History Main / IntraFranchiseCrossover

** ''WesternAnimation/SpiderManTheAnimatedSeries'' has the "Spider Wars", which (along with the later ''VideoGame/SpiderManShatteredDimensions'', mentioned in the Video Games section) actually inspired the ''ComicBook/SpiderVerse'' comic book storyline. Here, Madame Web (and later the Beyonder) first recruited Spider-Man from the main universe of the series and later recruited various alternate versions of him, including [[https://marvel.fandom.com/wiki/Spider-Armor_MK_I Armored Spider-Man]] (a kind of "[[ComicBook/IronMan Tony Stark]]" version of Peter Parker), Six-Armed Spider-Man (a mutated version of him that permanently has six arms, seen in comics and the same series but GoneHorriblyWrong), Spider-Man with ComicBook/DoctorOctopus' arms (predating ''[[ComicBook/SuperiorSpiderMan2013 Superior Spider-Man]]'' by decades), Spider-Man [[Creator/TobeyMaguire as]] [[Creator/AndrewGarfield an]] [[Creator/TomHolland actor]], and even the ComicBook/ScarletSpider (Ben Reilly as in ''ComicBook/TheCloneSaga''). This group is simply named the ''[[https://marvel.fandom.com/wiki/Spider-Men_(Multiverse) Spider-Men]]''.

** ''VideoGame/PokemonMasters EX'', in addition to being a crossover between all the core series games [[VideoGameLongRunners up to that point]] (2019) and beyond (complete with characters either explicitly confirmed to hail from {{Alternate Universe}}s, such as the ''[[VideoGame/PokemonUltraSunAndUltraMoon US/UM]]'' versions of [[VideoGame/PokemonRedAndBlue Giovanni]] and [[VideoGame/PokemonDiamondAndPearl Cyrus]], or characters implied to be [[AlternateSelf AU variants of one another]], such as [[VideoGame/PokemonRedAndBlue Leaf]] and [[VideoGame/PokemonLetsGoPikachuAndLetsGoEevee Green]]), featured special collaboration events with the anime, bringing in Ash and Jessie & James as playable characters. Furthermore, while Ash is indicated to have arrived in Pasio at some point during the events of ''[[Anime/PokemonJourneysTheSeries Journeys]]'', Jessie & James instead hail from the {{alternate|Continuity}} film continuity that began with ''Anime/PokemonIChooseYou'', being pulled from around the time of ''[[Anime/PokemonSecretsOfTheJungle Secrets of the Jungle]]''.

* The final episode of ''WesternAnimation/Ben102016'' was ''Alien X-Tinction'', a one-hour special that had Ben team up with the all the differently-aged versions of himself from the "Classic" continuity, as well as the version of Gwen who got the TransformationTrinket instead.

In particular, when a LongRunner does a {{crossover}} with itself, there will usually be so many iterations that it has to narrow down which ones to focus on. Sometimes they focus on the original version which started the franchise, sometimes they focus on the most popular. It could also be some sort of education about the more unknown versions for casual viewers, and can be the most recent version since that's what is producing more money now. Regardless of which, such crossovers usually give equal focus to two or more versions if both are loved and well-known.

** ''Rockman.EXE Operate Shooting Star'' is a Japan-only UsefulNotes/NintendoDS remake of the first ''VideoGame/MegaManBattleNetwork'' with an added chapter in which Geo Stelar of ''VideoGame/MegaManStarForce'' travels back in time and teams up with his predecessors.

** Its sequel, ''VideoGame/PersonaQ2NewCinemaLabyrinth'', reunites the ''P3'' and ''P4'' casts on top of bringing in [[VideoGame/Persona5 the Phantom Thieves of Hearts]] ''and'' the female protagonist exclusive to ''Persona 3 [[UsefulNotes/PlayStationPortable Portable]]'' (who is implied to be an AlternateSelf to [[CuttingOffTheBranches her mainline counterpart]]). While the same Timey-Wimey shenanigans ensue [[spoiler:once again to get around the ''P3'' protagonist's canonical death (as well as the fact that ''P5'' is at least a few years farther along in the timeline than ''P4'' was)]], [[spoiler:Joker, the PlayerCharacter of ''5'' and ''Q2'', appears to be the ''only'' person outside of the Velvet Room attendants to exhibit RippleEffectProofMemory after returning to his time, as he recognizes [[OriginalGeneration Hikari]] while attending a high school film festival in the epilogue]].

*** The game features the modern Sonic from the Dreamcast era, who was redesigned with green eyes, longer legs and smaller belly, meeting through time travel the classic Sonic from the Genesis/Mega Drive era, who is pudgy, has black eyes and short legs, and also [[TheVoiceless never talks]].
*** The gameplay is divided between the two characters, the Classic Sonic levels are played just like the Genesis 2D platformers but with 3D graphics, while the Modern Sonic levels are similar to ''VideoGame/SonicUnleashed'', having 3D gameplay but some 2D sections, but in those 2D sections, Modern Sonic can use moves that his classic counterpart can't.

*** Each Era has its own boss fights too, there is the final boss of ''VideoGame/SonicTheHedgehog2'' fought by Classic Sonic, and Perfect Chaos (''VideoGame/SonicAdventure'') and Egg Dragoon (''Sonic Unleashed'') fought by Modern Sonic, the 3DS version has different bosses, and there's also rival battles, with Metal Sonic being the first and fought by Classic Sonic, Shadow and Silver being the second and third and fought by Modern Sonic.

** Classic Sonic and Modern Sonic once again team up in the sequel game ''VideoGame/SonicForces'', the [[VideoGame/SonicMania other part]] of the [[MilestoneCelebration 25th anniversary celebration]] of the franchise, in which the player can choose between three different styles, Classic Sonic style, Modern Sonic style and an [[PlayerCharacter Avatar]] style, a mode in which the player can create their own character. However, ''Forces'' seemingly retcons ''Generations'' by stating that Classic Sonic is not Sonic from the past, and is instead another Sonic from [[AlternateUniverse another dimension]], [[FanDislikedExplanation something fans weren't pleased to learn]]. However, Creator/IanFlynn would assure fans that the Classic and Modern eras are all one timeline rather than a new splitting of timelines through time travel, brushing off that dialogue as potential translation error.

** For ''VideoGame/{{Castlevania}}'', ''Ultimate'' introduced both Simon Belmont, [[VideoGame/CastlevaniaI from the original game in the series]], and Richter Belmont, from ''[[VideoGame/CastlevaniaRondoOfBlood Rondo of Blood]]'', as playable fighters, with Alucard also appearing as an Assist Trophy deliberately designed after his ''[[VideoGame/CastlevaniaSymphonyOfTheNight Symphony of the Night]]'' incarnation. Likewise, there's various music tracks and Spirits of characters from multiple games in the series.
** The ''VideoGame/DragonQuest'' franchise has four different heroes from four different games in one fighter slot: Luminary from ''VideoGame/DragonQuestXI'', Erdrick from ''VideoGame/DragonQuestIII'', Solo from ''VideoGame/DragonQuestIV'' and Eight from ''VideoGame/DragonQuestVIII''. Luminary is the main character, and the other three work as alternate costumes.
** {{Subverted|Trope}} with ''VideoGame/XenobladeChronicles''. While [[VideoGame/XenobladeChronicles1 the first game]] and ''[[VideoGame/XenobladeChronicles2 2]]'' can be enjoyed as standalone adventures and the representatives from each on ''Smash'' (Shulk for the first game and Pyra/Mythra for ''2'') don't meet each other canonically in the series proper (they do get crossover DLC in ''2''), the big twist of ''2'' is that their respective worlds were split apart from each other and that their adventures are happening [[SimultaneousArcs simultaneously]]. Not only that, but ''VideoGame/XenobladeChronicles3'' drops all pretenses of this being a spoiler of any kind by explicitly being set in the future of both worlds and having characters from both meet each other, albeit not Shulk and Pyra/Mythra.

** ''WesternAnimation/SpiderManTheAnimatedSeries'' has the "Spider Wars", which (along with the later ''VideoGame/SpiderManShatteredDimensions'', mentioned in the Video Games section) actually inspired the ''ComicBook/SpiderVerse'' comic book storyline. Here, Madame Web (and later the Beyonder) first recruited Spider-Man from the main universe of the series and later recruited various alternate versions of him, including [[http://marvel.wikia.com/wiki/Spider-Armor_MK_I Armored Spider-Man]] (a kind of "[[ComicBook/IronMan Tony Stark]]" version of Peter Parker), Six-Armed Spider-Man (a mutated version of him that permanently has six arms, seen in comics and the same series but GoneHorriblyWrong), Spider-Man with ComicBook/DoctorOctopus' arms (predating ''ComicBook/SuperiorSpiderMan'' by decades), Spider-Man [[Creator/TobeyMaguire as]] [[Creator/AndrewGarfield an]] [[Creator/TomHolland actor]], and even the ComicBook/ScarletSpider (Ben Reilly as in ''ComicBook/TheCloneSaga''). This group is simply named the ''[[http://marvel.wikia.com/wiki/Spider-Men_(Multiverse) Spider-Men]]''.

* ''Fanfic/{{Erutcarf}}'' is one that features nearly '''every''' Sonic continuity, including obscure ones like the french [[https://sonic.fandom.com/wiki/Sonic_Adventures#Sonic_Adventures:_Dans_Les_Griffes_De_Robotnik Sonic Adventures]] comic and the [[https://sonic.fandom.com/wiki/Virgin_Books Virgin Books]] novels. The catalyst for this being the result of Shadow and Silver attempting to fix the [[WesternAnimation/SonicPrime Paradox Prism]] before it completely shatters, only to [[GoneHorriblyRight wind up fixing it too well]] and causing it to bring various realities together instead of splitting them apart. It's stated that this is because the Paradox Prism seen here itself is a fragment of the ''original'' Paradox Prism whose shattering created multiple different dimensions/continuities, but so much time has passed since that initial shattering that the dimensions have "grown out" and stabilized, hence why bringing them back together results in not a clean remerging, but [[RealityBleed realities blending together violently and trying to force themselves out as the "dominant" one]].

* ''Fanfic/{{Erutcarf}}'' is one that features nearly '''every''' Sonic continuity, including obscure ones like the french [[https://sonic.fandom.com/wiki/Sonic_Adventures#Sonic_Adventures:_Dans_Les_Griffes_De_Robotnik Sonic Adventures]] comic and the [[https://sonic.fandom.com/wiki/Virgin_Books Virgin Books]] novels. The catalyst for this being the result of Shadow and Silver attempting to fix the Paradox Prism before it completely shatters, only to wind up fixing it too well causing it to bring various realities together instead of splitting them apart.

* ''WesternAnimation/SpiderManIntoTheSpiderVerse'': Just like in ''ComicBook/SpiderVerse'', the movie is about Spider-Men from different universes landing in the home dimension of Miles Morales, fighting together to defeat the Kingpin and struggling to get back to their own dimensions. Its sequels would flip the script and have Miles team-up with other Spiders by traveling to their dimensions.