the spinoff game ''TabletopGame/{{Inquisitor}}'' includes a weapon very similar to the ones used by champions of Malal in the list of daemon weapons, and he appears in one of the short story collections GW released, though he is know as "Malice" there.
** The [[OurDwarvesAreAllTheSame Squats]] have been stricken from all records, partly due to a shift towards a [[ShooOutTheClowns "more serious"]] direction, partly because their attempted army book became an absolute mess after pre-production. For a while it was established canonicity that they ''did'' exist, but only just long enough to be entirely eaten by [[HordeOfAlienLocusts Tyranids]]. Then the Squats came back, but recognized as a type of abhuman rather than a distinct race.
** By the third edition, the Star Child and attendant background elements introduced in Slaves to Darkness had been officially stricken, with a note in the corebook that the "Star Child cult" was a minor Tzeentchian cult that had been obliterated.
** The Fimir got almost entirely excised from the canon, because there weren't any female Fimir and they could only reproduce through... well, {{rape|AsDrama}}. They've slowly been reintroduced through Forge World and references in the 8th edition Rulebook, but are substantially different.
* ''TabletopGame/MagicTheGathering''. Karona meeting [[BigBad Yawgmoth]], apparently still alive, in the ''Scourge'' novel has been {{retcon}}ned as having been an impostor. Or it could have been a {{Psychic Dream|sForEveryone}} of the past.
* ''TabletopGame/{{Exalted}}'':
** Scroll of the Monk is a much-maligned product and OldShame of writer Dean Shomshak. The [[PromotedFanboy Ink Monkeys]] have gone on record as saying it does not exist beyond an example of not reading the rules before making a book.
** Zeal was widely panned before Errata Team Prime finally canned it.
** Even the most vocal of the current writers and editors are of the opinion that the first 2-4 chapters of ''Manual of Exalted Power: Infernals'' should not be read, discussed beyond variations on "it's awful", or used in character backstories.
** ''Third Edition'' is a complete reboot of the setting, and as such numerous aspects are set to be altered, if they return at all.
* ''TabletopGame/{{Shadowrun}}'':
** Many of the earlier novels. Before the 2nd Edition, when the game really found its voice, Shadowrun was portrayed very much as ''Tabletopgame/DungeonsAndDragons'' [[RecycledInSpace/TabletopGames In The Future (!!!)]], with a heavy emphasis on bizarre creatures, cyborgs, mad science, and otherworldly spirits. This led to such things as characters somehow rising from the dead, invasions by {{Eldritch Abomination}}s across the planes, and ''(especially)'' a dying corporate [=CEO=] having his brain implanted into a glorified tumor in a jar, communicating via Matrix hookup. Nothing is ever declared non-canonical, per se, but whenever a sourcebook finds itself having to cover material from this earlier era, the Shadowland commentators make a note to remark on just how utterly bizarre these events and creatures are, many thinking them to be just hoaxes or exaggerations.
** In the novels, Dunkelzahn's death was a [[spoiler:HeroicSacrifice meant to help his agents prevent a premature invasion of Earth by the Horrors because of a side effect of the Great Ghost Dance]]. But in all subsequent sourcebooks, this aspect of the event is rarely touched upon, with Dunkelzahn's death being an assassination by unknown parties. One of the exceptions was in ''Harlequin's Back'', [[spoiler:where the players have to fix the aforementioned side effect]], and the prologue implies that Dukelzahn is, on some level, the one setting it into motion. This ''still'' fits in the continuity of the game, technically, as only maybe ''two'' people know what really happened to Dunkelzahn (Harlequin is one of them, and even he's not entirely sure). As far as everyone else in the world is concerned, it really ''was'' an assassination by unknown parties.
* This mixed with OurLawyersAdvisedThisTrope has brought about the final resolution to the Unseen debacle that has plagued ''TabletopGame/{{Battletech}}'' since at least 1995. In June, 2015, Catalyst Game Labs began phasing in new designs for the iconic Unseen designs that cannot be legally used or shown [[note]] Technically, the ''artwork'' for the 'mechs not derived from ''Anime/SuperDimensionFortressMacross'' (which is totally off-limits) can be used, but everyone involved doesn't want another headache with art that wasn't made in-house by FASA/Fanpro/Catalyst[[/note]], ones that are evocative of the originals but different enough to be considered legally original works. Catalyst has officially stated that the original "Unseen" art is no longer canonical.

[[folder:Video Games]]
* ''VideoGame/EpicMickey'' deliberately ignores the fact that WesternAnimation/OswaldTheLuckyRabbit still appeared in cartoons for many years after Disney lost him. This may be justified as the Disney and Lantz Oswald are treated as two separate characters, but there isn't even an implication given that Ozzie starred in more shorts after Walt lost him.
* Satoru Iwata declared back during the later years of the Wii era that the then-current state of the ''VideoGame/StarFox'' series was either after ''VideoGame/StarFoxAssault'' or somewhere before ''VideoGame/StarFoxCommand''. More than likely to be the former than the latter, if the available information is any credible, as whilst the appearances of the cast in ''[[VideoGame/SuperSmashBros Super Smash Bros. Brawl]]'' do make some '''slight''' reference of certain of ''Command'''s plotlines, they otherwise seem to resemble and behave like their appearances in ''Assault'' far more. Specifically, [[OfficialCouple Fox McCloud and Krystal's]] [[ItsNotYouItsMyEnemies relationship]] [[WomanScorned problems]] from ''Command'' are alluded to in their profiles, but otherwise they're still together and Krystal is still a member of Star Fox (as opposed to joining [[FaceHeelTurn Star Wolf]]), Panther Caruso does not [[ThirdPersonPerson speak in third-person]] and the ships are all pre-''Command''. Of course, the following game, ''VideoGame/StarFoxZero'' is a ContinuityReboot of the series (the second one after ''VideoGame/StarFox64''), making this a moot point.
* Epic has admitted that ''Unreal Tournament 2003'' isn't a complete game, first by refining the original game into ''VideoGame/UnrealTournament2004'' with many of the previously missing features and offering a rebate to ''2003'' owners who bought ''2004'', then by numbering the sequel ''VideoGame/UnrealTournamentIII''. Strangely enough, the backstory of ''2004'' doesn't override that of ''2003'', claiming that every event of ''2003'' happened (such as Malcolm being defeated by Gorge). The same can't be said for the original ''Unreal Championship'', which was set in an AlternateUniverse.
* After Singletrac died, 989 Studios took over the ''VideoGame/TwistedMetal'' series and produced ''Twisted Metal 3'' and ''4'' on [=PlayStation=]. Once Incognito Entertainment (a studio consisting largely of Singletrac employees) regained the rights to the series, they made ''Twisted Metal Black'', which was much DarkerAndEdgier than the original two games and set in its own continuity. The only UsefulNotes/{{PlayStationPortable}} entry in the franchise, ''Head-On'', is set after the second game and ignores the 989 entries. The post-989 entries were much better received, to the point that ''Head-On'' is considered by fans to be the "true" ''Twisted Metal 3''.
* All the ''Franchise/{{Castlevania}}'' games (barring the parody game ''VideoGame/KidDracula'') were part of the canon in some form or another until Koji Igarashi (the director of ''VideoGame/CastlevaniaSymphonyOfTheNight'') took over the series as producer during the development of ''VideoGame/CastlevaniaHarmonyOfDissonance'', removing the two UsefulNotes/{{Nintendo 64}} installments, ''[[VideoGame/CastlevaniaLegends Legends]]'', and ''[[VideoGame/CastlevaniaCircleOfTheMoon Circle of the Moon]]'' from the official timeline. Igarashi clarified that the [=N64=] games and ''Circle of the Moon'' were still canonical, but were demoted to "side-story" status. ''Legends'' on the other hand, was officially retconned out of the series' continuity and is regarded as an alternate universe story.
* Creator/{{Capcom}} has all but said that ''VideoGame/DevilMayCry 2'' doesn't exist - for instance, Dante is a playable character in ''VideoGame/ViewtifulJoe'' [[RuleOfFunny for comedic reasons]], and he ''outright says'' "I don't remember that" when Alastor references the events of ''Devil May Cry 2''. The ''Viewtiful Joe'' appearance also jokingly puts forth the idea that the "Dante" in ''[=DMC2=]'' is actually a friend of Dante's named Enzo, who had been [[IdentityImpersonator impersonating him for some reason]], explaining his decidedly OutOfCharacter behavior. Trish smugly asks Dante if Enzo has [[MuggedForDisguise stolen his clothes again]].
* The novel ''VideoGame/{{Crysis}}: Legion'' has been completely rendered non-canonical by the events of ''Crysis 3''. Unfortunately this means that quite a few plot holes closed by the novelization have been opened back up again.
* ''VideoGame/{{Fallout}}'':
** This happened to both a good chunk of ''VideoGame/{{Fallout 2}}'' and almost all of ''VideoGame/{{Fallout Tactics|BrotherhoodOfSteel}}''. The former for the reasons stated below, the latter because many of the elements contradict [[VideoGame/{{Fallout1}} the original game]] and its backstory. On the other hand, Bethesda seems to have the position that it's valid if it doesn't contradict anything, in relation to ''2'', and events are canonical, [[BroadStrokes details are not]], regarding ''Tactics''. Specifically, when asked about Super Mutants, a Brotherhood Scribe lists fighting them on the West Coast and then near Chicago. Interplay and Black Isle had also dismissed them soon after release, and [[WordOfGod the tattered remnants of the dev team contributing to the Fallout Bible]] continue to do so.
** ''VideoGame/FalloutBrotherhoodOfSteel'', however, is completely exiled from continuity.
** The original ending of ''VideoGame/{{Fallout 3}}'' was... vastly unpopular, to say the least ([[spoiler:the player is forced to flip a switch that will save the day but also douse them with lethal amounts of radiation. Any companions that are immune to radiation will simply refuse to do it for you.]]). The ''Broken Steel'' {{D|ownloadableContent}}LC fixes that by [[spoiler: allowing a companion to flip the switch, or the player do it themselves but be put in a coma for two weeks.]]
** Chris Avellone, one of the head writers for ''Fallout 2'', created a series of [[http://fallout.wikia.com/wiki/Fallout_Bible Fallout Bible]] posts which made a good portion of the game, particularly the overwhelming number of [[ShoutOut cheesy pop-culture references]], non-canonical. Nearly ''everything'' that happened in the town of Broken Hills is non-canonical.
** ''VideoGame/FalloutNewVegas'' however is full of nods to both ''Fallout 2'' and ''VideoGame/FalloutVanBuren'', the game that would have been ''Fallout 3''. Its ''Old World Blues'' DLC is also partly based on content that was cut from ''Fallout 2''.
* ''Franchise/TheElderScrolls''
** Averted with ''[[VideoGame/TheElderScrollsIIDaggerfall Daggerfall]]'''s MultipleEndings. Instead of declaring just one to be canon in the next game, ''all of them'' were made canon in a MergingTheBranches situation using a TimeCrash[=/=]CosmicRetcon known as the "Warp in the West". However, none occurred to the [[BroadStrokes same extent]] they would have individually. (For example, instead of one city-state taking over the entire region, it was split into four with each loyal to the Empire, and Mannimarco did [[AscendToAHigherPlaneOfExistence ascend to become a god]], but in a rather minor station while [[LiteralSplitPersonalities leaving behind a "mortal" version]] of him who now worships the "god" verison.)
** The Dark Brotherhood is a recurring MurderInc faction throughout the series. They are known to be led by a mysterious figure known as the "Night Mother". In ''[[VideoGame/TheElderScrollsIIIMorrowind Morrowind]]'', the "Night Mother" is Severa Magia, an Imperial assassin who brought the Dark Brotherhood to Vvardenfell in an attempt to wipe out the Morag Tong, a ProfessionalKiller organization off of whom the Brotherhood originally split. A high-level Morag Tong quest has you assassinate her. Later games have dropped any connection between the Night Mother and Magia, treating the Night Mother as having been dead for centuries but who continues to lead the Brotherhood posthumously by communicating the the "[[MouthOfSauron Listener]]". (The fandom has mostly settled on viewing Magia as a high-ranking Brotherhood agent but ''not'' the Night Mother herself.)
** The ''Elder Scrolls Travels'' is a side-series of small, mobile phone games developed for Java-enabled devices, including the UsefulNotes/NGage. ''Travels'' consists of ''Dawnstar'', ''Stormhold'', and ''Shadowkey'', with the canonicity of each unclear at best.
* In the late '90s, Creator/{{Konami}} farmed out the development of two ''VideoGame/{{Contra}}'' sequels to Hungarian developer Appaloosa (best known for the ''VideoGame/EccoTheDolphin'' series), who produced ''Contra: Legacy of War'' for the PS and Saturn in 1996, and ''C: The Contra Adventure'' for the PS in 1998. Neither was that well-received by fans and critics alike. In fact, Konami even canceled plans to release a Japanese version of ''Legacy of War''. In 2002, Konami commissioned Nobuya Nakazato (director of ''Contra III'' and ''Hard Corps'') to develop the [=PS2=] sequel, ''Contra: Shattered Soldier''. The unlockable timeline of the game mentions all of the past ''Contra'' games, with the notable omissions of ''Legacy of War'' and ''Contra Adventure'' (and ''Contra Force'', which was just a DolledUpInstallment to begin with). On a related note, the Japanese and American versions of the series had their separate continuities prior to ''Shattered Soldier''. In Japan, the series always took place in the distant future, but in America the early games in the series (namely ''Contra'', ''Super C'' and ''Operation C'') had their plots rewritten so that they took place in the then-present. As a result, when they retained the future setting for ''Contra III'', the changed the identities of the two heroes from Bill and Lance to their descendants Jimbo and Sully. With ''Shattered Soldier'', Konami ignored the continuity of the previous American localizations and followed the original Japanese plot more closely.
* ''Franchise/MetalGear'':
** When the NES port of ''VideoGame/MetalGear'' proved to be successful, Konami commissioned one of their teams to develop a sequel for the American and European market titled ''VideoGame/SnakesRevenge''. This sequel was made without Creator/HideoKojima's involvement and when he was told about it, he decided to make his own sequel for the Japanese [=MSX2=] titled ''VideoGame/MetalGear2SolidSnake''. The ''VideoGame/MetalGearSolid'' games follows the storyline from ''Metal Gear 2'' rather than ''Snake's Revenge''.
** The PSP game ''VideoGame/MetalGearSolidPeaceWalker'' serves as the direct sequel to ''VideoGame/MetalGearSolid3SnakeEater'', completely disregarding the previous PSP game in the series, ''VideoGame/MetalGearSolidPortableOps'' (which Kojima did not direct), aside from a single {{discontinuity nod}}. The ''Metal Gear'' timeline from Kojima Productions omits ''MPO'', showing only seven canonical entries (the two [=MSX2=] games, ''[=MGS1=]'' through ''4'' and ''Peace Walker'').
* Creator/MonolithProductions chose to [[http://www.projectorigincommunity.com/forum/showpost.php?p=5928&postcount=7 ignore]] the two ''[[VideoGame/FirstEncounterAssaultRecon F.E.A.R.]]'' {{Expansion Pack}}s (which were made by a different company, Vivendi) when they started development on the game's ''real'' sequels. As far as the wiki goes, the fandom treats ''Extraction Point'' and ''Perseus Mandate'' as the Vivendi timeline, ''Project Origin'' and on as the Monoligh timeline, and ''First Encounter Assault Recon'' as belonging to both. Some elements from the expansions were kept, however, such as the Replica reactivating despite Fettel's death (though this time with an actual logical explanation, at least for the first group of them), [[spoiler:Fettel coming back from said death]], and [[ArsonMurderAndJaywalking the ability to punch doors open]].
* The official position of Creator/{{Valve|Software}} is that the ''VideoGame/HalfLife1'' addons ''Opposing Force'' and ''Blue Shift'' are not addressed in ''VideoGame/HalfLife2'', its addons, and future sequels. The name of Barney Calhoun and his background as a security guard in Black Mesa were taken from ''Blue Shift'' and incorporated into ''Half-Life 2'', but since all ''Half-Life'' protagonists are {{Heroic Mime}}s and he never mentions any of the events or other characters from ''Blue Shift'' later on, it doesn't actually confirm that it did happen in the official continuity. Valve does, however, seem to consider ''Opposing Force'' canonical from they way they've talked about protagonist Adrian Shepard.
* ''{{Franchise/Halo}}'''s continuity policy directly addresses this; new material automatically overrides old material in the event of a contradiction, while the games (usually) override ExpandedUniverse media, which in turn override promotional materials like the "Believe" ad campaign. Thus, the claims in the older books that Elites, Brutes, and Hunters were never encountered until the last year of the Human-Covenant war were overridden by newer material (and updated reprints of said older books) which had them fighting in the war from the very beginning.
* ''VideoGame/{{Myst}}'' is a little more complicated, as it involves multiple LiteraryAgentHypothesis. The first two books (Atrus, Catherine) do not mention the D'ni society as having slaves, just a caste system. Book of D'ni makes it explicit that slavery is repugnant to D'ni society. Then ''VideoGame/{{Uru}}'' came out, with the storyline's finale in ''VideoGame/MystVEndOfAges''... again, it seems the author of the books "based" his writings on Catherine's journals, which dismiss the clear slavery of the Bahro, for never entirely cleared reasons. As for Book of D'ni, well, people long gave up making sense of it. And then there's ''VideoGame/{{Pyst}}'', which shows how the first game's locations have been overrun by commercialization (and subsequently abandoned), but that was an outright parody.
* ''Franchise/TheLegendOfZelda'':
** Nintendo has outright stated that ''VideoGame/TheLegendOfZeldaCDIGames'' never happened (and not just because Nintendo doesn't own the rights to them). This is taken to such an extreme that an issue of ''Magazine/NintendoPower'' describes ''VideoGame/TheLegendOfZeldaSpiritTracks'' as the first time Zelda is a semi-playable character. She was fully playable in two CD-i games. The official ''Hyrule Historia'', which gives the official timeline of the games, also omits them.
** ''VideoGame/HyruleWarriors'' is meant to be non-canonical from the get-go, taking place in a world separate from the timeline of the series, although [[VideoGame/TheLegendOfZeldaOcarinaOfTime the]] [[VideoGame/TheLegendOfZeldaTwilightPrincess various]] [[VideoGame/TheLegendOfZeldaSkywardSword eras]] from the main series are visited during the game's story.
* [[http://www.insomniacgames.com/community/showthread.php?56339-Did-Insomniac-Ever-Outright-Confirm-SM-and-SAC-Were-Non-Canon&p=1421220&viewfull=1#post1421220 Insomniac Games confirmed]] that the two PSP Franchise/RatchetAndClank spinoffs, ''Ratchet & Clank: Size Matters'' and ''Secret Agent Clank'' (which were developed by High Impact Games instead of Insomniac), are non-canonical to the main games. ''[[VideoGame/RatchetAndClankIntoTheNexus Into the Nexus]]'' likewise ignores mentioning both games in the Insomniac Museum.
-->"We have always treated them as non-canonical while making our games. However, he have done joke nods to them."
* ''Franchise/SuperMarioBros'':
** ''VideoGame/HotelMario'' for the CD-i is disregarded by fans, critics and Nintendo developers alike. Since the canon in ''Mario'' is otherwise very loose and flexible (after all, despite ''VideoGame/SuperMarioBros2'' being AllJustADream and ''VideoGame/SuperMarioBros3'' being a stage play, both are nowadays deeply rooted within the lore and history of the series), the case of ''Hotel Mario'' is unique in its kind: It's not referenced ''at all'' in the Nintendo-produced games, MythologyGag or otherwise.
** ''VideoGame/BanjoKazooie'' and ''VideoGame/ConkersBadFurDay'' were originally part of a SharedUniverse with ''Donkey Kong'' and by extension, ''Mario''. This is no longer true following Rare's transfer to Microsoft, and indeed both characters were removed from the DS remake of ''VideoGame/DiddyKongRacing''. All the BroadStrokes and NegativeContinuity in the world can't get around copyrights.
* When British game publisher U.S. Gold got the license to produce ports of ''VideoGame/{{Strider}}'' for home computers in Europe, they took the liberty of producing an exclusive-sequel titled ''Strider II'', which was later remade for the UsefulNotes/SegaGenesis and UsefulNotes/GameGear and released in America under the title of ''Journey From Darkness: Strider Returns''. Capcom later got to make an arcade/PS sequel titled ''Strider 2'', which completely ignored U.S. Gold's own sequel (though since ''Strider 2'' is a huge TimeSkip, not much would be different).
* In ''VideoGame/GodOfWar'', in an unlockable video [[spoiler:the protagonist, Kratos, visits his mother and learns that Zeus was his father. He's not happy to learn this, and plans to take vengeance on Zeus somewhere along the line]]. Yet in [[VideoGame/GodOfWarII the second game]], [[spoiler:as Kratos is holding a dying Athena, Athena reveals to him that he is Zeus' son, which Kratos is surprised to hear, but declares that he "has no father"]]. The director of the game acknowledged this error in the extras, and states that he was disappointed that they revealed it in the first game, because he finds it more fitting for it to be dropped on Kratos after he is denied his vengeance. He openly said that he doesn't care about the error.
* The creators of the ''VideoGame/StarControl'' series have made it clear that ''Star Control 3'', which was made without their input and was met with overwhelming fan backlash, never happened. So no, the Precursors [[spoiler:aren't cows]]. WordOfGod ''has'' revealed that some of the things in it ''are'' what the creators had intended to do if they'd gotten to make their own sequel, though - such as the part about the Mycon actually being biological terraformers created by the Precursors whose programming has become distorted into a bizarre religion.
* The ''VideoGame/UltimateSpiderMan'' game was initially touted as being 100 percent canonical [[Comicbook/UltimateSpiderMan in the comic book continuity]]. Unfortunately, the comic eventually moved in a direction that made it flat out impossible to treat the game as canonical, so Creator/BrianBendis ended up writing a BroadStrokes PragmaticAdaptation that imported the most relevant bits of the game, while roundly ignoring the elements that didn't fit.
* '' VideoGame/WorldOfWarcraft'': Most of what is said in the ''Warcraft'' tabletop game is ignored, especially considering Whitewolf and Creator/BlizzardEntertainment broke off ties.
* A rather odd case for Banpresto's ''VideoGame/SuperRobotWarsOriginalGeneration''. ''Original Generation'' ([=OG1=]) lets players choose between [[VideoGame/ShinSuperRobotWars Ryusei Date]] and [[VideoGame/SuperRobotWarsCompact2 Kyosuke Nanbu]], whose stories co-exist with one another for the first half of the game. It's only until the second half events unfold differently for either character. Come ''Original Generation 2'' ([=OG2=]), events state only Ryusei's second half of [=OG1=] happened; Kyosuke's second half is never mentioned at all. While this drops loads of {{foreshadowing}} from Kyosuke's second half of [=OG1=], fans were quick enough to deduce Banpresto did this to show that [=OG1=] was never meant to be played in favour for Kyosuke, but the sequel was, since the game was primarily focused on his story from ''[[VideoGame/SuperRobotWarsCompact2 Super Robot Wars Impact]]''. Strangely enough, Kai Kitamura seems to know the other members of the cast very well, even though he's a permanent character in Kyosuke's route. And to celebrate SRW's 15th anniversary, Banpresto released ''Original Generations'' ([=OGs=]), a VideoGameRemake on the UsefulNotes/PlayStation2 of both GBA games, which rehashes the storyline to include {{Early Bird Cameo}}s, new HumongousMecha, the cast of ''VideoGame/SuperRobotWarsReversal'', new characters and a major personality change to [[VideoGame/SuperRobotWarsAdvance Axel Almer]].
* ''VideoGame/LeisureSuitLarry 4''. It doesn't exist. It's not just non-canonical, [[UnInstallment it was never made]]. The real-life explanation is that they couldn't think of a good way to continue from ''Larry 3''[='s=] happy ending, so they just did a sequel anyway and made the continuity errors it produces part of the plot. The story goes that creator Al Lowe had sworn that there would never be a ''4''... before agreeing to make another ''Larry'' game. To keep his oath, he made ''5'' and simply had the characters reference ''Leisure Suit Larry 4: The Missing Floppies'', a title that exists in the game's plot. The cleanup for the plot from ''3'' was an added bonus. The lack of ''4'' even became a plot point in ''VideoGame/SpaceQuest 4''; Vohaul had corrupted the master disks and used them to take over Xenon.
* Another Creator/{{Sierra}} example is that the widely-derided ''VideoGame/KingsQuestMaskOfEternity'' has never shown up on any of the compilation [=CDs=] of the series and has only since been re-released on [[Website/GOGDotCom GOG.com]].
* ''Franchise/SonicTheHedgehog'':
** The ComicBook/SonicTheHedgehogPromoComic was originally the canonical western backstory for Sonic and Robotnik, [[AllThereInTheManual according to the original]] [[http://sonic.wikia.com/wiki/Sonic_Bible U.S. Sonic Bible]]. Once ''VideoGame/SonicAdventure'' retconned the western branch of the series to follow the same continuity of the Japanese storyline, this old backstory was knocked out of canonicity forever (although given none of the games or cartoons ever acknowledged this old backstory in the first place, it's unclear if it was [[ContinuityDrift ever truly established as western canonicity in the first place]]).
** Kevin Eva, who was the community manager of Sega Europe in the mid-2000s, [[https://board.sonicstadium.org/topic/19847-segas-secret-sonic-bible-that-well-probably-never-see-to-mars/?page=10#comment-964735 stated]] that ''VideoGame/SonicChronicles'' is non-canonical to the main games. The Ken Penders lawsuit with Archie and Sega, which involved using substitutes of his own characters from the comics in the game, makes it very unlikely that elements from the spinoff will ever pop up again.
** Eva also added that Sega and Sonic Team like to play fast and loose with what is considered canonical or not in the series, and that what is considered canonical or not can and has frequently changed over time.
-->"One of the things I also went on to say in that thread was that the canon was and is somewhat in flux all the time. As since it is, for want of better phrasing, whatever SEGA want or need it to be at the time. So it could easily change."
** After a [[spoiler:[[DamselScrappy whiny princess]] [[InterspeciesRomance kissed a hedgehog back to life]]]] in ''VideoGame/SonicTheHedgehog2006'', the entire game erased itself from continuity via [[ResetButton temporal retcon]]. Despite this, Crisis City, a stage taking place in the BadFuture timeline in this game, appears in ''VideoGame/SonicGenerations''. Not only that, but characters explicitly ''remember it existing.'' The official Sonic twitter had a rather [[https://twitter.com/sonic_hedgehog/status/608822114368544769 humorous response]] when they were asked about the matter.
** In a rare case of two games that were simultaneously released, ''VideoGame/SonicBoom: Shattered Crystal'' appears to do this to ''Sonic Boom: Rise of Lyric'', as no reference to ROL is ever brought up in SC and Sonic and Lyric apparently meet for the first time in SC with neither recognizing the other. ''Rise of Lyric'' has been officially removed from the canon by the time ''Fire & Ice'' was announced.
** The reimagining of Team Chaotix in ''VideoGame/SonicHeroes'' seemed to imply this as the fate of ''VideoGame/KnucklesChaotix''. Mighty's "last seen" date on a poster in ''VideoGame/SonicGenerations'' being [[VideoGame/SegaSonicTheHedgehog 1993]] instead of 1995 didn't help matters.
* ''VideoGame/LegendOfMana'' is now not considered by Creator/SquareEnix to be part of the main ''VideoGame/WorldOfMana'' continuity.
* The first five ''VideoGame/{{Touhou}}'' games for the PC-98 exist in a weird state where they're not ''completely'' discontinuity, but enough for that status to be widely accepted. The following games for Windows make very few references to the PC-98 games, and what little that carried over is greatly changed. [[WordOfGod ZUN himself]], when questioned, only says that we could ignore the PC-98 games instead of saying anything stronger. Doesn't help that ''Hopeless Masquerade'' had almost all characters of the Windows games up to that point in the background if not outright playable, but none of the PC-98 characters bar Alice and Yuuka, who were already brought back in earlier games. Fans were severely disappointed at the missed opportunity.
* ''VisualNovel/RadicalDreamers'', the text-based (and [[NoExportForYou Japan-only]]) first sequel to ''VideoGame/ChronoTrigger'', was completely thrown out of continuity by the later PS sequel ''VideoGame/ChronoCross'', which was also something of a remake of ''Radical Dreamers''. The events of that game are thrown into an alternate reality... [[MindScrew or something]]. Series creator Masato Kato originally had much greater plans for ''Dreamers'', but the entire game was rushed. ''Cross'' was his way of finishing off his original planned story.[[spoiler:..and the characters of ''Trigger'', while he was at it.]]
* In a cross-medium example, all ''Franchise/AlienVsPredator'' games seem to ignore the existence of ''Film/AlienResurrection'' by depicting xenomorph encounters, Weyland-Yutani xenomorph research facilities, and at least two completely infested planets known to Company executives at a time when the species is supposed to be extinct in known space. The latest game, however, acknowledges one of the ''Alien vs. Predator'' films; however, it ignores all previous games.
* ''Franchise/{{Ys}}''
** In 1993, Creator/{{Falcom}} commissioned two separate companies to developed their own versions of the fourth game. ''Ys IV: Mask of the Sun'' was released by Tonkin House for the Super Famicom, while ''Ys IV: The Dawn of Ys'' was released by Creator/HudsonSoft for the UsefulNotes/PCEngine Super CD (a third version was also planned for the UsefulNotes/MegaDrive, but it was never released). ''Ys V'' was later developed by Falcom and exclusively for the SFC, and all the later ''Ys'' sequels followed the SFC games. The 2005 [=PS2=] remake of ''Ys IV'' was even based on the SFC version.
** Also, both ''Ys: III'' and ''Ys: IV'' received [[VideogameRemake Videogame Remakes]] that {{Rewrite}} certains plot points and replace their old versions in the series canon.
* ''VideoGame/{{Bomberman}}''
** ''VideoGame/BombermanActZero'' is not a part of the main continuity, both on account of it being [[DarkerAndEdgier a radical departure from the series' light-hearted mood]] and from it being a rather terrible game on its own.
** The pre-NES computer games (one of which used the MarketBasedTitle ''Eric and the Floaters''), which used entirely different character designs, are pretty clearly out of continuity as well. The manual for ''[[VideoGame/StarSoldier Star Parodier]]'' lists Bomberman's birth date as "1985年12月20日" (the Japanese release date of the first NES/Famicom game).
* The ''VideoGame/DukeNukem'' games "Time to Kill" and "Land of the Babes", for the original UsefulNotes/PlayStation, while decent in their own right, aren't regarded as canonical. The fact that they were made by different developers probably has something to do with that. Neither is the N64-exclusive installment ''Zero Hour'', supposedly.
* ''VideoGame/SoldierOfFortune: Payback'' was produced by a low-budget developer, seemingly with a GameMaker program, disregards the characters and story of the previous games.
* When it first came out in 2003, ''VideoGame/TronTwoPointOh'' was supposed to be the official sequel to the movie ''Film/{{Tron}}'', since it seemed almost certain that Disney would never make a second film. Seven years later, when they actually ''did'' release another movie, the continuity differences between ''Film/TronLegacy'' and ''2.0'' proved irreconcilable, so ''2.0'' was rendered non-canonical.
* ''VideoGame/GrandTheftAutoAdvance'' is notable in the ''VideoGame/GrandTheftAuto'' series for this. Effectively the only game in the series to receive virtually no input from primary ''GTA'' developer Rockstar North, it features unique characters (i.e. Mike, Cisco, Jonnie and Yuka) and plot developments (bubonic plague occurring in Liberty City and 8-Ball's arrest that resulted from a Colombian Cartel attack) that are never acknowledged in succeeding ''GTA'' games.
* If you search for the ''VirusInvasion'' series, you'll find ''Virus Invasion 1'' through ''7''; however, there actually existed an eighth game which was removed from the timeline. As it was subjected to an OrwellianRetcon, it is somewhat of a MissingEpisode these days. It has a story behind it which sounds like it was taken from a {{creepypasta}}. Firstly, it was an OddlyNamedSequel called ''Little Bear's Adventure''. It took place at approximately the same point in the timeline as ''Virus Invasion 2'', but was actually made first, shortly after ''VI 1'', and used the same (rather glitchy) engine. It was DarkerAndEdgier too: ever noticed how you play as yellow little bear in ''VI 1'' but cyan little bear in ''VI 2''? Well, that's because the first little bear never actually escaped: he was abandoned somewhere when the others left, becoming the protagonist of Little Bear's Adventure. He tries to escape again, [[FailureIsTheOnlyOption but fails,]] ''[[FailureIsTheOnlyOption dying at the end]]''.
* ''Franchise/BaldursGate'':
** The [[Literature/BaldursGate unpopular novelizations]] of the series, in which the protagonist was a {{Jerkass}} KarmaHoudini, was eventually declared non-canonical by Creator/WizardsOfTheCoast. Officially, ''D&D'' video games are all non-canonical to the broader tabletop ''D&D'' continuity, letting the video game designers shake up the world however they like without worrying about treading on tabletop designers' and players' toes. However, most ''novels'' are treated as canonical to the tabletop settings unless stated otherwise (a situation classic ''TabletopGame/DarkSun'' players were familiar with and bemoaned), which is why the ''Baldur's Gate'' novel specifically needed excising.
** The Bhaalspawn saga (as in, there were Bhaalspawn and they all killed each other in a way similar to that explored in the games) was made canonical in 5th edition, noticeably in a way that excised everything from the novels except the broadest of BroadStrokes in that the Bhaalspawn had the novel protagonist's name and class. [[TakeThat Said Bhaalspawn was then unceremoniously killed in the opening shots of 5th edition]].
* ''[[VideoGame/{{WWE}} WWE '13]]'', features a story mode that allows you to play through the company's Wrestling/AttitudeEra as many of its top stars at the time. The first part lets you play as Wrestling/DGenerationX which, as fans who were watching back then remember, started out as the trio of Wrestling/ShawnMichaels, Wrestling/TripleH, and {{Wrestling/Chyna}}. In the game's retelling of the story, it's just Shawn and Trips. Apparently WWE either wants to forget that Chyna ever worked for them, they want everybody else to, or both.
* The now-closed ''VideoGame/DragonBallOnline'' ignored ''Anime/DragonBallGT'' and even certain elements (read: {{Filler}}) in the rest of the ''Manga/DragonBall'' anime. This was due to Netmarble only obtaining the license for the manga and not for the anime.
* ''VideoGame/KidIcarusUprising'' is treated as the only sequel to the original ''VideoGame/KidIcarus'', completely ignoring the UsefulNotes/GameBoy sequel ''Of Myths and Monsters'', possibly due to the fact that the sequel was initially only released in America (with a much, much later Japanese release on the Virtual Console), even though it was made in Japan by Nintendo. This is further supported by ''VideoGame/SuperSmashBros for Wii U/3DS'', as nothing from ''Of Myths and Monsters'' is namedropped at any point in either game.
* The ''Romeo and Juliet'' quest in ''VideoGame/RuneScape'', which, as of a September 2010 update, has the dubious honor of being the first (and, so far, only) quest to be ''completely'' removed (down to most of the characters) from the game and site features -- including a Postbag from the Hedge letter that, by that time, was nearly four years old. The explanation Jagex gave for removing the quest is that it they felt it simply didn't mesh well with the world of Gielinor. Two other former quests (''Sheep Shearer'' and ''Witch's Potion'') simply got demoted to miniquest status, and several other quests were updated or retooled as time went on.
* ''Parasol Stars'', the second sequel to ''VideoGame/BubbleBobble'', has never had a rerelease (not even in a {{compilation|Rerelease}}) and all the spin-off games ignore it.
* ''VideoGame/SuperAdventureRockman'' was officially disowned by Creator/{{Capcom}} and Keiji Inafune for its overly dark tone.
* ''VideoGame/StarTrekOnline'': Set in an AlternateContinuity to the ''Franchise/StarTrek'' ''[[Franchise/StarTrekNovelverse novelverse]]'', both are non-canonical to the show. Elements of the 2009 reboot are ExiledFromContinuity.
* Capcom never released an official statement, but it's safe to say that the events of ''VideoGame/StreetFighter2010'' don't count in [[Franchise/StreetFighter the series]] continuity since Capcom doesn't talk much about this particular game, in the Japanese version, the main character is called Kevin, the name was changed into Ken in the American localization, in order to make a connection with the main games of the series, Ken's role in that game is never adressed in any other further games.
* The second episode of ''[[DownloadableContent Burial at Sea]]'' for ''Videogame/BioShockInfinite'' completely nullifies the story of ''VideoGame/BioShock2'' by [[spoiler:making it impossible for certain elements of the game -- like the Alpha Series Big Daddies and the link they have with the Little Sisters -- to exist within the timeline]]. Of course, the ending of the main campaign [[spoiler:introduced the existence of infinite universes - and by extension, infinite Raptures - so there's probably one where it did happen.]]
** ''Burial at Sea'' also nullifies what's stated in ''Literature/BioShockRapture'' simply because it doesn't include [[spoiler:references to Suchong's ''contact with an alternate universe'', or anything having to do with Elizabeth's presence in the city. Like the above example, we can probably assume that it did not take place in Rapture Prime]].
* The official sequel to ''VideoGame/{{Homeworld}}'' completely ignores the stand-alone ExpansionPack ''Homeworld: Cataclysm''. The only possible hint is the suspiciously low numbers of the [[ProudMerchantRace Bentusi]] left in the galaxy. While many assume it's because the Vaygr killed the rest, it's difficult to ignore that the plot of ''Cataclym'' has the majority of the Bentusi fleeing to another galaxy to escape the [[TheVirus Beast]].
* The 2013 reboot of ''VideoGame/KillerInstinct'' on the UsefulNotes/XboxOne was originally intended to be a follow up to the first two games in the series (and even then, the time travel element of the original sequel was ignored, too). The developer switch from Double Helix to Iron Galaxy brought about a shift in that plan, as Iron Galaxy at first claimed the continuity was on a "sliding timeline" and that the first two games ''might'' have happened in some way, but after the re-introductions of Maya and Kim Wu proved to be substantially different from their original incarnations, fans are in agreement the game has since become a [[ContinuityReboot soft reboot]] of the series as a whole.
* Creator/TetsuyaNomura stated that ''VideoGame/FinalFantasyVIIRemake'' is a separate continuity to the ''Compilation of Final Fantasy VII'' due to the inability to create a consistent feel for the series, and the desire to keep the ''Remake'' like the original in feel.
* "Another End" ending of ''VisualNovel/VirtuesLastReward'' have been declared non-canon by director Kotaro Uchikoshi, since it goes way too far into meta-fiction, with characters addressing the player directly. The ending was tacked on as an afterthought and was ''never'' intended to be canon and the end canonically ended with "END or BEGGINNING" ending. Indeed, ''VisualNovel/ZeroTimeDilemma'' doesn't follow any plotline from "Another End".
* ''VideoGame/TheIdolmaster2'' appears to ignore the events of ''Idolmaster SP'', as it makes no reference of Hibiki and Takane having been part of 961 and never mentions Miki having joined 961 either. The same game also ignores the Awakened Miki storyline from the UsefulNotes/XBox360 game, as Miki not only still dyes her hair blonde, but has also grown it out some more.
* ''VideoGame/ResidentEvilGaiden'', the UsefulNotes/GameBoyColor installment in the ''Franchise/ResidentEvil'' series, has been ignored by every other game in the series.

[[folder:Web Animation]]
* The stinger at the end of ''{{WebAnimation/RWBY}}'' Season 2, in which [[spoiler:Raven Branwen shows up and tells Yang they need to talk]], is never seen to happen during Season 3. Given the permanent changes that take place to the world and characters by the time the season is over, there's literally no time in which that stinger ''could'' have happened.

[[folder:Web Comics]]
* {{Lampshade|Hanging}}d in ''Webcomic/{{Narbonic}}'' [[http://www.webcomicsnation.com/shaenongarrity/narbonic/series.php?view=archive&chapter=10108 here]] and [[http://www.webcomicsnation.com/shaenongarrity/narbonic/series.php?view=archive&chapter=10239 here]], where the "two foremost experts in comic-book continuity" explain away all plot discrepancies.
* In ''Webcomic/{{Erfworld}}'', the [[{{Whatevermancy}} magic school]] of Deletionism (a TakeThat to [[Wiki/{{Wikipedia}} The Other Wiki]]) was replaced by "{{Retconjuration}}" in order to explain how a change was retroactively made to a character's special ability. Therefore, Deletionism has never existed.
* In an early episode of ''Webcomic/TheOrderOfTheStick'', Roy's ghostly father mentions that Xykon killed his master Fyron and his master's son. When these events are depicted in ''Start of Darkness'', no mention of the son is made.
* ''Webcomic/EightBitTheater'': Thief's ninja costume was ''almost never'' red. In context, the outfit was red for the greater majority of one strip. Black Mage lampshaded the color change the following strip while he was descending into his standard state of being pissed off.
-->'''Black Mage:''' (''to Red Mage'') '''You''' suck. (''to Fighter'') '''You''' suck. (''to Thief'') And '''you''' were wearing red a second ago!\\
'''Thief:''' No I wasn't. Besides, what kind of ninja wears bright red?\\
'''Black Mage:''' Ha! I never said it was bright red!\\
'''Thief:''' Neither did I.\\
'''Black Mage:''' Ghk!
* ''Webcomic/ALoonaticsTale'' "Job Hunting" never happened; what we see is a version which was severely neutered to make it acceptable for use in a school assignment. The artist redrew it as "Rehired", the canonical version of the story. Rick and Becky use it as a barometer for what does and doesn't constitute valid criticism; anyone who says they thought the original "Job Hunting" was good, isn't going to be any good to them if they need an editor.
* The Second Eaton arc in ''Webcomic/{{Shortpacked}}'' never happened. You just imagined it. [[LetUsNeverSpeakOfThisAgain Now let's never speak about your crazy, drug-fueled hallucination again.]]
* There's an ''in-universe'' example in ''Webcomic/OurLittleAdventure'' with The Lady of Fate and Fortune. The creation of the Magicant caused so much turmoil and greed that the other gods decided to revoke the Fortune Lady's god status and banish her.

[[folder:Web Original]]
* [[WordOfGod Serris]] says that the rebooted ''Furtopia RP'' is not part of the ''Roleplay/DarwinsSoldiers'' canon and never will be. His next role-play franchise, ''Into the Black'', retconned the existence of ''Racing the Storm'' and everything from it, with the exception of [[BreakoutCharacter Flora the folf]].
* In perhaps the only example of this happening ''in-universe'', the characters of ''Fanfic/{{PRIMARCHS}}'' delete 80 chapters of their own story in order to defeat the Plot Hole.
* A weird example is LetsPlay/{{Raocow}}, who in many of his old videos would always say "That was a demo" whenever he made a mistake and immediately fix it using rewinds or savestates. He has since stopped using savestates as much, to the point that he sometimes {{subvert|edTrope}}s it by saying "That totally happened" when he screws up.
* The ''VideoGame/CrashBandicoot2CortexStrikesBack'' run at [[WebVideo/AwesomeGamesDoneQuick Summer Games Done Quick 2015]] has become this less than 1 week after it was made due to its DudeNotFunny jokes. All official sources refer to ''VideoGame/DonkeyKongCountry3DixieKongsDoubleTrouble'' Lost World as Part 9 and the ''Crash Bandicoot 3'' run as Part 10.
* Subverted in ''WebVideo/TheChurchOfBlow'', where the protagonist of the second series is an actor trying to make a viral Website/YouTube video. Then he starred in the RealLife viral video "Youtube is my Life", which the character is certain does not exist.
* Every LetsPlay by LetsPlay/TheStrawhatNO from before ''VideoGame/BombermanHero'' has been removed from their Website/YouTube channel or set to private/unlisted. Solidified when [=ThornBrain=] updated all of the LP playlists, and ''Bomberman Hero'' is listed as LP #1.
* Sometimes occurs, oddly enough, in ''Roleplay/SurvivalOfTheFittest''. Sometimes a mod or handler declares a scene (mostly in [[DevelopingDoomedCharacters pre-game]] or a character's backstory) as non-canonical, for whatever reason. Two examples of scenes declared non-canonical by a mod include a thread in v1 where a rejected character actually showed up on the island and randomly killed someone, and a scene in v4 pre-game where a character was prostituting herself out for drugs, with the other character having an implausible amount of drugs on him.
* A small group of administrators at Wiki/{{Wikipedia}} have "[[http://en.wikipedia.org/wiki/Wikipedia:OS oversight]]" abilities, allowing them to restrict the contents of a past edit so that only other administrators, or other oversighters, can see what was removed (usually for libel or privacy reasons). In extreme cases, oversighters can remove the edit from the history, so that only they can tell it was even made in the first place.
* The first two installments of ''Literature/ChaosFighters'', ''Route of Land'' and ''Route of Sea'' are no longer canonical and set for rewrite.
* The author of ''Literature/{{Worm}}'' pulled a chapter that he was dissatisfied with a few hours after posting it because it didn't make sense within the context of the story.
* The first episode of ''WebVideo/PopQuizHotshot'' was widely derided, even by people working on it (Brad Jones calling it like ''Film/BattlefieldEarth'', and even Doug talking about the crap Michaud made them do for it). The second episode starts again with Brad gone, Critic hosting and outright calling it the first episode.
* WebVideo/TheNostalgiaCritic:
** In a commercials episode, he spouted that men are too stupid to know they're being harassed and had an episode-long running joke about him. This caused a lot of controversy, plus didn't even make sense for Doug or Critic to say (as they've both complained about getting harassed), and when the Hyper Fangirl StoryArc came around, Critic was ''very'' aware of her, ignoring the above completely.
** With Hyper, while her arc is ContinuityPorn, the fact that she had a SplitPersonality and was HearingVoices originally is ignored by both the show and the DVD recap of her storyline, probably because she has enough issues already.
* Dan, the creator of WebVideo/ConfusedMatthew, has invoked this on his videos released between 2011 and most of 2015, considering them mean spirited and him playing a character rather than giving his actual opinions.

[[folder:Western Animation]]
* The super-deformed shorts from ''WesternAnimation/AvatarTheLastAirbender'' are non-canonical for obvious reasons.
* WordOfGod is that ''WesternAnimation/AvengersAssemble'' is meant to be a sequel to ''WesternAnimation/TheAvengersEarthsMightiestHeroes'', with a {{flashback}} in one episode showing the Avengers in their costumes and [[ArtShift art style]] from ''EMH''. However, this contradicts some elements seen onscreen (namely that Comicbook/TheFalcon makes his debut as a hero in ''Assemble'', while he was already active in ''EMH''), meaning that the three episodes of ''EMH'' Falcon appeared in are either Canon Discontinuity, or [[BroadStrokes happened differently]]. And in one episode of Avengers Assemble, the characters make a reference to a team of high schoolers that Nick Fury is currently training (''WesternAnimation/UltimateSpiderMan''), however two members of the USM team, Iron Fist and Luke Cage, are clearly shown as adults and members of Heroes for Hire in ''EMH''.
* With ''TabletopGame/BattleTech'', the '90s animated series is said to be an animated show within the game's universe. While events similar to it did happen, they did not occur anywhere near like they did in the cartoon.
* According to WordOfGod, the ''WesternAnimation/{{Ben 10}}'' episodes set in the future are canonical, as they portray Kevin as an unrepentant villain. However, in ''[[WesternAnimation/Ben10AlienForce Alien Force]]'' (under a new creative team), he is a [[HeelFaceTurn redeemed good guy]] and remains that way up until the 2016 ContinuityReboot. In addition, the pop-up edition of the episode "Goodbye And Good Riddance" states that the episode is not canonical, and that the real story of Ben's return to Bellwood is the live action film ''[[Film/Ben10RaceAgainstTime Race Against Time]]''. The ''[[WesternAnimation/Ben10UltimateAlien Ultimate Alien]]'' episode "Ben 10,000 Returns" officially established these and future "canon inconsistent" events as alternate universes and timelines.
* ''WesternAnimation/TheFairlyOddParents'':
** ''Film/AFairlyOddMovieGrowUpTimmyTurner'' completely ignores the ending of ''WesternAnimation/ChannelChasers'' as (among other things) Timmy is [[HeldBackInSchool still in fifth grade]] and still has Cosmo and Wanda as fairy godparents. Come ''Film/AFairlyOddSummer'', where [[spoiler: Timmy performed a HeroicSacrifice and AscendedToAHigherPlaneOfExistence]], and the ending to ''Channel Chasers'' is an impossibility. Interestingly, the fanbase loves ''Channel Chasers'' and hates the live-action movies, so they tend to call FanonDiscontinuity on them to undo this Canon Discontinuity. [[MindScrew Confused yet?]] Then again, the series itself makes it apparent that the future is never certain, so one can certainly {{Handwave}} the live-action movies as alternate futures. However, WordOfGod says that the live-action movies are the canon ending for the series.
** Similarly, the Season 9 episode "Let Sleeper Dogs Lie" ignores the events of the episode "The Secret Origin of Denzel Crocker", which revealed that Crocker had Cosmo and Wanda as fairy godparents as a kid, but lost them due to Timmy's interference in the episode, causing him to become bitter. This time around, he had [[TheScrappy Sparky]] as a pet, was always a complete {{Jerkass}}, and simply lost his fairies when he turned 11.
** For an example in which the fans and creators are in agreement, look no further than the episodes "It's A Wishful Life" and "Twistory". The first of these was so unpopular because it basically states, in defiance of all in- or out-of-universe logic, that Timmy's very existence makes the lives of everyone he knows worse, and it would be better if he were never born. The fanbase took offense at the extreme mean-spiritedness of the episode, and the writers have admitted that it was a mistake and consider it an OldShame because of the UnfortunateImplications.[[note]]It is also rumored that the episode was made against creator Butch Hartman's wishes, meaning that he never liked it at any point.[[/note]] For these reasons, it is never aired in reruns, and later episodes are much less harsh to Timmy. "Twistory" is also never aired in reruns, because in its zeal to be patriotic it wound up offending both Americans and British people, by saying that if American independence never happened, the world would never have advanced past the eighteenth century. It should come as no surprise whatsoever that people complained, and the writers apologized. Its canonicity is more complicated, though -- while Nickelodeon tries to forget the episode was ever made, a later episode ("Escape from Unwish Island") mentions the events of this one, albeit obliquely.
** Nickelodeon later began airing a tenth season of the show in 2016. Considering they've already added a new major character that Timmy must share Cosmo and Wanda with, this new season seems set to invalidate ALL of the movies.
* One episode of ''WesternAnimation/FamilyGuy'' involved Lois working as a reporter for Fox news and discovering that Michael Moore and Rush Limbaugh (along with a number of other celebrities) are actually just fictional personas created by Fred Savage. A later episode features Rush Limbaugh having a book signing in Quahog, leading to this conversation:
--> '''Chris''': But I thought Rush Limbaugh was just a fictional character played by Fred Savage...
--> '''Lois''': Where'd you hear that?
--> '''Chris''': Fox News.
--> '''Lois''': Then it's a lie. Everything Fox News says is a lie.
--> '''Chris''': This one's true mom! You saw it with your own eyes and then you reported it on Fox News!
--> '''Lois''': [[MindScrew Even true things once said on Fox News become lies.]]
* ''WesternAnimation/GarfieldAndFriends''' [[https://www.youtube.com/watch?v=Fa0jvoAefp8 third opening theme]] was left out of the final season when it was released on DVD, due to it not being shown on the international masters the [=DVDs=] used.
* The ''TabletopGame/HeavyGear'' animated series is considered by WordOfGod to be an [[ShowWithinAShow entertainment broadcast similar to professional wrestling]] within the ''Heavy Gear'' universe, and thus not representative of how things work in the "real" ''Heavy Gear'' universe.
* ''WesternAnimation/InspectorGadget2015'' directly continues on from the classic ''WesternAnimation/InspectorGadget'', and makes no mention of ''WesternAnimation/GadgetAndTheGadgetinis'' whatsoever.
* ''WesternAnimation/JonnyQuest'': Lance Falk, the head writer of ''WesternAnimation/JonnyQuestTheRealAdventures'', instigated an official policy to ignore the events of the 1984 series and the two made-for-TV movies on the show.
* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'': This is an issue that tends to recur between the franchise's animated portion (''Friendship is Magic'' and ''WesternAnimation/EquestriaGirls'') and its printed portion (the comics series and chapter books such as ''Literature/TheJournalOfTheTwoSisters''). The official statement from the writers on the matter is that the animated part forms the central canon, and the rest of the ExpandedUniverse is to be considered canon where it does not conflict with the animated shows. However, a number of such conflicts have cropped up over time.
** The Season 7 finale, "[[Recap/MyLittlePonyFriendshipIsMagicS7E25ShadowPlayPart1 Shadow]] [[Recap/MyLittlePonyFriendshipIsMagicS7E26ShadowPlayPart2 Play]]", deals extensively with the lore of the show's ancient history, and in so doing contradicts a number of previous accounts of the same.
*** ''Literature/TheJournalOfTheTwoSisters'', a chapter book focusing on the early lives of Luna and Celestia, states that two discovered the Tree of Harmony while exploring the Everfree Forest on Starswirl's advice. "Shadow Play" contradicts this with TheReveal that [[spoiler:the Tree of Harmony was actually grown from a seed planted by Starswirl and the other Pillars shortly before they disappeared. It only grew and was found by the sisters after Starswirl was gone, meaning that he could not have led them to the tree as the book depicts]].
*** The ''[[Recap/MyLittlePonyFriendshipIsMagicIDWIssue17To20 Reflections]]'' arc of the [[ComicBook/MyLittlePonyFriendshipIsMagicIDW IDW comic series]] also comes in conflict with the timing of certain events. In the comic, after the defeat and banishment of Nightmare Moon, Celestia and Starswirl discover a magical mirror that can act as a gateway between worlds and begin exploring the multiverse. However, the reveal in "Shadow Play" that [[spoiler:the Elements of Harmony only grew from a magical seed after Starswirl's disappearance conflicts with this. Since Luna and Celestia wielded the Elements together in the past, and Celestia used them to banish Luna when she became Nightmare Moon, these events can only have happened after Starswirl was no longer around]].
*** The ''ComicBook/MyLittlePonyFiendshipIsMagic'' comic focusing on the backstory of the Sirens and their banishment to the human world is largely incompatible with the events of "Shadow Play". The comic's sequence of events is that the sirens arrive in the city of Canterlot and begain using their hypnotic songs to drain the emotions of the citizens, and a lone Starswirl challenges them to a music contest to break their hold over the crowd. When he realizes he cannot win, he resorts to magically sending them to the human world through a magic mirror. The episode's sequence is that the Sirens take over an isolated seaside village, using their hypnotic songs to turn its inhabitants hateful and drive them to fight each other. Starswirl is summoned alongside five other heroes by one of the village's inhabitants, and they banish the Sirens after a straightforward magical fight by tricking them into a temporary portal Starswirl created for the purpose.
** ''The Journal of the Two Sisters'' also states that Commander Hurricane was the only stallion among the Founders, so that the other five -- Private Pansy, Smart Cookie, Chancellor Puddinghead, Clover the Clever and Princess Platinum -- were by extension all mares. The ''WesternAnimation/EquestriaGirls'' short "[[WesternAnimation/MyLittlePonyEquestriaGirlsForgottenFriendship Forgotten Friendship]]", however, rather unambiguously refers to Clover as a male.
* ''WesternAnimation/{{Rugrats}}'': Arlene Klasky has said in an interview that she would take delight, along with Gabor Csupo, in making new episodes. Of course, this would mean ignoring the events of ''WesternAnimation/AllGrownUp''. Rumor has it that Klasky/Csupo were sick and tired of the spin-off anyway (keep in mind, the spin off only existed due to [[ExecutiveMeddling executive demands]]).
* ''WesternAnimation/TheSimpsons'':
** Every [[BizarroEpisode Halloween episode]] is [[RuleOfFunny out of continuity]]. To the extent that the show ''[[NegativeContinuity has]]'' continuity.
** The much-reviled episode "[[Recap/TheSimpsonsS9E2ThePrincipalAndThePauper The Principal and The Pauper]]", where it's revealed that Principal Skinner is in fact a [[FormerTeenRebel former street punk]] pulling a DeadPersonImpersonation of the real Seymour Skinner (who wasn't actually dead), has been marked as non-canonical by the writers. Principal Skinner is definitely the genuine article, except on the ''very'' few occasions when the episode's referred to for the sake of a usually [[SelfDeprecation self-deprecating]] joke. {{Lampshade|Hanging}}d in "[[Recap/TheSimpsonsS11E22BehindTheLaughter Behind the Laughter]]" where it presents "The Principal and the Pauper" being written during a period where the Simpsons had a massive falling-out and couldn't stand to be around each other. As a result, the show was forced to resort to [[TakeThat "increasingly nonsensical plots and storylines"]]; cue Principal Skinner announcing he's an impostor.
** The negatively-received "That 90's Show", which attempted to retcon Marge and Homer meeting and getting married in the 90's instead of the 70's and early 80's, has been completely ignored with later episodes revisiting their past once again using the timeline introduced in "The Way We Was". This means that, when the show ends its run in 2019 (according to one of the producers, though this could be another false alarm), Homer Simpson (born in either 1955 or 1956, depending on which date you believe) will effectively be in his mid-sixties, while Bart (born in 1981) will be an even younger-looking 38-year-old than Benjamin Button.
* The ''WesternAnimation/StargateInfinity'' cartoon is officially not part of the canonical ''Franchise/StargateVerse''.
* ''WesternAnimation/StarTrekTheAnimatedSeries'' was largely deemed non-canonical by Paramount for decades, even though writers referenced events from the show and managed to force select elements (most notably the episode "Yesteryear", which told of Spock's childhood and was widely regarded as the cartoon's best episode) into canonicity if only because of their popularity with fans. While the ExpandedUniverse novels got away with referencing the cartoons, in 1989 Paramount put into its contract with DC Comics that writers could not use or reference the cartoon, much to writer Peter David's horror. Ultimately, to promote the cartoons getting a DVD release, CBS, the new owners of the property, did a fan poll to decide once and for all the canonical status of the cartoon, with fans voting overwhelming to make the company finally acknowledge it as part of the show's official continuity.
* It seems everything Disney made before ''WesternAnimation/SteamboatWillie'' is considered discontinuity as Pete, Mickey, and Minnie Mouse are all labeled as having debuted in it. Pete actually first appeared three years earlier in an ''Alice Comedy'' cartoon called ''Alice Solves the Puzzle'', while the other two mice debuted earlier in 1928 in ''Plane Crazy''. Of course considering that their first cartoon featured AttemptedRape [[CharacterizationMarchesOn by the world’s biggest and most kid-friendly icon]], it makes sense Disney does not talk about it; Plane Crazy was completed first, but Steamboat Willie was shown in public first, so Disney considers Mickey and Minnie's debut in the later cartoon.
* {{Lampshade|Hanging}}d in the FakeCrossover of ''WesternAnimation/StevenUniverse'' and ''WesternAnimation/UncleGrandpa''. When Steven expresses surprise to see him, Uncle Grandpa assures him (and the audience) that "None of this is canon." [[note]]But this is! BOOM![[/note]]
* ''WesternAnimation/PhineasAndFerbStarWars'' likewise ends its opening crawl by noting "And none of this is canon, so just relax." Having said that, they decided to make a few moves they never would in the body of the main series, like actually having [[OfficialCouple Phineas and Isabella hook up]] (this did happen in the flash-forward near the end of the show).
* On ''WesternAnimation/TheTransformers'', the BigBad Unicron was revealed in season three to have been a GoneHorriblyRight experiment by an alien MadScientist named "Primacron" - his intent was that Unicron would devour all life in the universe, and then Primacron could repopulate the universe with lifeforms of his own creation and design. All subsequent installments of ''Franchise/{{Transformers}}'' have stuck with the idea of Unicron as a [[SatanicArchetype Satanic]] EldritchAbomination, a concept from the Marvel Transformers comics.
* ''WesternAnimation/SpiderManTheNewAnimatedSeries'' was originally meant to be a bridge between ''Film/SpiderMan'' and ''Film/SpiderMan2'', but the ''Film/SpiderManTrilogy'' ignored it as the show depicted Curt Connors as having mutated into the Lizard and died, and ''2'' and ''Film/SpiderMan3'' showed a still-living and unmutated Connors. Additionally, the show depicted Peter and Harry as still sharing an apartment whereas the sequels shows Peter living in a rundown apartment and Harry living in his dad's penthouse, and chances are good this took hold with Norman Osborn's death. While probably coincidence, the only things that did carry over were Harry's drinking, and the tense relation between Peter and Harry over Peter taking pictures of Spider-Man.

* ''Toys/{{Bionicle}}'':
** The climax of the 2001 storyline is a major ContinuitySnarl which the authors solved by applying this trope. The first book, a web game and a scrapped video game all depict the event - involving a FusionDance, a battle with [[GiantEnemyCrab Manas]], then a confrontation with [[BigBad The Makuta]] and [[ThePsychoRangers Shadow Toa]] - in irreconcilable ways. According to WordOfGod, the events went as follows: The Kaita are formed inside two devices before the fight with the Manas. There are only two Manas, and are defeated by demolishing energy-towers. Makuta's presence separates the Toa, who then fight their Shadow counterparts. These are defeated by the six Toa each absorbing their own clones into themselves. Then Makuta is fought and defeated, and the Toa are teleported to the surface, which has been kept clear of Makuta's Rahi forces by the villagers' army.
** Most of the beginning of the novel ''Makuta's Revenge'' has been scrapped in favor of the way the scenes played out in the on-line animations.
** The introduction of the movie ''The Legend Reborn''. It has so many things that clash with the storyline's continuity, whether established previously or afterwards, they simply chose to ignore it. That is not to say the ''events'' themselves didn't happen. They just happened in a way that contradicts the movie's visuals (like Mata Nui's island is shown being covered with lush jungles when according to the canon, it was a barren wasteland).
** A couple of things from the on-line clips and the first movie trilogy get ignored, most infamously the shipping scenes, as there came to be a NoHuggingNoKissing rule.
** Taxi crabs were considered de-canonized for years because the writer didn't like the joke. They slowly drifted back into canonical territory, though.
** The part about the tribes on Mata Nui renaming themselves from "Tohunga" to "Matoran", [[ExecutiveMeddling due to legal reasons]] in real life, was dropped. They later made a RetCon so that they've always been called Matoran.
** The Kahu and Kewa birds were considered non-canonical for some years because of legal issues surrounding their names. They were replaced in-story by Gukko birds who were retconned into their places. Later, they accepted them back into the canon, with the explanation that they're a subspecies within the Gukko. Thus, technically, it still can be said that the Gukko have been there all along.
* This is essentially what a marriage annulment amounts to. In a divorce, a marriage is officially declared to be over; when a marriage is annulled, however, it is considered never to have been a valid marriage in the first place. In times when divorces were significantly harder to get, many people would find a reason for an annulment. The annulment/divorce distinction is a specific manifestation of a greater issue in contract law: some contracts can be declared void, i.e., considered to have never been formed, for reasons such as misrepresentation, one party being a minor who did not get adult consent, among other things, while other contracts are "voidable"—they were valid contracts up to a point where one party's behavior rendered them void.
* Coca-Cola's official history at its website doesn't mention New Coke at all. Nor does its corporate museum.
* Neither Benedict Arnold's name nor face appear on memorials to him at the site of the Battle of Saratoga or on the formal roll of past commandants of West Point at the U.S. Military Academy (only the date, 1780, appears where his name would be), since despite real military accomplishments that twice saved the Continental Army's bacon during the Revolutionary War, he's remembered today primarily for [[TheQuisling selling out to the British]] (and specifically, was going to hand over West Point to the enemy, until UsefulNotes/GeorgeWashington found out about the plot).
* An amendment to the U.S. Constitution can become this in the legal system if and only if another amendment passes that repeals it. So far this has happened with the 18th Amendment (which banned alcohol), which was repealed by the 21st Amendment. Congress has attempted this to the Eleventh Amendment, on the basis of the Fourteenth Amendment (Part V, giving Congress the power to enforce the amendment with appropriate legislation), but the US Supreme Court struck this down in Copyright Law.
* Any part of the Constitution can become this, not just amendments. In fact the whole point of amendments, really, is to have this option to rewrite part of the Constitution if need be. For example, U.S. senators were originally elected by the state legislatures (as specified in Article 1), but that was changed in 1913 to direct popular vote by the 17th Amendment.
* The Articles of Confederation are this to the American government as a whole. Early Americans' fear of centralized government were borne true in the Articles, and the interstate squabbling that entailed caused it to fail. The Constitution replaced it, with a stronger central government.
* This is what the Incognito Mode or Private Browsing mode does to a Web browser's history when activated.
* Dodge ran a series of ads highlighting their history, culminating in a [[https://www.youtube.com/watch?v=Oicu39lda0E 100th anniversary video]] showing the evolution of the brand. It completely skips over the [[TheEighties 1980s]] up til TheNewTens, as for the most part the company sold nothing but [[TheAllegedCar cars built by idiots]], [[PaletteSwap rebadged Mitsubishis or Mercedes]], or just plain [[CantCatchUp outdated vehicles]] following their nigh-bankruptcy during the Oil Crisis, all the way until FIAT bought them in 2010.