->''"... and yet I also become annoyed whenever the great Creator/{{Homer}} nods off."''
-->-- '''Horace''', "Ars Poetica"

Certain facts or events are presented in a series that contradict earlier episodes. May be done [[{{retcon}} intentionally]], or [[NegativeContinuity incidentally]]. Can lead to a ContinuitySnarl or ContinuityDrift.

A common feature of LongRunners. Compare BeyondTheImpossible, which is about characters breaking the story's internal logic by doing what is physically impossible.

!!Example subpages:

* ''SeriesContinuityError/DragonBall''
* SeriesContinuityError/{{Literature}}
* SeriesContinuityError/LiveActionTV
* SeriesContinuityError/WesternAnimation
** ''SeriesContinuityError/AmericanDad''



* One of the Somersby apple cider commercials tells the story of how the music was only listened to until lord Somersby accidentally invented dancing. Then in a later commercial featuring young lord Somersby, we can clearly see some people dancing in the background, even thought it is supposed to canonically take place earlier. Given the nature of these commercials, which run on deliberate AnachronismStew for the sake of RuleOfFunny, it can be justified though.

[[folder:Anime & Manga]]
* ''Manga/{{Bleach}}'' has had a number:
** A particular example is Aizen's claim that Kisuke Urahara [[spoiler:was exiled for creating a ''gigai'' that was untraceable, and destroyed the reiatsu of the shinigami using it, both things that Urahara did]]. In the "Turn Back the Pendulum" chapters, on the other hand, [[spoiler:Urahara's exile is the result of Aizen framing him for turning Hirako and the others into Hollows, something ''Aizen'' did.]] As this comes in the middle of a speech boasting about how evil he is and how he has [[spoiler:fooled and manipulated people for hundreds of years]], there's no reason why he'd be lying, either, although it could be {{handwave}}d as [[spoiler:Urahara's doings]] being the ''official'' reason for his exile, giving Aizen a chance to [[spoiler:not mention his involvement in the matter.]]
* In chapter 48 of ''Manga/ElfenLied'', Nana's sleeve, which was torn off in the previous chapter, reappears.
* ''Manga/FairyTail'':
** The ArtifactOfDoom in the form of an '''eight'''-legged castle in the Nirvana arc of could only be destroyed if the crystals at the root of each of its legs were destroyed simultaneously. The protagonists just barely manage to scrape together enough people with the strength left to fight so that they can post someone at all '''six''' crystals. Lampshaded in the Q&A section by Mirajane, questioning whether it took off the extra legs to move faster.
** At the end Fighting Festival Arc, Fried is seen with short hair after an ImportantHairCut, yet is seen with back to normal at the start of the very next Arc.
* ''Manga/FistOfTheNorthStar'' has quite a number of continuity snarls as the series went on:
** When Kenshiro's adoptive brothers were first introduced, Kenshiro initially mentions that none of them are actually blood-related. Later it turns out that the eldest two, Raoh and Toki, are blood-related after all and we are shown the ruins of their childhood home along with the graves of the birth parents. This can be handwaved by the fact that Kenshiro wasn't exactly sure himself. However, it later turns out that none of them were even born in Japan at all, but that the three of them were refugees from the Land of Shura and that Raoh and Toki's mother is buried in a swamp.
** If the above situation wasn't wasn't confusing enough, along comes the prequel ''Manga/FistOfTheBlueSky'', which shows that the baby Kenshiro was born in Japan, wait no, now it's China.
** A more minor error is Toki being consistently shown with white hair during the Shura arc's flashback sequences, all of which are set when Toki and Raoh were still kids. However, the previous four seasons established and maintained the fact that Toki's natural hair color is brown, and it only became white as a result of being exposed to high levels of radiation as an adult. This one could possibly be handwaved as the work of hair dye, assuming that there Shura had any at the time.
* In ''Manga/{{Freezing}}'', Arnett [=McMillan=] is stated to be Swiss. But in the prologue/spinoff manga Freezing: Zero, she is shown to be American.
* An early ''Anime/FullmetalAlchemist'' episode has Alphonse clearly getting kicked into a pool of water. A much, much later episode has his seal getting wet, and Al not dying from it, as a plot point. It's likely the former scene was TheArtifact from the manga continuity.
** In ''[[Manga/FullmetalAlchemist Brotherhood]]'', the human transmutation circle at the start of the story matches the 2003 anime, which is much more ornate compared to the manga; but when Ed draws another human transmutation circle at the end of ''Brotherhood'', this one matches the manga, not the style created for the animes.
* ''LightNovel/HaiyoreNyarkoSan'' pointed out one from the original light novels in the first TV series. The short has Mahiro and Nyarko doing a FourthWallMailSlot, but the only question they take asks why Mahiro's lunch period was placed after third period in the novels and after fourth period in a magazine-published short; Nyarko responds by angrily tearing up the letter.
* In the second chapter of ''Manga/IceRevolution'', TheRival has clearly seen {{tomboy}} Masaki in her girl's uniform yet in the next chapter she continues to view Masaki as a boy.
* ''Manga/KOn'' has two instances between its first and second seasons:
** In the 7th episode of the second season (the third year for all the girls save Azusa, who is a year younger), Azusa is told of Megumi Sokabe, the former StudentCouncilPresident that by that point graduated, and she doesn't know who she is. However, Megumi appeared as the Student Council President in one scene in the Season 1, episode 11 taking in Ritsu's profuse apologies for missing another deadline. Every member of the band was there, including Azusa. This is due to a {{Retcon}} that changed which year Megumi graduated, as indicated by the color of the ribbon she wears depending on which season you're watching.
** In season 2 episode 13 (15:05), Azusa complains that Yui still hasn't learned to read music, which is consistent with the manga. However, in a scene created for the anime in season 1 episode 10, Yui was reading a score while practicing guitar in the middle of the night.
* In the ''VisualNovel/MajiDeWatashiNiKoiShinasai'' anime, when the villain [[spoiler:Tachibana Takae]] shows up, everyone besides Momo is confused because they don't know who she is. This confusion extends even to Mayuzumi, who [[spoiler:beat Takae prior to the events of the original visual novel to become the youngest member of the "Big Four"]]. As one of the few members of the cast who doesn't blatantly disregard pretty much everyone else, it would be fairly odd for her not to remember her.
* A fairly minor but aggravating one, given how they usually make a pretty decent effort to make sure their TechnoBabble is consistent, is the EMS-10 Zudah's model number from ''Anime/MobileSuitGundamMSIgloo''. The Zudah is a FlawedPrototype frontline combat mobile suit, with the E standing for Experimental, but previous ''Franchise/{{Gundam}}'' series had established that in the Zeon model numbering scheme EMS stood for ''[[ThisIsADrill Excavation]]'' Mobile Suit while prototypes were denoted with the prefix YMS, which doesn't seem to stand for anything (Young Mobile Suit, maybe?) but follows the tradition of the US Air Force using the letter Y to designate experimental aircraft (most notably the experimental flying WaveMotionGun known as the YAL-1).
* Another minor one from ''Franchise/{{Gundam}}'' happened in ''Anime/MobileSuitGundamWingEndlessWaltz''. While the movie {{retcon}}ned the designs of the Gundams, flashbacks to before the beginning of the series showed the Heavyarms and Deathscythe in their final movie forms, even though both machines received a MidSeasonUpgrade (and Deathscythe was explicitly rebuilt from the ground up, and did not have its Active Cloak wings at the time). In addition, Wing Zero's design change removed its [[TransformingMecha Neo-Bird flight mode]]. The 2010 manga ''The Glory of Losers'', a retelling of the series, patches this over by using the ''Endless Waltz'' designs, while ignoring the movie's flashback errors and instead showing redesigned pre-upgrade versions of the suits when appropriate. The manga even restores the TV version of Wing Zero as the original SuperPrototype state of that suit, before later being upgraded to the ''Endless Waltz'' version.
* ''Manga/{{Naruto}}'':
** The most powerful techniques used by an Uchiha depend on the state of their eyes - when Sasuke [[spoiler:was going blind due to over-using his Mangyeko techniques]], those techniques deteriorated and vanished as a result. However, in the end of the series, [[spoiler: [[BigBad Madara]] continues to use these same techniques despite having no eyeballs whatsoever]], frustrating fans who were hoping that this character [[KarmaHoudini would get some comeuppance]].
** On fillers going against canon, episode 481 depicted Neji without his curse mark prior to his father's death. The manga however showed that he received it on Hinata's third birthday. The succeeding episode also has an inconsistency with Sakura. It shows Sakura telling Ino that she likes Sasuke when they're alone in her secret hideout, however the manga and previous episodes showed that they were with other girls on the playground when that happened.
* ''Anime/{{Pokemon}}''
** One of the ''Best Wishes'' episodes has Ash searching for a Thunderstone as part of a contest scavenger hunt. Someone throws one at him, and Ash is desperate to catch it before it hits Pikachu, yelling that he'll evolve if he touches it. However, Pikachu smacked away the stone Ash had in the first season and didn't evolve as a result.
** Another season one episode claimed that Pokémon aren't evil, [[MyMasterRightOrWrong even if they do obey their evil masters]]. Later seasons features many wild Pokemon who just do asshole things because they're jerks, some of them outright evil, like the Togepi in "Where No Togepi Has Gone Before!", a gang of Litwick in ''Best Wishes'', and the recurring Malamar in ''XY''. Then again, this was said by just one (rather naive) Ekans who can't reasonably be an expert on Pokémon morality, so make of it what you will.
** Pokéathlons were not a thing when Ash was in Johto, yet in a Sinnoh episode they suddenly show up and Brock acts like they knew all about them all this time.
** The Beheeyem in a Decolara episode says that "idiots can't be hypnotized" regarding why [[IdiotHero Ash]], Jessie, and James {{No S|ell}}old their hypnotic suggestions. Tell that to Melvin the Stage Magician, a herd of wild Stantler, and [[Anime/PokemonArceusAndTheJewelOfLife Marcus]] in Ash's case, and Ash's own Noctowl ''for all three''! Heck, Leon and his own Beheeyem from ''Best Wishes'' proper could count given that they sent Ash into the same dream state as Iris, Cilan, Pikachu, Meowth, et. al. Ash was effectively a HypnoFool prior to Decolora.[[note]][[SlapYourselfAwake Meowth's Fury Swipes]] were what protected Ash from the Malamar later on; Jessie and James fell prey like everyone else save Meowth, who slapped ''himself'' awake.[[/note]]
** The third episode of the ''XY'' series claims that Meowth can't translate electric shocks between Pikachu and Dedenne; but Meowth had no problem doing so between Pikachu and Zapdos in ''Anime/Pokemon2000''.
** The Japanese ending of the first movie indicates the Team Rocket trio weren't affected by Mewtwo's LaserGuidedAmnesia, due to Mewtwo being unaware they were there, but in ''Mewtwo Returns'' they have no memory of the events and Mewtwo recognizes them.
** Ash being declared to be 10 years old by the narrator at the start of the Best Wishes series is this due to the Movie three short, in both versions, declaring Ash and Pikachu to be celebrating an anniversary of when they first met. Scaled in a year (with some fans arguing if it was the first year or second year due to conflicting sub and dub comments in previous episodes).
* Lampshaded in ''Anime/PrettySammy'' TV Series when Romio appears as the third candidate who was flung into a TrapDoor in the beginning. She then starts a {{Flashback}} to the first episode and afterwards it's pointed out they look ''nothing'' alike.
* Don't try to put ''Anime/RaveMaster'' on a timeline. You just can't. If you ''were'' to try, there'd really only be one little flaw in it -- Haru claiming that he's been fighting to save the world for two years when he's only been the Rave Master for a little over one.
* ''Manga/WanderingSon'':
** In the first volume, its shown that Takatsuki does not know (the then unnamed) Kanako well enough to know of her ditzy qualities. The next volume establishes them as having been friends since kindergarten.
** Mako acts surprised when Nitori tells her she has a part-time job yet earlier Nitori clearly told her, and she even imagined what she'd look as a waiter.
* May or may not be only in the AnimatedAdaptation of ''LightNovel/KyouranKazokuNikki'', but Kyouka complains to Ouka that he never told her about something as amazing as christmas and, more to the point, getting presents. However this comes up after an episode where Ouka and Kyouka were already officially married for one year, which means they somehow skipped another Christmas entirely for this to make sense.

[[folder:Comic Books]]
* Matt Olsen of the ''ComicBook/{{WITCH}}'' comic series is one of the worst examples of this. When he first appears, he's a student with a thing for guitars, has a grandfather who owns a pet store and is utterly shocked when his girlfriend, Will Vandom, reveals her secret identity as a Guardian. However, come the second chapter of the New Power storyline and it's revealed [[spoiler: that he's actually from Kandrakar, knows magic and already KNEW Will and her friends were Guardians.]] And there's been nothing to try to fix the previously established backgrounds.
* In Peter David's ''Before the Fantastic Four: Reed Richards'', the Egyptian Sphinx is briefly possessed and moves around like a living creature. This ignores previous depictions of the Sphinx as the disguised time ship of Kang, who was disguised as Rama-Tut. In an interview, Peter David said he was aware of the previous stories, but chose to focus on his own depiction for the sake of this story.
* ''ComicBook/UltimateFantasticFour''
** The very first story arc established Reed and Sue as 21 years old when they first became superheroes. Later issues would inexplicably claim they were no older than 18 at the present.
** [[spoiler:The Maker[=/=]Reed Richards shows to Falcon how he keeps his intellect always a few steps ahead of The Children by elongating his brain]]. That shouldn't be possible or even necessary. To elaborate: in the first run of the series, Sue ran some tests on Reed and found out that his organism was completely mutated; he became a worm-like being with just a core, no organs other than that. And later, Sue's mother remarked that Reed was getting smarter by the minute due his mutation. So [[spoiler:in the span of a thousand years Reed would be evolving his genius naturally, and there would be no brain for him to elongate]]. Perhaps he still retains at least a physical brain of some sort and [[spoiler: the helmet makes the process of becoming getting smarter more efficient and guided rather than random?]]
* In one issue of ''ComicBook/{{Bone}}'', Rocque Ja cuts off Kingdok's tongue, and it's explicitly stated he can't speak with his tongue missing. Then, in a later issue, Kingdok is able to speak without any explanation given. It's later heavily implied that the Hooded One was giving Kingok the ability to speak without a tongue, as her brief return to death made his speech near incomprehensible.
* In the ''ComicBook/{{Asterix}}'' comics, Obelix's birthday is celebrated in ''Obelix and Co.'', just Obelix's. But in ''Asterix and the Actress'', it is revealed that Asterix and Obelix were born on the same day and they celebrate their birthdays together.
* In ''ComicBook/TheSmurfs'', the story ''The Finance Smurf'' introduces the money system and the Smurfs are revealed as not knowing what money is at all. This contradicts earlier stories, such as ''The Egg and the Smurfs'' where a Smurf makes a wish to become "rich" -- and ends with jewels and money as a result -- and in ''Smurf Stories'' where a Smurf creates a machine that can turn hazelnuts into gold coins and the Smurf tells Papa Smurf he'll use the coins to ''buy'' more hazelnuts.
* ''ComicBook/{{Fables}}''. This is done as a plot point. It used to be 'John of All Fables' but the 'author' made a typo so the universe created the Loveable Rogue Jack of All Fables. Jack meets John later on. Chaos ensues, which it usually does around Jack.
* ''ComicBook/{{Transmetropolitan}}'''s resolution famously revolves around a picture taken by a minor character. Unfortunately, said minor character is given the camera long after the event she is supposed to have taken a picture of.
* In a ''ComicBook/{{Teenage Mutant Ninja Turtles|Mirage}}'' comic -- early in the "City at War" arc -- the Foot Soldiers are shown knowing the location of the Turtles' lair since they had apparently "raided it before". This event happened in the first theatrical movie -- never in the Mirage comics.
* ComicBook/DoctorStrange states near the climax of ''Comicbook/AvengersDisassembled'' that "there is no such thing as chaos magic." The good doctor has ''used'' chaos magic before. Using the terms from the old ''TabletopGame/MarvelSuperHeroes'' RPG, his ArchEnemy has been a chaos magic master for going on forty years now. Kind of impressive for magic which doesn't exist, right?
** Then when ComicBook/ScarletWitch returned to the team during ''Comicbook/UncannyAvengers'', her abilities ''were explicitly described as "Chaos Magic" once again''.
* In an issue of ''ComicBook/AlphaFlight'', speedster Northstar is suffering from a disease since Pestilence, that storyarc's bad guy, kissed him. Problem is, said kiss won't happen until the following issue. (Northstar's illness was originally intended to be AIDS, because, you know all gays have AIDS, and you can get it from a kiss on the forehead).
* ''Franchise/SpiderMan'': Peter Parker's middle name has been repeatedly stated as "Benjamin," after his uncle. However, one comic short story co-written by Creator/StanLee himself has Mary Jane call him "Peter Q. Parker." Peter was also Peter ''Palmer'' in at least one early comic.
* Creator/StanLee wasn't good at remembering names. In some early issues of ''ComicBook/IncredibleHulk'' that he wrote, the protagonist Bruce Banner was suddenly called [[http://goodcomics.comicbookresources.com/2005/11/03/comic-book-urban-legends-revealed-23/ "Bob Banner"]]. Lee [[HandWave handwaved]] the error by revealing that his full name is Robert Bruce Banner.
* ''[[ComicBook/XForce Uncanny X-Force]]'' is running right into this.
** The opening page describes Psylocke at age 16, living alone, broke, modeling and nearly going insane when her powers activate. Problem is, Betsy comes from a privileged upbringing, she was an adult charter pilot when her powers began to develop, she wasn't traumatized by them, and oh yeah, ''she wasn't Asian''.
** Later in the issue, ComicBook/{{Storm}} asks Psylocke if she thinks Bishop is capable of killing a little girl. ''Literally the last time the X-Men saw him'', Bishop had murdered a team of Sentinel pilots, thrown the Sentinels at a group of mutant students, and put a bullet in Professor Xavier's head, all to [[MoralEventHorizon murder an infant girl]]. And when that didn't work he seeded the planet with nuclear weapons that are ''still'' set to cause an apocalypse in about fifty years' time. [[SubvertedTrope However]], Psylocke reminds her immediately that he tried to do it before.
* ''Franchise/XMen'' and ''ComicBook/{{Excalibur}}'' claim Mojo and Rachel Summers are unique beings in the multiverse with no alternate counterparts, though there are stories with alternate versions of Mojo and Rachel Summers.
* ''ComicBook/{{Wolverine}}'': The Sabretooth that died in ''Wolverine #55'' was a clone, and the real Sabretooth was in hiding. So what was the deal with ''Wolverine Goes to Hell'', where Wolverine beheads Sabretooth's soul and leaves it unable to return to the living?
** Clones of Sabretooth tend to have their HealingFactor go haywire, hence Mr Sinister not cloning Sabretooth along with the rest of the Marauders. Romulus creates several clones of Sabretooth without mentioning this cloning problem, and we don't know how long they can stay alive.
* In issue #2 of ''ComicBook/PocketGod'', the pygmies bury Klik when they think he's permanently dead; marking his burial site with a gravestone. However, in issue 14, everyone but [[TheSmartGuy Klik]] is perplexed when they come across some graves; not knowing about burials because they are [[ResurrectiveImmortality immortal]] and never had to bury one of their own.
* The ''ComicBook/{{Marvel 1602}}'' "Fantastick Four" sequel miniseries has Shakespeare get inspired by a lady when she yells "And damned be he who first cries 'hold, enow!'", causing him to start looking for a pen, and culminating in her forming a relationship with Shakespeare and writing his plays for him. All well and good as history goes in these comics, given that in the continuity in question continental North America is overrun by dinosaurs, but it does have one minor problem. The line in question had already been written into ''Macbeth'' in-universe. In fact, it was one of the first lines spoken in the series.
* Marvel's ''Legion of Monsters'' vol. 2 by Dennis Hopeless and Juan Doe completely depends on continuity errors for its story to work:
** The plot hinges on the fact that ComicBook/{{Morbius}} was supposedly never bitten before; [[spoiler:being bitten by a monster in Monster Metropolis started the spread of the virus that lay dormant in his blood]]. But he ''was'' in fact bitten before, by the vampire Hannibal King, no less.
** In the flashbacks that take place in 1973 Morbius is shown surprised by the existence of pacifist vampires, but by that time he didn't even believe vampires or the supernatural existed at all, thinking they were fictional. The same goes for Dracula, who the flashbacks show he met.
** The 1973 flashbacks make it seem Morbius had been a vampire for several years by that point and had been trying to cure himself for a long time, even though he was only introduced a year and a half before (in October 1971). The only way this can be explained is if Morbius became a vampire somewhere in the '60s, but this only further enhances the problem (see the ''Legion of Monsters'' entry on the ComicBookTime page for more explanation on this).
** Morbius is wrongfully described as "an MD with expertise in supernatural medicine". In a 1986 comic--which takes place later in the continuity--he explicitly says the supernatural remains ''outside'' his area of expertise.
* Comics written by Creator/BrianMichaelBendis tend to suffer from this, especially when they're referencing a different comic book. Even when the story being referencing was written ''by Bendis himself''.
* ''ComicBook/{{Convergence}}'': There are a number of these scattered throughout the tie-in issues, mostly fairly minor, but they do stand out to those familiar with the time period in question.
*** Captain Marvel is referred to as "Shazam" several times, despite the fact that his name was not changed to Shazam until the ComicBook/{{New 52}}.
*** Both pre-Crisis [[Franchise/TheFlash Barry Allen and Jay Garrick]] refer to the Speed Force, something neither of them should have any knowledge of since the concept wasn't created until the post-Crisis Wally West Flash series. Barry's opponent, Tangent Comics Superman, mentions this.
*** 90s hook-handed Aquaman is pining for Mera, but the two of them were separated and not on good terms at all during that time period.
*** Kyle Rayner's ring talks to him and welcomes him back to the Franchise/GreenLantern Corps, but the Corps did not exist when he first became a GL, and it rarely spoke to him, if ever. He shouldn't know anything about Qward either, having not encountered the Weaponers that early in his career.
*** Kyle views Hal and Parallax as two separate entities. This is consistent with the Creator/GeoffJohns retcon that made Parallax a fear entity that possessed Hal, but before the retcon, Hal was Parallax. Note that the fear entity never appears or is referenced, and Hal's sanity while depowered is consistent with the post-Zero Hour zero issue of Green Lantern, so this may not be a continuity error so much as an attempt to remain mostly consistent with the past while keeping the retcon in mind.
*** The summary of the events of Emerald Twilight is wrong. Hal didn't kill all the other Green Lanterns. He defeated them and took their rings, but he left them enough power to survive. And indeed, most of them turn up later on during Geoff John's run and are collectively known as the Lost Lanterns. Similarly, Hal didn't kill the Guardians either. They pooled their power and put everything they had into Ganthet, who created a ring for Kyle. Hal absorbed all the power of the central power battery into himself.
*** In "Batman and the Outsiders", Commissioner Gordon has red hair. He should have white hair and a white moustache in any pre-ComicBook/{{Flashpoint}} appearance, with the exception of stories like [[ComicBook/BatmanYearOne Year One]] that are set in the past.
*** Comicbook/{{Supergirl}} is wearing the wrong costume for her death scenes from ComicBook/CrisisOnInfiniteEarths. Also, her father Zor-El didn't work on the Phantom Zone projector.
*** [[http://comicboxcommentary.blogspot.com/2015/04/matrix-called-kara.html Matrix is called Kara by Lex]].
*** Superwoman of Earth-3 is referred to as ComicBook/LoisLane by several of her fellow Crime Syndicate members. Pre-Crisis Earth-3 ComicBook/LoisLane was a separate character from Superwoman.
*** Pre-Crisis Captain Atom is referred to as Nathaniel Adam -- the name of the Post Crisis Captain Atom -- rather than Allen Adam.
*** Parallax focuses his power through a ring when he kills Deimos. Parallax has internalized the power of the Main Power Battery and doesn't use a ring. The tie-in issues depict this correctly, it's just the main series that gets it wrong.
*** The ''Comicbook/LegionOfSuperheroes'' that battles Earth-4's Charlton heroes seems to be some weird mix of the post-Zero Hour Legion and the pre-Zero Hour temporal duplicates of the original Legion that wore very similar costumes (Batch [=SW6=], who starred in ''Legionnaires''). It includes the characters from ''Legionnaires'' who weren't duplicates of existing characters like Computo and Catspaw, neither of whom appeared in the reboot, but it also includes Timber Wolf and Princess Projectra, neither of whom were in ''Legionnaires'' (their [=SW6=] selves were killed during the Dominator war) and both of whom look like their reboot selves (particularly obvious in Jeckie's case, since it means she's a giant snake). Characters who were dead/radically altered by the end of the reboot aren't, and everyone with different costumes in the two versions is wearing the [=SW6=] version. Except Element Lad, who's wearing his pre-Zero Hour ''adult'' self's costume.
*** The status quo of the West family is that of the final issues of Wally's own series. This changed dramatically in ''Flash: Rebirth''. The idea that pre-''Flashpoint'' Gotham was taken before Barry's return (i.e. three years before ''Flashpoint'') doesn't jibe with any of the other stories.
** The beginning of Issue 6 is baffling when it comes to the continuity of the main DCU. You have the Justice League talking to the Justice League United (which formed after ''ComicBook/ForeverEvil''). Okay. Telos, the planet, is being transported into the universe, which has drawn attention of several parties. You have the Oracle being from the Franchise/{{Superman}} books, Nix Uaotan from ComicBook/TheMultiversity, and Darkseid taking notice. That's all fine. But you have Jediah Caul and K'rot from the short-lived ''Threshold'' book[[note]]which means this takes place before the finale of said book since Caul ''died'' at the end[[/note]], the Red Lanterns[[note]]which is impossible, since the Corps was slaughtered/depowered shortly after Kara left their ranks; with little time for her to join the JLU '''and''' happen before Atrocities and ''Godhead''[[/note]], and the ''freaking'' Guardians of the Universe[[note]]who are way beyond dead at this point, unless the Templar Guardians decided to take up their robes at this point... whenever this happens[[/note]]. [[MyFriendsAndZoidberg And Blue Beetle is there too, still stuck in space apparently.]] It also might have a continuity hiccup with itself, as the Barry Allen that ComicBook/{{Earth 2}} Jay Garrick meets implies he was grabbed after meeting Psycho-Pirate from ''Crisis On Infinite Earths'', which flies in the face of the Barry Allen from his own tie-in, who was taken when he first left the future to say hi to his friends, before he was set on his death course, and was stuck under a dome for a year.
* ''ComicBook/SerenityLeavesOnTheWind'': One scene has a [[LaResistance New Resistance]] member suggesting Malcolm Reynolds is hiding out on his homeworld, Shadow, with Bea retorting that Mal is too smart to hide at his house. Other material, including the RPG, stated that Shadow was [[OrbitalBombardment glassed]] by the Alliance during the [[GreatOffscreenWar Unification War]].
* The entire existence of ComicBook/WonderGirl resulted from such an error. ''Comicbook/TeenTitans'' originated as a team-up of [[KidSidekick the major DC heroes' sidekicks]]. But it was completely forgotten by the writers that Wonder Girl ''wasn't'' WonderWoman's sidekick, she was Wonder Woman herself as a teenager. When somebody remembered this fact, the {{retcon}} to explain it gave the Titans' version of Wonder Girl her own identity as Donna Troy and [[ContinuitySnarl possibly the most convoluted history of any fictional character, ever]].
* Ed Brubaker's run on ''Series/{{Catwoman}}'' reintroduced Holly Robinson, Selina's room-mate and sex-work protegee from ''Batman: Year One'' and ''Her Sister's Keeper'', as her new sidekick. Unfortunately, Holly had previously been killed off, after being given completely different CharacterDevelopment as a mob wife, in a story from the ''Action Comics Weekly'' anthology series. Rather than make any attempt at {{Retcon}}, Brubaker simply acknowledged the error in a short LeaningOnTheFourthWall comedy piece included in the ''Catwoman: Secret Files and Origins'' one-shot. He admitted both in the piece and in interviews that he simply hadn't known about Holly's death, given the relative obscurity of the comic where it happened. The intervening ''ComicBook/ZeroHour'' CosmicRetcon provides an easy in-universe explanation for fans who really want one.
* When the heroes who were presumed killed by ComicBook/{{Onslaught}} returned at the end of ''ComicBook/HeroesReborn'', ComicBook/SheHulk and ComicBook/TheInhumans were among those who made the jump back to the normal Marvel Universe--despite She-Hulk not fighting Onslaught and Crystal being the only one of the Inhumans who did.
* The original ''ComicBook/ContestOfChampions'' had its plot resolved by the writer ''forgetting what hero was on what team''! The event had 12 heroes seeking four pieces of an item and the team with the most won. It was down to The Grandmaster's team of [[ComicBook/AlphaFlight Sasquatch]], ComicBook/CaptainAmerica and [[OriginalCharacter Blitzkrieg]] and The Unknown[[spoiler:/Death]]'s team of [[Franchise/XMen Storm]], [[OriginalCharacter Shamrock and Collective Man]]. It's down to Captain America and Shamrock as they find the piece needed. Cap makes the lunge, but Shamrock's luck powers allow her to snatch it for the win for the Grandmaster... but, wasn't it said that Shamrock was part of ''The Unknown''[='s=] team? Yes, the writer ''and'' editorial didn't spot this gaff and allowed it to be completed as is. If not, it would have been a tie.
* ''ComicBook/XMen''
** In ''X-Men'' #21, Kwannon, or Revanche, returns in Psylocke's original body, claiming to be the true Elizabeth Braddock, however, Beast and Psylocke refer to her as Revanche before she's introduced herself. Could be handwaved as psychic prescience, but there's no explanation presented in the story.
** In ''Uncanny X-Men'' #178, ''X-Men'' #93, and ''Rogue'' vol 3, flashbacks show Rogue leaving her family and living with Mystique. While living together, Rogue and Mystique make physical contact, implying her powers had not yet manifested. ''X-Men Unlimited'' #4 shows Rogue leaving her family because of her powers activating, sending a boy into a coma, which doesn't explain why she can physically contact Mystique later. In addition, this issue shows the Mississippi River having waterfalls, which are not shown to exist in any other story.
** ''ComicBook/{{Onslaught}}'' reveals the X-traitor message that motivated Bishop to travel to the past was created from Professor Xavier becoming Onslaught, however, the wording of the message is different from the original story in order to make the reveal more plausible.
** ''The Twelve'' revisits the The Twelve storyline introduced in ''ComicBook/XFactor'', but the list of twelve mutants differs from the original story. Possibly handwaved as the Master Mold malfunctioning.

[[folder:Comic Strips]]
* ''ComicStrip/{{Peanuts}}''
** A [[http://www.gocomics.com/peanuts/1959/06/06 comic strip from 1959]] has Snoopy say that he doesn't have any siblings, yet they appear later in the strip's run (and were mentioned in [[http://www.gocomics.com/peanuts/1970/03/18 this 1970 strip]]). To make matters worse, when he does first meet his siblings in the strip he claims they all speak different languages, which is also later shown to be false. He also started calling Charlie Brown the "round-headed kid" around the late 1960's, even though he called him by his name earlier, although that could be more of CharacterizationMarchesOn.
** Even stranger, the December 5, 1960 comic has Snoopy denying being a beagle.
** Even though Violet's birthday is apparently June 17th, according to [[http://www.gocomics.com/peanuts/1962/06/17 the June 17, 1962 strip]], a couple of the 1950's strips hinted her birthday is January 28th: In [[http://www.gocomics.com/peanuts/1951/02/22 the February 22, 1951 strip]], she said her birthday was last month, and in [[http://www.gocomics.com/peanuts/1955/01/29 the January 29, 1955 strip]], Charlie Brown said her birthday was yesterday.

[[folder:Fan Works]]
* Calvin's phone number in ''Fanfic/CalvinAndHobbesTheSeries'' is [[Recap/CalvinAndHobbesTheSeriesS1E1BirthOfAFriendship first]] shown to be [[FiveFiveFive 555]]-7186. [[Recap/CalvinAndHobbesTheSeriesS1E6HelpWanted Five episodes later]], it's 555-6846.
* The author's notes in FanFic/SpiritOfRedemption reveal several {{Retcon}}s made to previous chapters, usually in regard to character's ages.

[[folder:Films -- Animation]]
* At the end of the first ''Disney/{{Aladdin}}'' film, [[Creator/RobinWilliams the Genie]] loses his cuffs as a result of him being freed by the title character using his third wish. However, in the sequel, he for some reason started to wear cuffs again. The TV series finally {{Lampshaded}} this in one episode by having Genie say, "The only thing I'm a slave to is to fashion!", implying that he wears his cuffs because they look good on him.
* The Disney DirectToVideo film ''Disney/TheLionKingOneAndAHalf'' (which is essentially a recap of the first film's events, but from Timon and Pumbaa's point of view) actually contradicts the events of the first ''Lion King'' film on many levels. Though, given whose [[UnreliableNarrator points of view]] it's told from...Then again, some people have interpreted it as a parody because of how many events it contradicts.
* At the end of Disney's ''Disney/AtlantisTheLostEmpire'', [[TheHighQueen Kida]] actually gains more tattoos on her face, but in the sequel, all of her tattoos save her first one are inexplicably gone!
* ''Disney/TheHunchbackOfNotreDame''
** Esmeralda mysteriously started to wear her Gypsy outfit again (although with a pair of shoes, she was barefoot in the first film) in ''The Hunchback of Notre Dame II'', even though said outfit as well as all but one of her other dresses (including the one she poledanced in at the Feast of Fools) were implied to have been destroyed by Frollo at the end of the film so he can have her executed properly, which leaves her with a white dress in which Esmeralda would have been burned alive in.
** Also in the same film, her new husband Phoebus mysteriously gains his armor back despite losing it near the end of the first film, much like his wife Esmeralda ending up wearing the white dress.
** Even more jarring, the little girl who hugged Quasimodo at the end of the first movie is present at the start of the second movie, unaged at all even though enough time has passed for Esmerelda and Phoebus to have a young son.
* ''Franchise/WinnieThePooh: Piglet's Big Movie'' recounts how Kanga and Roo first came to the 100 Acre Woods. Tigger takes part in the event, even though Pooh and the others first met Tigger in ''Winnie the Pooh & the Blustery Day'', in which they already know Kanga and Roo.
* In Disney's ''Disney/{{Bambi}}'', Bambi's mother says not one deer has lived half so long as The Great Prince, but in ''Bambi II'', when Bambi is still a fawn, The Great Prince says he was Bambi's age when he met Bambi's mother. However, it has been said that Bambi's mother might have just been exaggerating about The Great Prince's age.

[[folder:Films -- Live-Action]]
* The third film in ''Film/TheOmen'' series, ''Film/OmenIIITheFinalConflict'', ends with [[spoiler:the second coming of a fully-empowered Jesus Christ on Earth]], a seemingly important event which is naturally not mentioned once in ''Film/OmenIVTheAwakening''.
* In ''Film/ThePrincessDiaries'', Mia's birthday is stated to be after Genovian Independence Day. In the sequel, her birthday is ''before'' Genovian Independence Day.
* Three big examples from the ''Franchise/StarWars'' films:
** First is the conflicting ages of the Republic given by Obi-Wan and Palpatine. In ''Film/ANewHope'', Obi-Wan establishes that the Jedi have been protecting the Republic for "a thousand generations" (anywhere from 15,000 to 30,000 years depending on how you count a "generation"). In ''Film/AttackOfTheClones'', Palpatine says that he will not let "this Republic which has stood for a thousand years" fall. Even factoring in that Obi-Wan may have been exaggerating (which, according to the ExpandedUniverse, he wasn't) that's a pretty big difference in ages. It's been Handwaved since that there was a major reformation and restructuring of the government a thousand years prior which Palpatine is referring to, hence the reference to "this Republic" rather than "the Republic".
*** Considering that Palpatine schemed all along the prelogy, it is possible he got sometimes in the muddle between his deliberate lies and genuine mistakes. Anyway, the character is so dubious that none of his statements should be deemed reliable, when contradicting another source of the canon.
** Another example is Leia remembering her mother as established in ''Film/ReturnOfTheJedi'', only for Padme to die within minutes of Luke and Leia's birth in ''Film/RevengeOfTheSith''. There ''have'' been attempts to explain this, such as the novelization implying Leia was "trying to take in every detail" or some fans' speculating Leia was referring to her foster mother but even Leland Chee, the man responsible for sorting the massive convoluted ''Star Wars'' continuity, says that he's stumped.
** A third is the perception of Jedi between the first and the two trilogies. In the original (Eps. 4-6), Jedi were considered the stuff of myth and legend and The Force "an ancient religion." The prequel trilogy (1-3) showed the Jedi as hundreds strong, with hundreds, if not thousands more in training. They were front and center in the Clone Wars (which the people of the original do remember clearly). They were involved in Republic politics. People knew of them. One of Palpatine's first acts as Emperor was a speech denouncing the Jedi as traitors and usurpers who had to be put down. Somehow, in the two decades plus between the two trilogies, Jedi have gone from "the Texas Rangers" to "The Knights of the Round Table". Thirty years later, it is apparently as old as Ancient Egyptians or, say, Neanderthals, because old Han Solo heavily insists that it is entirely true, the Jedi and the Force, so it is supposed young characters Rey and Finn only heard of it as fairy tales. For a futuristic universe where average lifespan of a human is more around 100 years, you could say Star Wars people have goldfish memory. It would be as if people in RealLife today didn't believe TheVietnamWar actually happened. It makes even less sense when you factor in that the (now non-canon) Extended Universe made Han Solo old enough to likely remember the Jedi as an active force and ''Revenge Of The Sith'' had Chewbacca ''fighting side by side with Yoda.''
*** The only plausible in-universe explanation would be that revengeful Palpatine actively destroyed any vestige of the Jedi Order. Like, with big artillery. It means all the holocrons and any document dedicated to Jedi in the whole galaxy were burnt, every talk about Jedi was forbidden on penalty of death, probably some scholar people who knew too much were killed or had the relevant memories erased, and a heavy imperial propaganda pretended that Force use was just a magic/technological trick. In this case, and if Palpatine could really control all the information of the Galaxy, the Jedi may have become, within a generation, a vague memory of a far past, and within two, a pure legend. The only ones left alive went into hiding, to protect themselves and the children: far better to be forgotten as members of a mythical order, than remembered as the members of a recent group the totalitarian government is actively hunting. By the time the original trilogy is done, only one Force user remains [[spoiler: and we know (as of Force Awakens) that they did indeed attempt to revive the Jedi order]].
* The Franchise/StarWarsLegends:
** ''Film/RevengeOfTheSith'' is supposed to be preceded by ''WesternAnimation/StarWarsCloneWars'' and ''Literature/LabyrinthOfEvil''. Both are supposed to take place simultaneously in some coherent order, yet both contain scenes mutually exclusive to each other, necessitating MergingTheBranches for both stories to work. Both works were then [[ContinuityReboot relegated to the Legends continuity]] and replaced with ''WesternAnimation/StarWarsTheCloneWars''.
** ''Literature/LabyrinthOfEvil'' itself claims that before discovering an image of Darth Sidious within Nute Gunray's mechno-chair, the Jedi believed he was a lie, invented by Dooku to lead Obi-Wan astray on Geonosis in ''Film/AttackOfTheClones'', and not mentioned since. But in ''Yoda: Literature/DarkRendezvous'', Dooku names Sidious as his master openly to Yoda. {{Continuity Nod}}s to ''Dark Rendezvous'' appear elsewhere in ''Labyrinth of Evil'', yet this discrepancy is not explained.
** Dac or Mon Calamari? {{Retcon}}ned as Dac being the indigenous name for the planet.
** The ''ComicBook/MarvelStarWars'' comics introduce us to "your father, Darth Vader, and Obi-Wan Kenobi." Also, Obi-Wan has black hair. The actual phrasing was "Obi-Wan, Darth Vader, and the man who carried Anakin Skywalker's lightsaber," certainly implying Anakin and Vader are two different people. In one of the deftest {{RetCon}}s in the Expanded Universe, an author was able to use a ''pre-existing'' [[http://starwars.wikia.com/wiki/Concordance_of_fealty Jedi ritual]] to justify the man carrying the saber as a third, distinct Jedi who had swapped sabers with Anakin at the time.
** Chewie only having one son when WordOfGod says Wookiees have multiple births. And six breasts. Considering [[DeathWorld Kashyyyk]], it might just be infant mortality.
* The ''Franchise/{{Halloween}}'' films:
** At the end of [[{{Film/Halloween1978}} the first movie]], Michael is shot by Loomis six times, then falls off a covered balcony at the back of the house; this scene is shown again at the start of [[Film/HalloweenII1981 the sequel]] -- and Loomis shoots Michael ''seven'' times (despite only having a six-chamber revolver), sending him flying off an ''uncovered'' balcony at the ''front'' of the house. Made all the worse when Loomis goes around shouting "I shot him six times!" in the first few minutes of the film.
** In the original ''Halloween'', the Myers house is a modest two-story home. By the time we get to ''Film/Halloween5TheRevengeOfMichaelMyers'', it's a huge, Gothic-style mansion, and by the time we get to the sixth film, it's back to being a two-story family home that's still completely different from what we've seen in the first two films. At the time these films were made, they were on the same continuity as the first two, so there's no excuse for the discrepancy.
* In ''Film/StarTrekIITheWrathOfKhan'', Khan recognizes Chekov despite the latter being introduced in the second season of ''Series/StarTrekTheOriginalSeries''. "[[Recap/StarTrekS1E22SpaceSeed Space Seed]]", the episode with Khan, was part of the first season. One theory is that, since Chekov never got a formal introduction episode, he could've been in the lower decks since Day One and been promoted to bridge officer after Khan's banishment. It wouldn't even be the first time someone's shown up on screen out of nowhere [[RememberTheNewGuy and been treated like they were on the show the whole time.]] Walter Koenig likes to joke that offscreen they met when Chekov kept Khan waiting at a restroom, then left him with no toilet paper, hence Khan remembering him.
** This can be made made more plausible if one opts to [[OutOfOrder sort the viewing order]] of the show by the [[AlternativeCalendar stardates]], allowing two second-season episodes featuring Chekov, "[[Recap/StarTrekS2E7Catspaw Catspaw]]" and "[[Recap/StarTrekS2E21PatternsOfForce Patterns of Force]]", to be set ''before'' the episode with Khan. That way, clearly Chekov was part of the crew when Khan and his henchmen tried to take over the ship; his fight against them was just [[HeroOfAnotherStory not shown]].
* Smaug is quite clearly a quadruped in ''Film/TheHobbitAnUnexpectedJourney'', and then transforms into a wyvern in ''Film/TheHobbitTheDesolationOfSmaug''. The Extended Editions of the films replace the original Smaug in ''An Unexpected Journey'' with the new one to correct this.
* ''Film/XMenApocalypse'': When Raven reminiscences about the original team from ''Film/XMenFirstClass'', she talks about how they were called the "X-Men." However, going by the events of that film, Moira only coined the term "X-Men" ''after'' the Cuban Missile Crisis, by which point the team had already broken up and Raven herself had left.

[[folder:Myths & Legends]]
* See the origins of gods in Myth/GreekMythology.
** Aphrodite both rose from foam created by Uranus' severed testicles and was born to a mistress of Zeus.
** Dionysus is both the son of Zeus, and the son of Persephone and Hades.
** After swallowing the pregnant Metis, Zeus gets an agonizing headache. When Hephaestus split his head open to relieve the pain, Athena sprang forth. She went on to become the most important goddess of her generation, and Zeus took great pride in the fact that he'd "fathered" her all by himself. Hera became jealous and gave birth to a child all by herself, to prove Zeus wasn't the only one who could do it. That child? Hephaestus. Some authors solved this one by having somebody else, like Prometheus or Hermes, split Zeus's head instead, or denied that version of Hephaestus's birth.
** Honestly, Greek mythology could have a page to itself, due to its numerous continuity errors and [[ContinuitySnarl snarls]].
* The {{Canon}} of Myth/NorseMythology consists of numerous sources which contradict each other on many points. In particular, the important story of Balder's death exists in two very different versions.

[[folder:Pro Wrestling]]
* Wrestling/{{TNA}} gives the name of Dixe Carter's father as Bob (his real name) yet also implies that it is Ethan, as hes the grandfather of Wrestling/EthanCarterIII.

[[folder:Tabletop Games]]
* ''TabletopGame/DungeonsAndDragons'' gods:
** The Demon Queen of Spiders, goddess of the drow, is called Lolth. R.A. Salvatore accidentally spelled her name Lloth when she became a ''TabletopGame/ForgottenRealms'' character, and the error proliferated to the extent that a rationalization was needed.
** Juiblex had similar problems, being often misspelled as Ju'''bi'''lex. Since both are Demon Lords it is quite easy to invoke IHaveManyNames to justify the differences.
* In the ''Tabletopgame/MagicTheGathering'' novel ''Literature/RathAndStorm'', it's briefly mentioned that Hanna's mother Rayne is dead. However, we later find out in ''[[Literature/MasqueradeCycle Prophecy]]'' that she's quite alive. [[spoiler: And then she dies in ''that'' book.]]

* ''Toys/{{Bionicle}}''
** The original intro of the story involves Takua summoning the Toa in their canisters to the island. He got blasted into the sky to witness six metal capsules descending form the "heavens" and landing in the sea, then drifting to the island shores. Later material explained that these canisters had been floating in the ocean for a thousand years before Takua attempted to do this.
** Another example is what the Order of Mata Nui reported about Karzahni. In their book, they write about how he is amassing an army in his own realm to lead them into battle. When Karzahni reappears in the story, he reveals he's been following the Matoran who later became the Toa Inika ever since they had gotten away from him, so he would've had no time to train any army.
** When the Rahkshi attack Ta-Koro in the movie ''Mask of Light'', Tahu, the village's protector, boldly shouts "None have breached Ta-Koro's gates before! And none shall this day!" Except that the previous set of baddies, the Bohrok-Kal ''have'' broken into the village and defeated Tahu himself, ''right'' before the movie's story.
** Some scenes of the second movie, ''Legends of Metru Nui'', are at odds with the novels' and comics' stories. One of the more notable issues is Matau learning that his blades double as wings. In the movie, everyone is surprised when they activate and save him from plunging to his death, but according to the comics, he has already used them for flight earlier.
** The comics leading up to the third movie, ''Web of Shadows'', didn't want to spoil Vakama's betrayal, and so showed him leading his team into the Coliseum to clash with the villains. Yet in the movie, we learn that Vakama, having become evil due to the villains' influence, was in the Coliseum the whole time, waiting for his former comrades to try and take him back.
** The book ''Tale of the Toa'' was written without the ''Mata Nui Online Game'' in mind (which at the time had been considered non-canonical), but it had some issues of its own. In the comics, the fact that the Rahi beasts have to be defeated by taking off their infected masks is common knowledge from the get-go, but in the book, which was written in accordance with the comics, this is only discovered halfway through. Other parts of the book were later also {{Retcon}}ned to better fit in with the timeline and accommodate the events of the ''Online Game''.
** The online animations and the book ''Makuta's Revenge'' offer differing accounts on which Bohrok-Kal stole which Toa Nuva symbol. Usually the former is seen as more canonical. The mini-comic in the toys' instruction manuals contradict both, making it an example of AdvertisingOnlyContinuity.
** Makuta's narration in one of the 2003 comics claims he's been hiding for years after his 2001 defeat. Later on, the writer established that the entirety of the 2001-2008 storyline (barring the 2004-2005 flashbacks) took place within the span of a single year. Of course, Makuta might just be BreakingTheFourthWall here and meant "years" in real-life terms.

[[folder:Video Games]]
* ''Franchise/RatchetAndClank [[VideoGame/RatchetAndClankFutureToolsOfDestruction Future: Tools of Destruction]]'' reveals Ratchet to be [[spoiler:the last of the Lombaxes]]... but in ''[[VideoGame/RatchetAndClankGoingCommando Going Commando]]'', [[spoiler:Angela Cross is one too]]. Whoops. Apparently, WordOfGod has said [[spoiler:she's a separate but similar species]]. Regardless, in the prison in ''Tools of Destruction'', they mention [[spoiler:"prisoner's of Lombax descent", so Angela could also be half-Lombax.]] [[spoiler:FlipFlopOfGod. As of ''[[VideoGame/RatchetAndClankFutureACrackInTime A Crack in Time]]'' Angela has been confirmed as a Lombax (apparently females don't have tails).]]
* In ''VideoGame/StreetFighterII'', Guile wants revenge on M. Bison for killing his friend Charlie. In ''VideoGame/StreetFighterIV'', he's insistent that Charlie is still alive because (as established in the ''VideoGame/StreetFighterAlpha'' prequel series) they NeverFoundTheBody.
* ''VideoGame/{{Ultima}}'' has a considerable number.
** The entire game of ''VideoGame/UltimaUnderworld'', which takes place in a dungeon that had been destroyed several games previously.
** In ''VideoGame/UltimaIX'', the Tapestry of Ages is supposed to depict the previous ''VideoGame/{{Ultima}}'' games. It is said to have magically painted itself throughout history as the events unfolded, yet no such tapestry can be found in earlier games. The visual depictions are not accurate to the details of each story. The tapestry is meant as a reminder that the Avatar visited Britannia on eight occasions, once for each main entry in the series, ignoring how the Avatar was not on Britannia in ''VideoGame/UltimaII'' and ''VideoGame/UltimaVIII'', and remained on Britannia in other games.
* ''VideoGame/FinalFantasyXIII'', ''[[VideoGame/FinalFantasyXIII2 XIII-2]]'', and ''VideoGame/{{Lightning Returns|FinalFantasyXIII}}'' have terrible in-game continuity, and cross game (they are a successive series of events) continuity, to the point the final game in the trilogy that built off of everything the prior two had happen, has completely different reasons/motivations/developments/explanations/etcetera for events when reflected upon by the characters and the lore of the games themselves. But they still apparently happened the exact same way.
** Etro is stated to be the goddess of time in ''XIII-2'', but in ''Lightning Returns'' and the expanded universe material, her dominion is over the cycle of death, meaning time travel and visions of the future/alternate timelines she made possible in the second game could not have been done by her, and the rest of the series' god entities were either sleeping or dead.
* On the way to the TrueEnding of ''VideoGame/HyperdimensionNeptuniaMk2'', the CPU Candidates are promoted to full [=CPUs=]. Yet at the beginning of ''VideoGame/HyperdimensionNeptuniaVictory'', the direct sequel, Nepgear introduces herself, Uni, Rom and Ram as CPU Candidates. While there are a few ways to reconcile this (mk2's Good Ending is the canon one, or the immortal goddess [=CPUs=] being reinstated after the events of the game), the game doesn't explain it.
* ''VideoGame/SpaceQuest'': The [=WD40=] terminoid in ''SpaceQuestVTheNextMutation'' is sent to collect on the payment Roger Wilco didn't make for the Gippazoid Novelty Company's Labion Terror Beast Mating Whistle after defeating the Arnoid sent to collect payment in ''VideoGame/SpaceQuestIIIThePiratesOfPestulon''. In that game, Roger defeated the Arnoid, who demanded payment for the whistle from ''SpaceQuestIIVohaulsRevenge''. And in that game, examining the order form shows the whistle is for free, which in later games is never brought up again in-story. The developers admitted it was an oversight, and the Space Quest [[http://spacequest.wikia.com/wiki/Gippazoid_Novelty_Company wiki]] runs with the idea it's the company's fault for charging for an allegedly free item.
* ''VideoGame/SpyroYearOfTheDragon'' clearly states dragon eggs only occur once every twelve years. In ''VideoGame/SpyroAHerosTail'' you must rescue different dragon ages despite the fact no one seems to have aged much since the third game, and certainly not twelve years. However, ''Year Of The Dragon'' also flies contrary to ''VideoGame/SpyroTheDragon'', where one had to chase thieves with dragon eggs, and while time obviously passed between the games, twelve years seems unlikely.
* ''VideoGame/ResidentEvil3Nemesis'' states that Raccoon City was completely blocked off from the outside by the military in order to contain the viral outbreak and supposedly taking place before and after the events of ''VideoGame/ResidentEvil2'' (apparently the entire second game took place while Jill was unconscious from the T-Virus infection). In the game, you can see most of the city is a burning wreck and the entranceway for the RPD is littered with construction equipment while also having two of the main doors inside being barricaded. However, ''Resident Evil 2'' shows the front entrance of the RPD being rather clean as if nothing happened on the property. Not only that, but the opening cut scene shows Leon and Claire entering Raccoon City without any blockades barring their way and most of the city looks abandoned rather than an inferno.
* Despite the ''[[VideoGame/SonicRushSeries Sonic Rush]]'' series establishing them as being from another dimension, ''VideoGame/SonicTheHedgehog2006'' and the ''VideoGame/SonicRivals'' series went on to claim Blaze and Eggman Nega (respectively) came from the future of Sonic's world (Nega in particular being Dr. Eggman's descendant). WordOfGod clarified Blaze as being from another dimension and Nega from the future in 2012.
* ''Franchise/{{Metroid}}'' games since ''VideoGame/MetroidZeroMission'' have established Samus's [[PoweredArmor Power Suit]] as [[PsychoactivePowers something formed and maintained by her will]] (and being knocked unconsicous causes the suit to dematerialize), and not so much a physical set of armor. This causes problems with the chronologically most recent game, ''VideoGame/MetroidFusion'' -- the plot of which hinges on the Power Suit being a physical object that remains around Samus whilst she is unconscious and can be infected by a parasite.
* Between the first and second ''Franchise/MassEffect'' games "thermal clips" were invented to replace the original heat sink system used by all guns. During the same period mechs became widely spread compared to their original limited numbers. This is an issue when rescuing Jacob's father, who was marooned eight years prior to the first game. Despite having been cut off from the galaxy the planet still has a plentiful supply of thermal clips and mechs.

[[folder:Web Animation]]
* ''Machinima/RedVsBlue'': WordOfGod says Grif was the Army's sole draftee, and his resentment of it drives him to be the world's biggest slacker. However, in the first episode, he says he "signed on to fight some aliens."

[[folder:Web Comics]]
* In ''Webcomic/{{Drowtales}}'' an update had a conversation play between two characters implying they had never met before that point, despite the characters having been established as close friends early in the series. This was quickly pointed out by fans and the conversation was edited and corrected.
* ''Webcomic/{{Teahouse}}'' has a few inconsistencies over the comic:
** Claret's hair colour changes from [[http://images.teahousecomic.com/comic/img/comic/3.jpg light green]] to [[http://images.teahousecomic.com/comic/img/comic/105.jpg a much darker one]].
** Axis' hair colour changes, his tattoos vanish and his skin tone has become lighter. [[http://i.imgur.com/YOQRI.jpg Seen here]], which also notes the sudden change in maid outfits.

[[folder:Web Original]]
* ''WebVideo/TheChroniclesOfJaller'': {{Invoked}}, {{Lampshaded}} and PlayedForLaughs in "Black Piraka Gets Noticed Part 2."
-->'''[[spoiler:Penguin the Penguin]]:''' Wait, vasn't there a table zere? And what's zat doing zere?
-->'''Axon:''' What-- Oh! ''(laughs)'' Yeah, we don't work very hard with continuity here. Those scenes were filmed months ago.
* WebVideo/TheNostalgiaCritic is usually pretty good with character continuity, but in the ''Signs'' review, he dismissively calls Shyamalon's character "Ma-Ti", when Ma-Ti's death in WebVideo/SuburbanKnights was a DespairEventHorizon for him that led into a sadder year and WebVideo/ToBoldlyFlee.
* ''WebVideo/DragonBallZAbridged'': In episode 21, the [[RunningGag "Krillin Owned" meter]] hits 13 when Krillin is unable to look away in time from Burter and Jeice's "Seizure Procedure" technique. It hits 13 again two episodes later when Krillin is slapped by Captain Ginyu-in-Goku.