History Main / SharedUniverse

** This is particular apparent between the ''Ghost Recon'' and ''H.A.W.X.'' games - multiple missions in the latter have the player supporting Ghost teams, and (plot inconsistencies aside due to them coming out two years apart) ''Future Soldier'' depicts the same conflict as in ''H.A.W.X. 2''. There's also ''Ghost Recon 2''[='=]s plot kicking off from the sinking of the ''USS Clarence E. Walsh'', an event depicted about halfway through ''Splinter Cell: Chaos Theory''.

** ''VideoGame/FarCry'' is in on the action, too. One mission in ''VideoGame/FarCry3'', which discusses "strange scientists" and "genetic memories", takes you to an abandoned Abstergo laboratory. ''VideoGame/FarCry2'' is definitely set in the same universe as it's sequel, but whether the original or [[VideoGame/FarCry4 the upcoming fourth entry]] are still in the universe have yet to be seen.

* ''Series/Mirrorman'', ''Series/Fireman'', ''Series/JumborgAce'' and possibly ''Series/BioPlanetWoO'' are implied to be set in the same universe as the Showa entries of the ''Franchise/UltraSeries'' due to the appearance of various monsters and characters in several shows.

* The ''Franchise/KamenRider'' series, specifically the Showa Era all exists in the same universe as evidenced by the presence of this common enemy called "[[BigBad The Great Leader]]". Later on in the old Heisei era, Series/KamenRiderKuuga and Series/KamenRiderAgito shared the same universe. And then in the new Heisei Era, Series/KamenRiderDouble, Series/KamenRiderOOO, and Series/KamenRiderFourze exists in their own SharedUniverse for their [[BigBad Big Bads]] are all linked by the NebulousEvilOrganization "Foundation X" (the new generation's equivalent of Shocker, it would seem).
** Kamen Rider Fourze pretty much confirms that all Kamen Rider series are in the same universe.

* The Creator/TomClancy series games (''VideoGame/SplinterCell'', ''VideoGame/GhostRecon'', and ''{{VideoGame/HAWX}}'') share a single universe, and often have crossover cameos with each other (this is particularly evident between ''Ghost Recon'' and ''HAWX'').
* [[http://youtu.be/bKw-NfxseUY This easter egg]] from ''VideoGame/AssassinsCreedIVBlackFlag'' heavily suggests that ''Franchise/AssassinsCreed'' and ''VideoGame/WatchDogs'' share a universe. [[spoiler:Considering that ''ACIV''[='s=] MacGuffin would be of tremendous use in ''VideoGame/WatchDogs'', this is unsurprising.]]
** Oliver Garneau from ''Black Flag's'' [[FramingDevice Frame Narrative]] leaves for Chicago (Where ''Watch_Dogs'' is set) during the game. [[spoiler:In ''Watch_Dogs'', [[PlayerCharacter Aiden]] kills him as part of an optional side mission under mysterious orders from]] [[spoiler:[[Characters/AssassinsCreedTheAssassins "The Brotherhood"]].]] There are also several references to Abstergo Industries, and, at one point, a child can be found playing ''[[VideoGame/AssassinsCreedIIILiberation Assassin's Creed III: Liberation]]'', which is a video game produced by Abstergo Entertainment in-universe.
** ''[[Franchise/FarCry Far Cry]]'' is in on the action, too. One mission in ''[[VideoGame/FarCry3 Far Cry 3]]'', which discusses "strange scientists" and "genetic memories", takes you to an abandoned Abstergo laboratory. ''[[VideoGame/FarCry2 Far Cry 2]]'' is definitely set in the same universe as it's sequel, but whether [[VideoGame/FarCry the original]] or [[VideoGame/FarCry4 the upcoming fourth entry]] are still in the universe have yet to be seen.
** ''{{Franchise/Rayman}}'' and ''[[VideoGame/FarCry3BloodDragon Far Cry 3: Blood Dragon]]'' are also [[ShowWithinAShow video games in-universe]], presumably by Abstergo Entertainment.

* Franchise/UniversalHorror is one of the earliest cinematic examples. From the 1930s to the 1950s, [[Creator/{{Universal}} Universal Pictures]] (later Universal Studios) released various horror films featuring [[Film/Dracula1931 Dracula]], [[Film/Frankenstein1931 Frankenstein's Monster]], [[Film/TheWolfMan1941 The Wolf Man]] and others, and eventually had them [[{{Crossover}} cross over]] with each other, creating or at least codifying the MonsterMash.

* ''VideoGame/ProjectXZone'' is a MassiveMultiplayerCrossover so it deals with characters from multiple different universes together, seemingly [[AvertedTrope averting this trope.]] But on the other hand, some characters from separate series entirely are aware of each other, suggesting that games from different companies entirely might share the same universe.

** ''Project X Zone'' is a continuation of ''VideoGame/NamcoXCapcom'' (and ''VideoGame/EndlessFrontier'' by proxy), which already established that, if only for the sake of that crossover's continuity, all involved series exist in the same universe, only separated by varying layers of time and space. As a large part of the ''[=NxC=]'' cast returned for ''Project X Zone'', a few of these instances can be chalked up to "X and Y character [[ContinuityNod already met]]." There's also no word on if [[VideoGame/CapcomVsWhatever other previous crossovers]] have any bearing on the game (the ''VideoGame/MarvelVsCapcom'' series and ''VideoGame/TatsunokoVsCapcom'' in particular, where many of the characters here already crossed paths or were at least aware of worlds other than their own[[note]]one such example being [[VideoGame/{{Darkstalkers}} Morrigan]] knowing of VideoGame/ViewtifulJoe due to a past correspondence with Alastor, who is confirmed to be the spirit of the Devil Arm of the same name from the original ''Franchise/DevilMayCry'' in the [=PS2=] port of ''Viewtiful Joe''[[/note]]), although there may be support for the idea in-game: [[VideoGame/FightingVipers Bahn]] recognizes [[VideoGame/VirtuaFighter Akira and Pai]] due to Sega's own non-canon crossover, ''VideoGame/FightersMegamix''.

* As well as the InfernalDevices prequel series, ''Literature/TheMortalInstruments'' to be set in the same universe as the ModernTalesOfFaerie by HollyBlack. Val and Luis from Valiant are the homeless kids Clary sees in the first book and Simon listens to Stepping Razor, Ellen's band from Tithe.

* ''Series/BarnabyJones'' shares a universe with ''Cannon'', as shown in the former's pilot episode (Cannon is friends with Barnaby's soon-to-be-murdered son).

[[caption-width-right:336:[[WesternAnimation/TheClevelandShow Cleveland]], [[WesternAnimation/AmericanDad Stan]] and [[WesternAnimation/FamilyGuy Peter]] [[MexicanStandoff pointing guns at each other]].]]

** ''SomethingPositive'' and...

*** ''GirlsWithSlingshots''
*** ''PennyAndAggie''

*** In fact, all of the above apparently share a universe now, since characters from ''SomethingPositive'' and ''GirlsWithSlingshots'' have appeared in ''[[WalkyVerse Shortpacked!]]''.
*** QuestionableContent as well, though mainly as the odd cameo (and an implied spacewarp between the Shortpacked store and Coffee of Doom, which is actually pretty reasonable by QC standards at least - it's since been established that the coffeshop near Shortpacked which has the same layout, staff, clientele and espresso dinosaur as Coffee of Doom is called Coffeeright Theft).

*** [[{{Melonpool}} Melonpool, Ralph,]] [[{{Zortic}} Splink, and Zortic]] have all appeared in ''TheInexplicableAdventuresOfBob'' Aparently Voluptua knows Ralph and Splink's family.

** ''TheWotch'' and ''TheAccidentalCentaurs''

* Various [[{{Creepypasta}} creepypastas]] are at least implied to take place in the same Universe, given how many of them are presented as being real. The SCPFoundation and at least some of the SlenderManMythos may be part of it too.
* DragonBallAbridged and YuGiOhTheAbridgedSeries, seeing as how often they've appeared in each other's shows, especially as one video claims that Kaiba is [[spoiler: a robot built by Freiza.]]

* ''SpaceGhostCoastToCoast'' and its MorePopularSpinoff ''AquaTeenHungerForce'', as well as its less popular spinoffs ''The Brak Show'' and ''HarveyBirdmanAttorneyAtLaw''. Space Ghost has a cameo in the ''AquaTeenHungerForce'' movie.

* The {{WebOriginal/Metaverse}} is a slowly developing example, due to being comprised of live action videos, mostly made on a zero dollar budget.
* The ThatGuyWithTheGlasses Universe which consists of all the website's shows, AskThatGuyWithTheGlasses, AtopTheFourthWall, BadMovieBeatdown, TheCinemaSnob, DiamandaHagan, FamiliarFaces, JesuOtaku, TheNostalgiaChick, The NostalgiaCritic, ThatDudeInTheSuede, and numerous others, as well as ''WebVideo/TheAngryVideoGameNerd''.

*** Also, ''KillBill'' is a ShowWithinAShow. It's a reworking of the failed TV pilot ''Fox Force 5'' mentioned in ''PulpFiction''. The actress playing The Bride is not just Uma Thurman, it's Uma Thurman as Mia Wallace.

* The showa era of {{Kaiju}} films, which consists of {{Godzilla}}, {{Mothra}}, and {{Rodan}},as well as the TV show ZoneFighter.

* A subtle link exists among four of Marvel and Sunbow's MerchandiseDriven 1980s cartoons — the character of Hector Ramirez, a [[NoCelebritiesWereHarmed thinly veiled]] {{parody}} of Geraldo Rivera, appears in ''WesternAnimation/{{Inhumanoids}}'', ''WesternAnimation/GIJoeARealAmericanHero'', ''WesternAnimation/TheTransformers'' and ''WesternAnimation/{{Jem}}''; [[http://buzzdixon.com/media/the-many-faces-of-hector-ramirez/ his creator claims that this forces them into the same universe,]] though this has not been officially confirmed.

** In Transformers Animated: The [=AllSpark=] Almanac II, Vector Prime confirms that all these shows and C.O.P.S.(In the toyline, the hero Checkpoint is a descendant of Beach Head) take place in the Transformers generation 1 continuity.

* A subtle link exists among four of Marvel and Sunbow's MerchandiseDriven 1980s cartoons — the character of Hector Ramirez, a [[NoCelebritiesWereHarmed thinly veiled]] {{parody}} of Geraldo Rivera, appears in ''WesternAnimation/{{Inhumanoids}}'', ''WesternAnimation/GIJoeARealAmericanHero'', ''WesternAnimation/TheTransformers'' and ''WesternAnimation/{{Jem}}'', though this has not been confirmed.

** It goes deeper in that in some cases. 3rd-season Autobot ally Larissa Fairborn has been explicitly stated to be the daughter of Joes Flint and Lady Jaye, and an episode of the same season featured a villain called "Old Snake" who was clearly Cobra Commander.

** In Transformers Animated: The [=AllSpark=] Almanac II, Vector Prime confirms that all these shows and C.O.P.S. take place in the Transformers generation 1 continuity.

* ''Series/{{Friends}}'' shares a universe with ''MadAboutYou'' due to Phoebe and Ursula being twins. Additionally ''Friends'' also had a spin-off called {{Joey}}, which is also part of that universe as well

* Since the ''WesternAnimation/LooneyTunes'' characters are the teachers to the ''WesternAnimation/TinyToonAdventures'' characters, this makes an obvious example. A not-so-obvious addenum to this is that the ''Looney Tunes'' characters also made several cameos on ''WesternAnimation/{{Animaniacs}}'' and ''WesternAnimation/{{Histeria}}'', which therefore means they too share the same universe. Additionally, the ''WesternAnimation/{{Animaniacs}}'' characters made cameos on ''WesternAnimation/{{Freakazoid}}!'' (and vice versa) so this also makes this part of the WB Animated Universe ([[FanNickname as it has been nicknamed]]).

*** If we take Kim's inserted cameo into the "Spot the Diff" version of a ''WesternAnimation/PhineasAndFerb'' episode into account, this apparently means that Phineas and Ferb also inhabit that universe.
**** And as of WesternAnimation/PhineasAndFerbMissionMarvel, the {{Marvel}} Universe has been revealed to also inhabit this SharedUniverse. A version of it, anyway. The events of "Mission Marvel" are part of ''PhineasAndFerb'', but not of the Marvel shows whose characters appeared.

* The Creator/CartoonNetwork universe was first established with "[[CrisisCrossover The Grim Adventures of the KND]]". It consists of:
** ''WesternAnimation/CodenameKidsNextDoor''
** ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy''
** ''[[WesternAnimation/EdEddnEddy Ed, Edd, and Eddy]]''
** ''WesternAnimation/ThePowerpuffGirls''
** ''WesternAnimation/DextersLaboratory''
** ''WesternAnimation/MyGymPartnersAMonkey''
** ''WesternAnimation/FostersHomeForImaginaryFriends''
** ''WesternAnimation/SquirrelBoy''
** Arguably ''WesternAnimation/CampLazlo'' as well due to being part of the [[CrossThrough Cartoon Network Invaded crossover]] event.
*** The CN Invaded event was one of four [=EEnE=] specials that were mentioned in the [=EEnE=] movie.
** Earlier, it was established that ''WesternAnimation/ThePowerpuffGirls'' and ''WesternAnimation/DextersLaboratory'' shared a universe. While Dexter and the girls sadly never (offically) met, both parties have met [[WesternAnimation/DextersLaboratory The Justice Friends]]. Dexter himself made constant [[TheCameo cameos]] in PPG to the point where it was practically a RunningGag.

* ''WesternAnimation/FairlyOddParents'' seems to share a reality with ''WesternAnimation/DannyPhantom'' because in a first season episode of the latter, Tucker and Danny are standing in front of a Crash Nebula video game. Crash Nebula is an in universe comic book character that originated in ''WesternAnimation/FairlyOddParents''.
* All three current Marvel Animation shows, ''WesternAnimation/UltimateSpiderMan'', ''WesternAnimation/AvengersAssemble'', and ''WesternAnimation/HulkAndTheAgentsOfSMASH'', seem to take place in the same universe. BroadStrokes aside, they seem to take place at different times given how Hulk speaks differently in each of them (from HulkSpeak in ''Ultimate Spider-Man'' to speaking in complete sentences in ''Agents of SMASH'', with a transitional speech pattern for ''Avengers''). At the very least, they have similar head writers (Paul Dini, Man of Action) and share the same voice actors for their vast amounts of characters across the shows (ie, Drake Bell as Spidey, Adrian Pasdar as Iron Man, and Fred Tatsciore as Hulk).

* ''WesternAnimation/AvatarTheLastAirbender'' and ''WesternAnimation/TheLegendOfKorra''.

* ''SpaceGhostCoastToCoast'' and its MorePopularSpinoff ''AquaTeenHungerForce'', as well as its less popular spinoffs ''The Brak Show'' and ''HarveyBirdmanAttornyAtLaw''.

* WordOfGod confirms that ''WesternAnimation/TransformersPrime'' and ''WesternAnimation/TransformersRescueBots'' take place in the same universe. This was finally confirmed in-universe by the ''Rescue Bots'' episode "Bumblebee To The Rescue". It's also the reason ''Rescue Bots'' is set on an island and ''Prime'' is set in the American midwest. This allows the two shows to reference each other and interact while still being seperate.