History Main / SharedUniverse

* Creator/CyberConnect2's ''VideoGame/LittleTailBronx'' universe is comprised of the ''VideoGame/TailConcerto'' and ''VideoGame/{{Solatorobo}}'' action games, along with the ''Mamoru-kun'' educational browser game and the now-defunct ''Little Tail Story'' mobile RPG (both of which were [[NoExportForYou Japan-exclusive]]). The turn-based RPG ''VideoGame/FugaMelodiesOfSteel'' titles take place [[{{Prequel}} several centuries prior]] to any of these games, and are [[spoiler:set in the same location as ''Solatorobo'']].

* Creator/CyberConnect2's ''VideoGame/LittleTailBronx'' universe is comprised of the ''VideoGame/TailConcerto'' and ''VideoGame/{{Solatorobo}}'' action games, along with the ''Mamoru-kun'' educational browser game and the now-defunct ''Little Tail Story'' mobile RPG (both of which were [[NoExportForYou Japan-exclusive]]). The turn-based RPG ''VideoGame/FugaMelodiesOfSteel'' takes place [[{{Prequel}} several centuries prior]] to any of these games, and is [[spoiler:set in the same location as ''Solatorobo'']].

-->-- '''ComicBook/NickFury''', ''Film/IronMan1''

** ''[[Film/Shazam2019 SHAZAM!]]'' also features a cameo by Ms. Glover from ''Film/{{Lights Out|2016}}'' as the foster care counselor, thus putting that film into the DCEU as well.

** Potential movies that supposedly take place in the ''Schneider-verse'' along with all the numerous shows are ''WesternAnimation/TheIncredibles'', ''Film/ReservoirDogs'', ''Film/TrueRomance'', ''Film/PulpFiction'', ''Film/TheAdventuresOfSharkboyAndLavagirl'', ''Film/TrickrTreat'', ''Film/TheSpiderwickChronicles'', ''Film/{{Krampus}}'', ''Film/DemonKnight'', ''Film/InglouriousBasterds'', ''Film/LightsOut'', ''Film/{{SHAZAM}}'', ''Film/JurassicPark'', ''Film/TheLost WorldJurassicPark'' and ''Film/JurassicParkIII''.

** The {{Elseworld}} titles ''ComicBook/BatmanTwoFaces'' (a retelling of ''Literature/TheStrangeCaseOfDrJekyllAndMrHyde'' where [[spoiler:Bruce Wayne]] is Dr. Jekyll and [[spoiler:the Joker]] is Mr. Hyde) and ''ComicBook/TheSupermanMonster'' (a retelling of ''Literature/{{Frankenstein}}'' where Lex Luthor plays the part of Victor Frankenstein with Superman serving as the monster he creates) are indicated to take place in the same continuity, as both stories have a FramingDevice of Commissioner James Gordon and Peregrine White exchanging tales

** Haggar appeared in ''Slam Masters'' as a wrestler. The original Japanese storyline placed the games before Haggar was elected. However, the U.S. localization refers to him as the "former mayor of Metro City," which gets backed up by Hugo's ending in ''[[VideoGame/StreetFighterIII 2nd Impact]]''. A couple of ''Street Fighter'' characters have cameos throughout the series (Chun-Li in the original and Zangief and Balrog in ''Ring of Destruction''). [[AllThereInTheManual Supplemental materials]] for both series even state that Birdie and Tim were close friends who eventually formed a tag team called the "500 Trillion Powers", El Stingray and El Fuerte shared a Lucha Libre mentor named Meteorito Jr., and Yoko Harmageddon, Rainbow Mika's mentor and trainer, was forced to retire after sustaining a CareerEndingInjury in the ring against Black Widow.

* Various universes of Creator/MarvelComics that are extensively contributed to by several writers:
** The Franchise/MarvelUniverse of Earth-616.
** The ComicBook/UltimateMarvel universe.
** ComicBook/Marvel2099

** A few ''Final Fight'' characters (namely Guy, Sodom, Rolento, and Cody) [[{{Transplant}} have appeared as fighters]] in the ''VideoGame/StreetFighterAlpha'' series, with stages and endings featuring cameos by other characters. Andore appears in ''VideoGame/StreetFighterIII'' under the name of "Hugo" with Poison acting as his manager. Both Guy and Cody returned in ''[[VideoGame/StreetFighterIV Super Street Fighter IV]]''. Additionally, Chun-Li makes a cameo in Stage 1 of ''Final Fight 2'', the portable versions of ''Alpha 3'' features Maki from ''Final Fight 2'' as an extra character (based upon her ''[[VideoGame/CapcomVsSNK2MarkOfTheMillennium Capcom vs. SNK 2]]'' incarnation), and Cammy is a secret challenger at the Fight Club in ([[CanonDiscontinuity the non-canon]]) ''Final Fight: Streetwise''. ([[WildMassGuessing It's also believed by several fans]] that The Ghost, another pit fighter, is [[VideoGame/StreetFighterI Joe]] due to their similar appearances and fighting styles.) Hugo and Rolento later returned in ''Ultra Street Fighter IV'' with Poison as a newcomer (all three being ported from ''VideoGame/StreetFighterXTekken''). Even more recently did Abigail, the boss of the original game's Bay Area, show up as a playable character in ''VideoGame/StreetFighterV'', much to the surprise of many.
** Haggar appeared in ''Slam Masters'' as a wrestler. The U.S. localization refers to him as the "former mayor of Metro City," although the original Japanese storyline actually places the games before Haggar was elected. A couple of ''Street Fighter'' characters have cameos in the ''Slam Masters'' series (such as Chun-Li, Honda, and Balrog) and the Slam Masters are referenced in Hugo's ending in ''[[VideoGame/StreetFighterIII 2nd Impact]]''. [[AllThereInTheManual Supplemental materials]] in the ''SFV'' era also state that Yoko Harmageddon, Rainbow Mika's mentor and trainer, was forced to retire after sustaining a CareerEndingInjury in the ring against Black Widow.

** In ''Rival Schools'', Sakura has a cameo in the first game as an unlockable GuestFighter (with in-game lore and [[https://www.creativeuncut.com/gallery-10/rs-illust-sakura_hinata_natsu.html promotional artwork]] establishing Sakky as being ChildhoodFriends with Hinata and Natsu) while Hinata and Tiffany make background appearances in ''VideoGame/StreetFighterV'', followed by Akira joining the fray in the game's fifth wave of [[DownloadableContent DLC]]. WordOfGod [[https://game.capcom.com/cfn/sfv/column/130231 states]] Hinata picked up her fighting skills from online courses held by Ken (thus explaining her {{Shotoclone}} credentials), whereas [[ClassRepresentative Chairperson]] learned Saikyo--yes, ''[[JokeCharacter that]]'' [[VideoGame/StreetFighterAlpha Saikyo]]--through a correspondence course. In addition it's implied that Ran may be related to Dan himself, both sharing the last name of Hibiki.

* ''VideoGame/DigDug'', ''VideoGame/{{Baraduke}}'' (or ''Alien Sector'' if you prefer), and ''VideoGame/MrDriller'' are set in the same world, by virtue of Taizo Hori and [[GenderBlenderName Toby]] [[DubNameChange "Kissy"]] [[SamusIsAGirl Masuyo]] being the parents of Susumu, Ataru, and Taiyo Hori (the first of the three being TheHero of the ''[[SpinoffBabies Mr. Driller]]'' series) and the events of the first ''Dig Dug'' being referenced directly in ''Mr. Driller'' (as the "Dig Dug Incident").
** Additionally, Pookas often show up in ''VideoGame/PacMan'' titles, hinting that they might possibly share a universe, although considering the number of elements that overlap in Namco games in general (the Special Flag from ''[[VideoGame/RallyX Rally-X]]'' showing up in several other games for instance), this might not be the case.
** The United Galaxy Space Force links ''30 games'' into the same universe, known as [[http://ugsf-series.com/ the UGSF Series.]]

* ''WesternAnimation/{{Rugrats}}'' (and by extension the sequel series "All Grown Up") and ''WesternAnimation/TheWildThornberrys'' share a world, as shown in the theatrical crossover movie ''WesternAnimation/RugratsGoWild''.
%%and''WesternAnimation/RocketPower''.

* ''WesternAnimation/{{Amphibia}}'', ''WesternAnimation/TheOwlHouse'' and ''WesternAnimation/GravityFalls'' are implied to take place in the same universe, as all three shows contain references and (background) cameos that place them in the same setting as each other. On a meta level, both of the former shows were created by [[Creator/MattBraly alumni]] [[Creator/DanaTerrace from]] ''Gravity Falls''.
** ''The Owl House'' to ''Gravity Falls'': Eda is mentioned as using "Marilyn" as an alias in the Human World, the same name as Grunkle Stan's purported ex-wife, who otherwise matches Eda's description to a T.
** ''Gravity Falls'' to ''Amphibia'': An [[AlternateSelf alternate]] version of Grunkle Stan shows up in one episode, and Frog Soos (who is Soos, [[CaptainObvious but a frog]]) suggests the possibility that they are merely one version of multiple multiversal incarnations of the same beings.
** ''Amphibia'' to ''The Owl House'': [[Recap/AmphibiaS3E15IfYouGiveAFrogACookie "If You Give A Frog A Cookie"]] and [[Recap/TheOwlHouseS2E21KingsTide "King's Tide"]] confirms the ''Amphibia'' and ''The Owl House'' connection, first with a blurry picture of the owl house itself taken through a flawed dimensional portal, and then with a news article about Anne Boonchuy open on Camila Noceda's ipad.

* Creator/DCComics' Franchise/TheDCU is an example of this, with multiple monthly titles who might not even have the same creative team month to month.

* Creator/GeorgeMacDonaldFraser's novels ''Black Ajax'' and ''Mr American'' explicitly take part in the same universe as his most famous creation, ''Literature/{{Flashman}}'', which in turn takes place in the same universe as ''Literature/TomBrownsSchooldays''. In addition, Flashman himself encounters Colonel Sebastian Moran (one of Literature/SherlockHolmes's adversaries) in ''Flashman and the Tiger'', resulting in an alternative perspective of "The Adventure of the Empty House" - implying that Holmes's cases take place in the same universe as Flashy's many misadventures.
** This gets more complicated when you factor in the Holmes continuation novel ''Literature/TheSevenPercentSolution'', in which Holmes and Watson encounter the hero of ''Literature/ThePrisonerOfZenda'' which is explicitly stated to be a work of fiction in the ''Literature/{{Flashman}}'' universe (the result of Flashy drunkenly retelling the events of ''Royal Flash'' to a journalist called [[Creator/AnthonyHope 'Hawkins']]).
* ''Literature/ChroniclesOfNarnia'': Thanks to a single throwaway line, we know that the series take place in the same universe as the Literature/SherlockHolmes stories. In ''The Last Magician'', which is chronologically the first story in the series, the narrator mentions that the events of the book were happening at the same time that Mr. Sherlock Holmes was still taking cases in Baker Street.

* The ''Franchise/SuperMarioBros'' and ''Franchise/DonkeyKong'' series exist in the same universe, by virtue of sharing [[VideoGame/DonkeyKong a common first game]]. Additionally, due to first appearing in ''VideoGame/SuperMarioWorld'' and ''VideoGame/SuperMarioLand2SixGoldenCoins'' respectively, the ''VideoGame/YoshisIsland'', ''VideoGame/WarioLand'', and ''VideoGame/WarioWare'' series are also part of the expanded ''Super Mario'' universe, though in a ''very'' loose technicality for the latter two, as unlike the ''Yoshi'' and ''Donkey Kong'' universes which have a great presence in Mario games & spinoffs, the ''Wario'' universes have minimal to no presence in the Mario series outside of Wario himself.

** Many other Nintendo games have references to each other that imply they share a universe. There are many examples of minor enemies from one game series having appearances in other games, although often with the names changed. For example, ''VideoGame/TheLegendOfZeldaLinksAwakening'' has several enemies from the Mario games [[spoiler:though that particular title has the justification that it takes place in a dream world]]. Although several other Nintendo games have the other games existing as [[ShowWithinAShow games in their universe]]. For most games, the degree to which they are connected is left unclear.

** Phase 4: The current phase; a rebuilding period setting up a new Multiverse MythArc. While previous TV shows were always [[RestrictedExpandedUniverse held at arms' length from the movies]], this phase starts incorporating TV miniseries that are fully integrated with the movies' plotlines. While some of the entries introduce the Multiverse and {{Alternate Timeline}}s (''Series/WandaVision'', ''Series/Loki2021'', ''WesternAnimation/WhatIf2021'', ''Film/SpiderManNoWayHome'', and ''Film/DoctorStrangeInTheMultiverseOfMadness''), most of the rest focus on the retirement or death of several veteran heroes and PassingTheTorch to {{Legacy Character}}s (''Film/SpiderManFarFromHome'' fits this despite technically being in Phase 3; and Phase 4 itself includes ''Series/TheFalconAndTheWinterSoldier'', ''Film/BlackWidow2021'', ''Series/Hawkeye2021'', ''Series/MsMarvel2022'', ''Film/ThorLoveAndThunder'', ''Series/SheHulkAttorneyAtLaw'', and ''Film/BlackPantherWakandaForever''). The few remaining feature origins for brand new heroes unconnected to the old ones (''Film/ShangChiAndTheLegendOfTheTenRings'', ''Film/{{Eternals}}'', and ''Series/MoonKnight2022'').

*

* ''LightNovel/SwordArtOnline'' and ''LightNovel/SwordArtOnlineAlternativeGunGaleOnline'' exist in the same universe and occur alongside each other, only focusing on different sets of characters. However the events from ''Sword Art Online'' are constantly mentioned in ''Gun Gale Online''. ''LightNovel/AccelWorld'' appears to exist in the same universe too, but it's set 21 years in the future from SAO so it's a lot less apparent.

* Every "Bret Easton Ellis" book share the same cast of characters and even places in the same world, even old characters making appears in later books, like for example in "The Rules of Attraction" on of the main characters is Sean Bateman, his brother "Patrick Bateman" had a chapter in the book and later became the main character in "American Psycho", even Sean had a minor appear. Also is indicated that "Story of My Life" by Ellis friend's "Jay [=McInerney=]" also is set in this world for the appear of the protagonist "Alison Poole" and she even is a main character in "Glamorama" as Victor's girlfriend.

''WesternAnimation/SpongeBobSquarePants'', along with its two spin-offs, ''WesternAnimation/KampKoral'' and ''WesternAnimation/ThePatrickStarShow'', are implied to take place in a single universe, despite their conflicting canonicity. The shows regularly intersect with one another, with ''Kamp Koral''’s Narle and Nobby appearing in ''[=SpongeBob=]'' twice, Cecil, Bunny and [=GrandPat=] of ''The Patrick Star Show '' appearing in one episode of ''Kamp Koral'', and [=GrandPat=] briefly visiting the original ''[=SpongeBob=]'' universe once.

''WesternAnimation/SpongeBobSquarePants'', along with its two spin-offs, ''WesternAnimation/KampKoral'' and ''WesternAnimation/ThePatrickStarShow'', are implied to take place in a single universe, despite their conflicting canonicity. The shows regularly intersect with one another, with ''Kamp Koral''’s Narle and Nobby appearing in ''[=SpongeBob=]'' twice, Cecil, Bunny and [=GrandPat=] of ''The Patrick Star Show '' appearing in one episode of ''Kamp Koral'', and [=GrandPat=] briefly visiting the original ''SpongeBob'' universe once.

** ''The Path to Ascendancy'': Esslemont. {{Prequel}} trilogy chronicling the early adventures of Kellanved and Dancer and how they would eventually come to found the Malazan Empire. [[note]]''Dancer's Lament'', ''Deadhouse Landing'' and ''Kellanved's Reach''[[/note]]

* Series/TheVampireDiariesUniverse, consisting of ''Series/TheVampireDiaries'' and its spin-offs, ''Series/TheOriginals'' and ''Series/{{Legacies}}''. The first two actually aired concurrently from 2013 to 2017.

** The United Galaxy Space Force links ''[[UpToEleven 30 games]]'' into the same universe, known as [[http://ugsf-series.com/ the UGSF Series.]]

* ''VideoGame/DigDug'', ''VideoGame/{{Baraduke}}'' (or ''Alien Sector'' if you prefer), and ''VideoGame/MrDriller'' are set in the same world, by virtue of Taizo Hori and [[GenderBlenderName Toby]] [[DubNameChange "Kissy"]] [[SamusIsAGirl Masuyo]] being the parents of Susumu, Ataru, and Taiyo Hori (the first of the three being TheHero of the ''[[SpinoffBabies Mr. Driller]]'' series) and the events of the first ''Dig Dug'' being referenced directly in ''Mr. Driller'' (as the "Dig Dug incident").

** The United Galactic Space Force links ''thirty games'' into the same universe, known as [[http://ugsf-series.com/ the UGSF Series.]]
* ''VideoGame/EVEOnline'' and the FPS ''VideoGame/DustFiveOneFour'' are part of the same universe... ''literally''. Players can accept contracts and do missions for the player-run companies of ''EVE Online'', and even form their own corporations that ''EVE Online'' players are able to join.

* Most of the series produced by Jack Webb take place in the same universe, including ''Franchise/{{Dragnet}}'', ''Series/AdamTwelve'', ''Series/{{Emergency}}'' and the short-lived Robert Conrad vehicle, ''The D.A.''

* Although most Disney worlds depicted in ''Franchise/KingdomHearts'' are alternate universe versions of the original properties they represent, WordOfGod states that the staff of Pixar worked with Creator/TetsuyaNomura to fit the storylines of the Pixar worlds in ''VideoGame/KingdomHeartsIII'' into the continuity of the original films, and that as far as Pixar is concerned the events of the Toy Box world is "Toy Story 2.5", meaning that the ''WesternAnimation/ToyStory'' films canonically take place within the universe of ''Kingdom Hearts''. The same is likely true of Monstropolis and ''WesternAnimation/MonstersInc'', albeit without the same explicit WordOfGod.