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* ''VideoGame/StoryOfSeasons2014'':
** Like most games in the series, the plot of "leaving your home in the city to become a farmer" paired with "various people to court and marry" opens itself up to original stories and SelfInsertFic. But in this case the player character has no backstory at all -- not even a grandfather that left them the farm -- and can be freely customized to look any way they want to, meaning any backstory the author wants can be done.
** Mistel and Iris are a two-person family with [[ParentalAbandonment no parents mentioned]]; Iris is said [[PromotionToParent to have raised Mistel herself]] from the time he was young. Many a fanfic can be written about just ''how'' they lost their parents. Same with what happened to Maurice's wife to make him a single parent raising two girls alone.
** One episode of ''Oak Tree Times'' has a random man call Klaus "Boss" and talk about a time when he lived in a bad part of a town and formed a gang. Klaus steps in before the man can tell more and asks him to be silent on the matter, to which the man agrees -- calling him "boss" again. Such a backstory leaves itself ripe for what Klaus did before he stopped being, in his words, an immature reckless kid with an outsized sense of justice.
** Lots of fanfic stories play with the fact that Licorice and Kamil are both {{Continuity Cameo}}s from the game ''Tale of Two Towns'' and so could have known each other before coming to Oak Tree Town, even living in separate towns there.
** Like most games in the series, the plot of "leaving your home in the city to become a farmer" paired with "various people to court and marry" opens itself up to original stories and SelfInsertFic. But in this case the player character has no backstory at all -- not even a grandfather that left them the farm -- and can be freely customized to look any way they want to, meaning any backstory the author wants can be done.
** Mistel and Iris are a two-person family with [[ParentalAbandonment no parents mentioned]]; Iris is said [[PromotionToParent to have raised Mistel herself]] from the time he was young. Many a fanfic can be written about just ''how'' they lost their parents. Same with what happened to Maurice's wife to make him a single parent raising two girls alone.
** One episode of ''Oak Tree Times'' has a random man call Klaus "Boss" and talk about a time when he lived in a bad part of a town and formed a gang. Klaus steps in before the man can tell more and asks him to be silent on the matter, to which the man agrees -- calling him "boss" again. Such a backstory leaves itself ripe for what Klaus did before he stopped being, in his words, an immature reckless kid with an outsized sense of justice.
** Lots of fanfic stories play with the fact that Licorice and Kamil are both {{Continuity Cameo}}s from the game ''Tale of Two Towns'' and so could have known each other before coming to Oak Tree Town, even living in separate towns there.
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* ''VideoGame/LikeADragon'': In canon, absolutely nothing is known about Majima's life prior to the Ueno Seiwa Hit in 1985, when he was twenty years old. There's only a general implication that he's not from the Kansai region because he fakes his Kansai accent. This is particularly odd because every other playable character in the franchise has a known backstory that goes back to their childhood. Therefore, it's extremely common in fanfics to cover his life prior to 1985, coming up with all sorts of backstories for him.
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* The ''VideoGame/{{Unreal}}'' series, especially the ''[[VideoGame/UnrealTournament Tournament]]'' games. In the SP games we're given several glimpses of what life on Na Pali used to be before/after the Skaarj invasion, the crash of the ISV-Kran, the landing of the Mercenaries and before the crash of the UMS Vortex Rikers, including [[PlayerCharacter Prisoner 849]]'s vague backstory. We're also left wondering what happened after [[spoiler:Prisoner 849 blows the UMS Bodega Bay]], with either both [[spoiler:the Bodega Bay crew and the Prisoner [[FeaturelessProtagonist itself]]]]. And that's only the first game and its ExpansionPack. In the ''Tournament'' and ''Championship'' games we get vague backstories for every character, location, weapon and vehicle, barring some exceptions. Needless to say, it's part of the reason of why the Unreal series has a really strong GameMod community[[note]]The other being the hugely customizable and powerful UsefulNotes/{{game engine}}s themselves, way before they fueled complete generations of games[[/note]]. With so many ground to cover, odds are that someone already did a campaign for a question you may have.
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* The ''VideoGame/{{Unreal}}'' series, especially the ''[[VideoGame/UnrealTournament Tournament]]'' games. In the SP games we're given several glimpses of what life on Na Pali used to be before/after the Skaarj invasion, the crash of the ISV-Kran, the landing of the Mercenaries and before the crash of the UMS Vortex Rikers, including [[PlayerCharacter Prisoner 849]]'s vague backstory. We're also left wondering what happened after [[spoiler:Prisoner 849 blows the UMS Bodega Bay]], with either both [[spoiler:the Bodega Bay crew and the Prisoner [[FeaturelessProtagonist itself]]]]. And that's only the first game and its ExpansionPack. In the ''Tournament'' and ''Championship'' games we get vague backstories for every character, location, weapon and vehicle, barring some exceptions. Needless to say, it's part of the reason of why the Unreal series has a really strong GameMod community[[note]]The other being the hugely customizable and powerful UsefulNotes/{{game MediaNotes/{{game engine}}s themselves, way before they fueled complete generations of games[[/note]]. With so many ground to cover, odds are that someone already did a campaign for a question you may have.
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** ''[[VideoGame/MegaManBattleNetwork Battle Network]]'', being an AlternateTimeline to the Classic series where Dr. Light's research on network technology was funded by the government over Dr. Wily's focus on robotics, has quite a bit of this going for it.
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** ''[[VideoGame/MegaManBattleNetwork Battle Network]]'', being an AlternateTimeline to the Classic series where [[PointOfDivergence Dr. Light's research on network technology was funded by the government over Dr. Wily's focus on robotics, robotics]], has quite a bit of this going for it.
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** ''Pokémon'' has generated massive numbers of fanfics over the years, thanks to the sheer cultural presence in the childhoods of an entire generation. The games (especially the early ones) often had sparse characterization and backstories for many characters (including [[HeroicMime the protagonists]]), making {{alternative character interpretation}}s easy for many writers. And we're not even getting into the related media...
** The various "Eeveelutions" are ''fan art'' potential, being far and away artists' most popular subjects. Similar body structures coupled with various elemental themes (and vulpine cuteness) mean they're easy to draw and provide great breadth for creativity.
** The various "Eeveelutions" are ''fan art'' potential, being far and away artists' most popular subjects. Similar body structures coupled with various elemental themes (and vulpine cuteness) mean they're easy to draw and provide great breadth for creativity.
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** ''Pokémon'' has generated massive numbers of fanfics over the years, thanks to the sheer cultural presence in the childhoods of an entire generation. The games (especially the early ones) often had sparse characterization and backstories for many characters (including [[HeroicMime the protagonists]]), making {{alternative character interpretation}}s {{Alternative Character Interpretation}}s easy for many writers. And we're not even getting into the related media...
** The various "Eeveelutions" are [[SailorEarth ''fan art''potential, potential]], being far and away artists' most popular subjects. Similar body structures coupled with various elemental themes (and vulpine cuteness) mean they're easy to draw and provide great breadth for creativity.
** The various "Eeveelutions" are [[SailorEarth ''fan art''
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** ''VideoGame/PokemonScarletAndViolet'' ends with [[spoiler: AI Sada or Turo (depending on the version) deciding to permanently travel to the past/future in order to shut down the TimeMachine for good (long story).]] What kinds of adventures did they go on while they were there? What kinds of other [[spoiler: Paradox]] Pokémon did they find?
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** With [[VideoGame/PokemonXAndY Gen VI]] and [[VideoGame/PokemonSunAndMoon VI]] explicitly introducing the concept of {{Alternate Timeline}}s (and TheMultiverse by proxy) to the series, this opened up a variety of potential plotlines to explore. For example:
*** In the Delta Episode of ''[[VideoGame/PokemonRubyAndSapphire Omega Ruby and Alpha Sapphire]]'', exposition from Zinnia establishes that the PointOfDivergence between the original timeline spawning from ''[[VideoGame/PokemonRedAndBlue Red/Blue]]'' to ''[[VideoGame/PokemonBlack2AndWhite2 Black 2/White 2]]'' and the "Mega Timeline" beginning in ''X/Y'' is [[spoiler:the completion and firing of AZ's ultimate weapon three millennia prior to the events of ''X/Y'']], which led to the discovery of [[SuperMode Mega Evolution]] in the latter. This creates the interesting implication that every mainline title from ''X/Y'' onward probably occurred in the original timeline as well, just without Trainers able to use Mega Evolution.
*** Episode RR of ''[[VideoGame/PokemonUltraSunAndUltraMoon Ultra Sun and Ultra Moon]]'' centers around Team Rainbow Rocket, an incarnation of [[VideoGame/PokemonRedAndBlue Team]] [[VideoGame/PokemonGoldAndSilver Rocket]] formed through a VillainTeamUp of [[LegionOfDoom all previous major antagonists]] ([[MyFriendsAndZoidberg and Faba]]), each Team Leader ([[VideoGame/PokemonRedAndBlue Giovanni]], [[VideoGame/PokemonRubyAndSapphire Archie, Maxie]], [[VideoGame/PokemonDiamondAndPearl Cyrus]], [[VideoGame/PokemonBlackAndWhite Ghestis]], [[VideoGame/PokemonXAndY Lysandre]]) hailing from a world where [[TheBadGuyWins they won]] due to their respective games' protagonists not existing to thwart their plans. Considering said plans range from [[DidntThinkThisThrough ill-thought-out]] [[EcoTerrorist ecoterrorism]] to [[TakeOverTheWorld world domination]] to outright [[RewritingReality remaking]] and/or [[OmnicidalManiac destroying reality]], one can only imagine what the Pokémon world looks like in these versions of history.
** ''VideoGame/PokemonScarletAndViolet'' ends with[[spoiler: AI [[spoiler:AI Sada or Turo (depending on the version) deciding to permanently travel to the past/future in order to shut down the TimeMachine for good (long story).]] story)]]. What kinds of adventures did they go on while they were there? What kinds of other [[spoiler: Paradox]] [[spoiler:Paradox]] Pokémon did they find?
*** In the Delta Episode of ''[[VideoGame/PokemonRubyAndSapphire Omega Ruby and Alpha Sapphire]]'', exposition from Zinnia establishes that the PointOfDivergence between the original timeline spawning from ''[[VideoGame/PokemonRedAndBlue Red/Blue]]'' to ''[[VideoGame/PokemonBlack2AndWhite2 Black 2/White 2]]'' and the "Mega Timeline" beginning in ''X/Y'' is [[spoiler:the completion and firing of AZ's ultimate weapon three millennia prior to the events of ''X/Y'']], which led to the discovery of [[SuperMode Mega Evolution]] in the latter. This creates the interesting implication that every mainline title from ''X/Y'' onward probably occurred in the original timeline as well, just without Trainers able to use Mega Evolution.
*** Episode RR of ''[[VideoGame/PokemonUltraSunAndUltraMoon Ultra Sun and Ultra Moon]]'' centers around Team Rainbow Rocket, an incarnation of [[VideoGame/PokemonRedAndBlue Team]] [[VideoGame/PokemonGoldAndSilver Rocket]] formed through a VillainTeamUp of [[LegionOfDoom all previous major antagonists]] ([[MyFriendsAndZoidberg and Faba]]), each Team Leader ([[VideoGame/PokemonRedAndBlue Giovanni]], [[VideoGame/PokemonRubyAndSapphire Archie, Maxie]], [[VideoGame/PokemonDiamondAndPearl Cyrus]], [[VideoGame/PokemonBlackAndWhite Ghestis]], [[VideoGame/PokemonXAndY Lysandre]]) hailing from a world where [[TheBadGuyWins they won]] due to their respective games' protagonists not existing to thwart their plans. Considering said plans range from [[DidntThinkThisThrough ill-thought-out]] [[EcoTerrorist ecoterrorism]] to [[TakeOverTheWorld world domination]] to outright [[RewritingReality remaking]] and/or [[OmnicidalManiac destroying reality]], one can only imagine what the Pokémon world looks like in these versions of history.
** ''VideoGame/PokemonScarletAndViolet'' ends with
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* ''VideoGame/SoulSeries'': ''VideoGame/SoulcaliburV'' got barely over a year in development. [[http://train2game-news.co.uk/2012/03/26/train2game-news-soulcalibur-v-story-mode-one-fourth-of-planned-size-each-character-was-to-have-own-story/ The length of its Story Mode was drastically shortened due to time constraints,]] with ''numerous'' plot elements mentioned in official bios prior to the game's release being ignored or glossed over left and right and only a [[NoExportForYou Japanese-only artbook]] attempting to [[AllThereInTheManual fill in the blanks]] of exactly ''what'' happened in [[TimeSkip the seventeen-year interim between]] ''SCIV'' and this game. (Heck, there weren't even character-specific Arcade endings to help shed light on things.) For a while, fanfic writers were scrambling to answer the various questions that ''SCV'' couldn't bother to... only for ''VideoGame/SoulcaliburVI'' [[AlternateContinuity to come along]] [[{{Revision}} and]] [[ContinuityReboot wipe the slate clean]]. Even then, that [[spoiler:''VI'' [[ArcWelding frames the events of its predecessor]] as a definite BadFuture (despite ''V'' ending with both soul swords disappearing into Astral Chaos) and features [[MyFutureSelfAndMe the original timeline's Cassandra tipping off her current-day incarnation to this development]]]] is rife with possibility.
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* ''VideoGame/SoulSeries'': ''VideoGame/SoulcaliburV'' got barely over a year in development. [[http://train2game-news.co.uk/2012/03/26/train2game-news-soulcalibur-v-story-mode-one-fourth-of-planned-size-each-character-was-to-have-own-story/ The length of its Story Mode was drastically shortened due to time constraints,]] with ''numerous'' plot elements mentioned in official bios prior to the game's release being ignored or glossed over left and right and only a [[NoExportForYou Japanese-only artbook]] attempting to [[AllThereInTheManual fill in the blanks]] of exactly ''what'' happened in [[TimeSkip the seventeen-year interim between]] ''SCIV'' and this game. (Heck, there weren't even character-specific Arcade endings to help shed light on things.) For a while, fanfic writers were scrambling to answer the various questions that ''SCV'' couldn't bother to... only for ''VideoGame/SoulcaliburVI'' [[AlternateContinuity [[AlternateTimeline to come along]] [[{{Revision}} and]] [[ContinuityReboot wipe the slate clean]]. Even then, that [[spoiler:''VI'' [[ArcWelding frames the events of its predecessor]] as a definite BadFuture (despite ''V'' ending with both soul swords disappearing into Astral Chaos) and features [[MyFutureSelfAndMe the original timeline's Cassandra tipping off her current-day incarnation to this development]]]] is rife with possibility.
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* ''VideoGame/XenobladeChronicles3'' is absolutely ''ripe'' with this, since the game revolves around characters who are AmbiguouslyRelated to characters from the [[VideoGame/XenobladeChronicles1 first]] [[VideoGame/XenobladeChronicles2 two]] games. This leads to all sorts of fan theories trying to guess who is related to who, and what would happen if the characters from 3 met their ancestors from the other games. What kinds of adventures would they go on together?
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* ''VideoGame/XenobladeChronicles3'' is absolutely ''ripe'' ''rife'' with this, since the game revolves around characters who are AmbiguouslyRelated to characters from the [[VideoGame/XenobladeChronicles1 first]] [[VideoGame/XenobladeChronicles2 two]] games. This leads to all sorts of fan theories trying to guess who is related to who, and what would happen if the characters from 3 ''3'' met their ancestors from the other games. What kinds of adventures would they go on together?
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** ''VideoGame/DevilMayCry5'' opened up two big barrels of it. [[spoiler:First, the end of the game has Vergil undergoing a HeelFaceTurn and becoming more of a traditional rival to Dante. As a result, a lot of fics have cropped up that explore this idea, with Vergil adapting to life with the rest of the DMC crew and trying to establish some sort of relationship with his son, Nero. Secondly, after learning that Eva did not, in fact, abandon him and actually died trying to find him and save him, Vergil muses: "That day, if our positions were switched, would our fates be different? Would I have your life, and you mine?" [[ForWantOfANail This has led to quite a bit of fan works exploring that exact premise.]]]]
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** ''VideoGame/DevilMayCry5'' opened up two big barrels of it. [[spoiler:First, the end of the game has Vergil undergoing a HeelFaceTurn and becoming more of a traditional rival to Dante. As a result, a lot of fics have cropped up that explore this idea, with Vergil adapting to life with the rest of the DMC crew and trying to establish some sort of relationship with his son, Nero. Secondly, after learning that Eva did not, in fact, abandon him and actually died trying to find him and save him, Vergil muses: "That day, if our positions were switched, would our fates be different? Would I have your life, and you mine?" [[ForWantOfANail This has led to quite a bit of fan works exploring that exact premise.]]]]]]
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** ''[[VideoGame/MegaManBattleNetwork Battle Network]]'', being an AlternateTimeline to the Classic series where [[ForWantOfANail Dr. Light's research on network technology was funded by the government over Dr. Wily's focus on robotics]], has quite a bit of this going for it.
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** ''[[VideoGame/MegaManBattleNetwork Battle Network]]'', being an AlternateTimeline to the Classic series where [[ForWantOfANail Dr. Light's research on network technology was funded by the government over Dr. Wily's focus on robotics]], robotics, has quite a bit of this going for it.
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* ''VideoGame/TheForceUnleashed'': Rahm Kota leads a private army of soldiers from regional militias, mercenary companies, and defected Separatist [=POW=]s against both the [=CIS=] and the Empire, with the survivors eventually becoming soldiers in the bigger Rebel Alliance. Not a single one of Kota's men is named, but there is a definite impression that some author could write a whole book series about all of the stories that those soldiers doubtlessly have to tell.
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** Aside from that, of course, there are also other endings where fans could continue on, such as in the [[spoiler:"Triple Threat"]] route where during the credits scene, Ellie says that she and Henry are willing to join future missions if Charles calls them.
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** Aside from that, of course, there are also other endings where fans could continue on, such as in the [[spoiler:"Triple Threat"]] route where during the credits scene, Ellie says that she and Henry are willing to join future missions if Charles calls them.them, Henry's and Ellie's roles as the new Toppat members in [[spoiler:"Toppat Recruits"]], as well as the Right Hand Lady in [[spoiler:"Toppat King"]] and Henry's new mission to take down other dangerous criminals in [[spoiler:"Master Bounty Hunter"]].
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** Aside from that, of course, there are also other endings where fans could continue on, such as in [[spolier:"Triple Threat"]] route where during the credits scene, Ellie says that she and Henry are willing to join future missions if Charles calls them.
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** Aside from that, of course, there are also other endings where fans could continue on, such as in [[spolier:"Triple the [[spoiler:"Triple Threat"]] route where during the credits scene, Ellie says that she and Henry are willing to join future missions if Charles calls them.
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* ''VideoGame/HenryStickminSeries'': The [[spoiler:"Toppat Civil Warfare"]] ending of ''Mission'' has an infamous cliffhanger. Despite being one of the most hated routes by the fans, due to similar reasons, some may try to continue it, especially after WordOfGod says there will be no sequels or DLC after the finale.
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* ''VideoGame/HenryStickminSeries'': The ''VideoGame/HenryStickminSeries'':
**What was Ellie Rose's past look like before she was locked up by the Wall?
**The [[spoiler:"Toppat Civil Warfare"]] ending of ''Mission'' has an infamous cliffhanger. Despite being one of the most hated routes by the fans, due to similar reasons, some may try to continue it, especially after WordOfGod says there will be no sequels or DLC after thefinale.finale.
**Aside from that, of course, there are also other endings where fans could continue on, such as in [[spolier:"Triple Threat"]] route where during the credits scene, Ellie says that she and Henry are willing to join future missions if Charles calls them.
**What was Ellie Rose's past look like before she was locked up by the Wall?
**The [[spoiler:"Toppat Civil Warfare"]] ending of ''Mission'' has an infamous cliffhanger. Despite being one of the most hated routes by the fans, due to similar reasons, some may try to continue it, especially after WordOfGod says there will be no sequels or DLC after the
**Aside from that, of course, there are also other endings where fans could continue on, such as in [[spolier:"Triple Threat"]] route where during the credits scene, Ellie says that she and Henry are willing to join future missions if Charles calls them.
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* ''VideoGame/XenobladeChronicles3'' is absolutely ''ripe'' with this, since the game revolves around characters who are AmbiguouslyRelated to characters from the [[VideoGame/XenobladeChronicles1 first]] [[VideoGame/XenobladeChronicles2 two]] games. This leads to all sorts of fan theories trying to guess who is related to who, and what would happen if the characters from 3 met their ancestors from the other games. What kinds of adventures would they go on together?
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** ''VideoGame/PokemonScarletAndViolet'' ends with [[spoiler: AI Sada or Turo (depending on the version) deciding to permanently travel to the past/future in order to shut down the TimeMachine for good (long story).]] What kinds of adventures did they go on while they were there? What kinds of other [[spoiler: Paradox]] Pokémon did they find?
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* ''VideoGame/{{Chrono|Trigger}}'' series:
** Before the release of ''VisualNovel/RadicalDreamers'' and ''VideoGame/ChronoCross'', ''VideoGame/ChronoTrigger'' had many fanfics centering about Magus' search for Schala because Schala's fate is left ambiguous in the end.
** As a sequel to ''Chrono Trigger'', ''VideoGame/ChronoCross'' has a {{Wild Mass Guess|ing}} about [[spoiler:the enigmatic masked magician Guile being Magus searching for Schala (the bonus ending of ''Chrono Trigger DS'' implies Guile being an amnesiac Magus, albeit one from a timeline different from that of the Magus seen in the main storyline)]]. This led to many (though still not very common) novelizations of ''Chrono Cross'' with said {{Wild Mass Guess|ing}}.
** It's worth noting that Guile himself is a FanficMagnet [[spoiler:regardless being Magus or not]], although his fanfics aren't very common.
*** Guile's Japanese name is Alf, which is probably a nod to Janus' cat Alfador. Some fans interpret him as a cat-turned-human.
*** Some fans also prefer having Guile [[spoiler:not being Magus]] by giving him a {{backstory}} which comes from their interpretations. The most common interpretation is Guile being a magician in the past.
*** This is less common, but the interpretations of Guile's comment [[spoiler:(doesn't want the power of darkness because he thinks DarkIsEvil)]] about the Frozen Flame are also prone to be a FanficFuel. This usually comes across as Guile's denial of his identity [[spoiler:as Magus in the past]], but the Frozen Flame is also said to be able to speak not only about the past but also the future.
*** Another less common Fanfic Fuel is about what Guile is hiding behind his DominoMask. Why is the Fortune Teller at Termina shocked when he takes it off?
* In ''VideoGame/{{Cuphead}}'', what the contracts the various bosses made with the Devil granted them (which are only implied in-game) and the events leading up to making those [[DealWithTheDevil deals with the Devil]] has become a fertile source of fan fics.
* The MMO ''Defiance'' and its TV series tie-in has quite an open area for stories set in the world. Including the history detailing between the events of the Votanis Collective arriving at Earth to the end of the show, as well as covering the past events leading up to the Pale Wars, as well as those involved in it and those involved in it. This also opens up for players who continue to play the game to tell stories with their Arkhunter characters and their adventures in the New Frontier. And with the cancellation of the show, it leaves open room for future stories set in the town of Defiance after Nolan and Doc Yewll's departure with the Omec.
* ''VideoGame/DevilMayCry'':
** The ShroudedInMyth nature of [[AscendedDemon Sparda]] is easy fanfiction fodder, particularly as each mainline game adds more and more to his backstory and list of feats without actually showing the particular sequence of events. This only expands further if one takes into account statements made by Creator/HidekiKamiya (either through games he's directed or via Website/{{Twitter}}), particularly the assertation in ''VideoGame/{{Bayonetta}}'' that Sparda's human bride Eva was an Umbra Witch who entered a contract with him -- presumably marking the beginning of [[InterspeciesRomance their courtship]].
** Speaking of ''Bayonetta'', Dante's "Tony Redgrave" alias is, according to Kamiya, taken from Luka's father Antonio as a sign of respect. Coupled with both series featuring an information broker named Enzo, one gets the feeling Kamiya would do a ''DMC''/''Bayonetta'' [[IntercontinuityCrossover crossover]] if he could -- something that fans would very much enjoy considering how popular the idea of Dante and Bayonetta crossing paths ([[UltimateShowdownOfUltimateDestiny and]] [[BackToBackBadasses then]] [[BattleCouple some]]) [[FanonWelding is in fan circles]].
** ''VideoGame/DevilMayCry5'' opened up two big barrels of it. [[spoiler:First, the end of the game has Vergil undergoing a HeelFaceTurn and becoming more of a traditional rival to Dante. As a result, a lot of fics have cropped up that explore this idea, with Vergil adapting to life with the rest of the DMC crew and trying to establish some sort of relationship with his son, Nero. Secondly, after learning that Eva did not, in fact, abandon him and actually died trying to find him and save him, Vergil muses: "That day, if our positions were switched, would our fates be different? Would I have your life, and you mine?" [[ForWantOfANail This has led to quite a bit of fan works exploring that exact premise.]]]]
* ''VideoGame/{{Evolve}}'' takes place on one planet over a relatively short period of time, while additional information revealed creates a much larger universe with the human-monster war lasting years after what we see in the game. Add in the monster's ability to create new breeds opening up the possibility for fan made creations and their extradimensional nature serving as an easy excuse to drop them into any other fictional universe and you have ripe grounds for fanfiction.
* ''VideoGame/{{Fallout}}'':
** ''VideoGame/Fallout4'' takes place ten years after the events of ''VideoGame/Fallout3''. The Eastern Brotherhood of Steel have reverted to a xenophobic and traditionalist ideology, Owyn Lyons has passed away [[spoiler:and so has his daughter Sarah]] and been replaced by [[AscendedExtra Arthur]] [[UsedToBeASweetKid Maxson]], and we have only a few concrete details into the state of the Capital Wasteland except the fact that the Brotherhood have established ''de facto'' rule of the region as feudalistic overlords. This has led to some downright ''juicy'' speculation into events just after the ending of ''3'', the fate or whereabouts of the Lone Wanderer and of other characters, and the current state of affairs in the Capital Wasteland.
** Considering how, as of ''Fallout 4'', all of the canon games (aside from ''Tactics''... [[BroadStrokes kinda]]) have been based on only the West and East Coasts of the former United States -- ''Fallout 1'' takes place in southern California, ''2'' takes place in northern California, ''3'' takes place around Washington D.C. (along with Pittsburgh and Point Lookout National Park), ''New Vegas'' takes place around Las Vegas and Zion National Park, and ''4'' is located around Boston (along with western Massachusetts and Bar Harbor, Maine). Many fans love to come up with theories on what's happened to the rest of the continent. Only a few allusions have been made by the games to what societies exist outside of these two regions (i.e., Ronto, the Erie Stretch, Great Lanta, Crater Banks, and the countless tribes not assimilated by Caesar's Legion or the NCR), so it's mostly been left to fans to decide what ''other'' societies have appeared [[AfterTheEnd in the intervening centuries]].
* Many ''VideoGame/GoldenSun'' fanfics focus on what Isaac's party was up to during the first two thirds of ''[[VideoGame/GoldenSunTheLostAge The Lost Age]]'', before they joined forces with Felix's group.
* ''Franchise/{{Halo}}'':
** All of those Spartans that didn't get a story in either games and or the ExpandedUniverse. Heck, even the ones who are featured in canon are this, since we still only get a tiny glimpse of their adventures.
** The post-war galaxy is this too, since there are hundreds of different factions vying for power in the vacuum caused by the Covenant's collapse.
* In ''VideoGame/HarvestMoonAnimalParade'' there's one marriage candidate called the Witch Princess. She sometimes mentions that she doesn't seem to get along with the Harvest King. If you're married to her, you can hear her say, "If you were to be gone from this world... I wouldn't know what to do. It's frightening. So please don't leave my side." Also, when getting her wish for the Purple Bell, she'll say that she wants a potion or something that will pull the truth out of someone. Has she been betrayed before? Lied to? What if the Harvest King is related to all this?
* ''VideoGame/HenryStickminSeries'': The [[spoiler:"Toppat Civil Warfare"]] ending of ''Mission'' has an infamous cliffhanger. Despite being one of the most hated routes by the fans, due to similar reasons, some may try to continue it, especially after WordOfGod says there will be no sequels or DLC after the finale.
* ''VideoGame/KanColle'', due to the premise being "turn battleships of the Second World War into girls, and be their Admiral" has a '''huge''' cast, is rife with [[HistoricalInJoke Historical In-Jokes]], offers a wide area where stories can take place (most of the Atlantic and Pacific Ocean, as well as coastal bases and cities just about anywhere) and runs the gamut from very comedic to very serious. This allows fan creations of Admirals in all kinds of variations (male or female, old or young, even "Abyssal" Admirals for the enemy faction might exist) as well as battleships without a canon girl equivalent, and fan stories can be almost anything.
* ''Franchise/KingdomHearts'' has a massive MythArc that still contains tons of blank spaces, like the epic [[GreatOffscreenWar Keyblade Wars]], and the mysterious period before the fracturing of the Multiverse. It's also a rare official crossover between dozens of Franchise/{{Disney|AnimatedCanon}} and ''Franchise/FinalFantasy'' works, which leaves plenty of room for exploring how the many established characters fit into the original lore of ''Kingdom Hearts''. [[WesternAnimation/MickeyMouse King Mickey]]'s backstory is particularly juicy: how exactly did he go from [[WesternAnimation/SteamboatWillie a humble steamboat pilot]] to [[WesternAnimation/{{Fantasia}} an apprentice sorcerer]] to a ''[[TheGoodKing king]]'', and how did he meet his chief lieutenants [[WesternAnimation/DonaldDuck Donald]] and WesternAnimation/{{Goofy}}?
* ''Franchise/{{Kirby}}'':
** Kirby's PowerCopying ability technically gives him an unlimited array of potential powers. And with Kirby having abilities that range from martial arts and electricity to ringing bells and parasols, it's quite fun to imagine potential powers for the little guy. And what makes it even more fun is the possibility of them [[AscendedFanon becoming actual powers in an official Kirby game]].
** What would happen if other characters found [[VideoGame/KirbySuperStar NOVA]] [[spoiler:or [[VideoGame/KirbyPlanetRobobot another wish-granting machine]]]], and what wishes would they make?
** What are the [[VideoGame/KirbyAndTheAmazingMirror Mirror World]] versions of characters we haven't seen yet?
** If the [[VideoGame/KirbyPlanetRobobot Robobot Armor]] can take the ability of its wearer, what would happen if someone other than Kirby used it?
* ''VideoGame/TheLegendOfSpyroDawnOfTheDragon'': Very little is explained about Malefor's backstory. Any fanfiction that's not Spyro/Cynder shipping is probably this. His "death" in the final game was also vague, leading to many fanfiction and fan comics.
* ''Franchise/TheLegendOfZelda'':
** Several fics based on ''VideoGame/TheLegendOfZeldaTwilightPrincess'' focus on [[spoiler:what happened to Midna after she returned to Twilight, and if she ever found a way to reunite with Link]].
** For ''VideoGame/TheLegendOfZeldaOcarinaOfTime'', what exactly happened in the seven years that Link was asleep? There's been fan interest in a game where you play as Zelda/Sheik during that time period, and [[https://www.nintendolife.com/news/2021/07/retros_cancelled_zelda_game_starring_sheik_resurfaces_in_nintendo_gigaleak Nintendo had actually planned to make such a spin-off]], but it was scrapped before it saw the light of day.
** Also regarding ''Ocarina of Time'' as well as its sequel ''[[VideoGame/TheLegendOfZeldaMajorasMask Majora's Mask]]'', what did the Hero of Time do upon leaving Termina? ''Literature/HyruleHistoria'' confirms that the Hero's Shade, the ghost who is ''Twilight Princess'' Link's ancestor, is the Hero of Time, so many fanfics dealing with this subject tend to feature how he lost his eye and whom he started a family with (the ranch girl Malon being the most common candidate).
** All the alternate timelines and universes add more of this too. What happened in Termina before and after Link's adventure in ''[[VideoGame/TheLegendOfZeldaMajorasMask Majora's Mask]]'' (and what was Majora's own backstory)? The wars in the past that occurred before ''[[VideoGame/TheLegendOfZeldaOcarinaOfTime Ocarina of Time]]'', ''[[VideoGame/TheLegendOfZeldaALinkToThePast A Link to the Past]]'', ''[[VideoGame/TheLegendOfZeldaSkywardSword Skyward Sword]]'' and various other titles, of which the BigBad is usually one of the last survivors? What happened to so and so character introduced in one game that's never been heard of since? Each of these questions usually starts a lot of ''Zelda'' fan fic...
* ''Franchise/MassEffect'' fans have the two years in which [[spoiler:Shepard is "dead"]] to explore what happened to their old crew, as we only really find out what happened to Garrus and Liara, and even they don't get much detail. The Refusal Ending also counts, since it never shows you what the new species were, how they discovered Liara's message, how they developed as a society and their ultimate defeat of the Reapers.
* While the MMO game ''VideoGame/TheMatrixOnline'' might have been disappointingly short-lived, it did manage to open up a very open-ended continuation of the ''Matrix'' film series, where factions of human warriors loyal to Zion, the Machines and the Merovingian wage a secret war for control of the Matrix in the wake of the Machines' truce with humanity. Many fanfic writers have taken to using this setting as a starting point for {{Continuation Fic}}s exploring the future of [[Franchise/TheMatrix the]] ''[[Franchise/TheMatrix Matrix]]'' [[Franchise/TheMatrix universe]].
* ''Franchise/MegaMan'':
** ''VideoGame/MegaManZero'': [[spoiler:The BigBad is immortal, and Zero's death is left ambiguous.]] Did something else happen to these two after ''[[VideoGame/MegaManZero4 Zero 4]]'' (and before ''VideoGame/MegaManZX'')?
** And for that matter, what about the events that connect the [[VideoGame/MegaManClassic original Mega Man]] to ''[[VideoGame/MegaManX X]]'', and ''X'' to ''Zero''? For the latter, there has yet to be a game covering [[GreatOffscreenWar the Elf Wars]], which is largely mentioned in passing and only briefly showcased in [[AudioAdaptation drama CDs]].
** The First Annual Robot Tournament mentioned in ''VideoGame/MegaMan6'''s opening offers considerable potential for story expansion, both regarding the setup of the tournament itself and the number and diversity of the contestants. How many Robot Masters actually entered the tournament? What were their weapons and weaknesses? Did Cossack enter a robot into the tournament? Were any of the contestants Robot Masters formally introduced in later games? [[note]]The Japanese version sadly eliminates a lot of these possibilities as the First World Robot Tournament was ''beginning'' when Mr. X hijacked the eight contestants. Apparently they were the only eight in the Japanese version. [[TheyWastedAPerfectlyGoodPlot Talk about wasting a perfectly good plot.]][[/note]]
** ''[[VideoGame/MegaManBattleNetwork Battle Network]]'', being an AlternateTimeline to the Classic series where [[ForWantOfANail Dr. Light's research on network technology was funded by the government over Dr. Wily's focus on robotics]], has quite a bit of this going for it.
*** The most common application of the timeline split is [[SailorEarth introducing]] [[AlternateSelf cross-series counterparts]] of characters who'd logically exist in the other course of history. A frequent candidate for [[OCStandIn this]] is [[VideoGame/MegaManBattleNetwork4RedSunAndBlueMoon Dr. Regal]], as [[VideoGame/MegaManBattleNetwork5TeamColonelAndTeamProtoMan the fifth game]] establishes him to be [[spoiler:Dr. Wily's son]]. Surely the [[spoiler:BigBad's direct blood relation]] would be hanging around in the Classic series as well, right? [[spoiler:And considering Regal a) is CardCarryingVillain so repulsive that [[EvenEvilHasStandards his old man]] subjects him to HeelFaceBrainwashing to turn Regal into a productive member of society and b) was driven to [[HumansAreBastards his brand of nihilistc villainy]] after [[BrokenPedestal becoming dillusioned with both Wily and the society that rejected his father]], a number of fans see it fit to hit a Classic Dr. Regal with AdaptationalHeroism instead of portraying him as an OverlordJr or otherwise independent villain.]]
*** Despite some changes [[NonSequiturCausality that are harder to explain]], like [[AdaptationalNationality Dr. Light's nationality changing from American to Electopian]] ([[FantasyCounterpartCulture read: Japanese]]) or the extraterrestrial Duo now being [[VideoGame/MegaManBattleNetwork4RedSunAndBlueMoon an advanced NetNavi who judges intelligent life and destroys the worlds of those deemed wicked]] as opposed to [[VideoGame/MegaMan8 a heroic robot belonging to an intergalactic peacekeeping force]], the fact that [[InSpiteOfANail Wily is still a roboticist]] suggests a lot of backstory details may still be intact between continuities. An interesting (if not overlooked) tidbit comes in ''[=BN5=]'', where it's revealed that the ''BN'' versions of Light and Wily collaborated in their youth on [=SoulNet=] -- [[https://megaman.fandom.com/wiki/SoulNet a concept]] that meshed together their respective fields of study and sounds not too far removed from {{Cyberspace}} as it appears in the ''Zero'' series. One has to wonder if their Classic selves had a similar joint endeavor.
* ''VideoGame/MetalGearSolid'':
** The fandom is particularly fond of writing fics about Liquid's backstory (usually set during his time in the Middle East) or the day The Boss killed The Sorrow. In fact, these two plots are so popular in ''MGS'' fan fiction that almost every male ''MGS'' fan writer has taken on the former, and almost every female ''MGS'' fan writer has taken on the latter.
** Early on in ''VideoGame/{{Metal Gear Solid 2|SonsOfLiberty}}'', Otacon claims that almost every major nation, corporation and political group on Earth ends up developing their own version of Metal Gear in the wake of [[VideoGame/MetalGearSolid Ocelot releasing the weapon's plans]] -- which means that there are likely ''hundreds'' (if not more) models of Metal Gear that we never actually see in the series proper.
* ''VideoGame/Mother3'' leaves most of the details about the TimeSkip after ''VideoGame/{{EarthBound|1994}}'' (''Mother 2'' in Japan) deliberately clouded in mystery and enigma. As such, there are numerous fan works exploring [[spoiler:the catastrophe that completely destroyed the world of ''[=EarthBound=]'']], the people of Tazmily's [[spoiler:journey to the Nowhere Islands after their world's destruction]], and [[spoiler:Porky Minch]]'s [[StartOfDarkness descent into complete evil]], not to mention the full story of [[spoiler:the long-vanished race of people who built Osohe Castle]].
* Let's see, ''VideoGame/{{Neptunia}}''... [[AlternateUniverseFic Multiple dimensions?]] Check. [[ADayInTheLimelight Fleshed out]] [[AlternativeCharacterInterpretation characters]]... Check. Almost no history of its world. Check. [[SelfInsertFic An absolutely moe]], [[MostWritersAreMale all-female cast]]? [[HomoeroticSubtext Heavily implied]] {{yuri|Genre}} [[GirlOnGirlIsHot among said cast]]?! Check-a-doodle-doo.
* ''VideoGame/{{Overwatch}}'' has ''two'' backstories: one of a massive RobotWar that spawned the titular organization, and another of the exploits and controversies of said organization in the years following the war's conclusion. With much of the details being fairly hazy, both with the plot and with the characters' individual backstories, fans have planted a record number of EpilepticTrees despite the game being relatively young.
* ''Franchise/{{Pokemon}}'':
** ''Pokémon'' has generated massive numbers of fanfics over the years, thanks to the sheer cultural presence in the childhoods of an entire generation. The games (especially the early ones) often had sparse characterization and backstories for many characters (including [[HeroicMime the protagonists]]), making {{alternative character interpretation}}s easy for many writers. And we're not even getting into the related media...
** The various "Eeveelutions" are ''fan art'' potential, being far and away artists' most popular subjects. Similar body structures coupled with various elemental themes (and vulpine cuteness) mean they're easy to draw and provide great breadth for creativity.
** Similar to the Eeveelutions potential is the "Regional Forms" introduced in [[VideoGame/PokemonSunAndMoon Generation VII]]. The idea of wildly different regional variants of earlier Pokémon threw open the floodgates to reimaginations of familiar favorites.
* Because Chell in ''VideoGame/{{Portal}}'' has almost no backstory, there is a ''lot'' of room for imagination. Wheatley and [=GLaDOS=]/[[spoiler:Caroline's]] pasts are also very vague, and Chell's future is unknown, as all we ever saw was a cornfield. Since ''Portal'' also ties into ''VideoGame/HalfLife'', there is also potential for crossover stories involved a race between the Combine and Human Resistance to get to whatever Aperture Science tech is on board the Borealis.
* ''VideoGame/PuyoPuyo'':
** Characters besides Klug getting possessed by the demon is a fairly popular subject for fan art. [[https://twitter.com/MZKN002/status/743638925965565952 Possessed Sig]] is a obvious example since [[spoiler:it's implied his miscolored left arm and eye are connected to part of the demon]], but there are plenty others out there, such as [[https://www.pixiv.net/member_illust.php?mode=medium&illust_id=43127812 Possessed Witch]] or [[https://www.deviantart.com/fedoramoron/art/Strange-Tee-796629955 Possessed Tee]].
** Some people enjoy coming up with Mini and Mega forms for characters not present in ''Puyo Puyo 7'', such as Lidelle, Accord or Witch.
** How and why Yu and Rei died? There are hints this was a tragic affair, but it's never further elaborated in the games proper.
* ''VideoGame/{{Pyre}}'': In a certain ending where [[spoiler:Oralech survives and is left on the same side as Volfred, they will rebuild their relationship, but the details of their conversation is left a mystery, leaving any space for romantic or platonic interpretation to their previous relationship]]. The epilogue specifically mentions that they were "seldom seen traveling separate" afterwards.
* There's a three-year gap in the ''Franchise/ResidentEvil'' timeline, between the end of ''[[VideoGame/ResidentEvilCodeVeronica Code: Veronica]]'' and the "Umbrella's End" stage in ''[[VideoGame/ResidentEvilTheUmbrellaChronicles The Umbrella Chronicles]]'', that has never been explored to any serious extent. We've been told here and there that the cast was running around the world fighting viruses, arresting evil scientists, and having adventures, but aside from Leon's adventure in South America in ''[[VideoGame/ResidentEvilTheDarksideChronicles The Darkside Chronicles]]'', it's never really been discussed.
* ''Franchise/SilentHill'', being a premiere MindScrew series told exclusively from the view of the player character ([[spoiler:with the possible exception of ''[[VideoGame/SilentHillShatteredMemories Shattered Memories]]'']]), contains a wealth of information for fans to explore, especially concerning the nature of the eponymous GeniusLoci and the cult that worships it.
* As Creator/SanzaruGames refused to continue the franchise, ''VideoGame/SlyCooperThievesInTime'' had quite a lot of {{Fix Fic}}s that [[spoiler:either justified Penelope's poorly written FaceHeelTurn or undid the DownerEnding, with Bentley and Murray finding Sly in Ancient Egypt and bringing him home, or even having Sly turn up in ''modern day'' Egypt instead]].
* ''VideoGame/SoulSeries'': ''VideoGame/SoulcaliburV'' got barely over a year in development. [[http://train2game-news.co.uk/2012/03/26/train2game-news-soulcalibur-v-story-mode-one-fourth-of-planned-size-each-character-was-to-have-own-story/ The length of its Story Mode was drastically shortened due to time constraints,]] with ''numerous'' plot elements mentioned in official bios prior to the game's release being ignored or glossed over left and right and only a [[NoExportForYou Japanese-only artbook]] attempting to [[AllThereInTheManual fill in the blanks]] of exactly ''what'' happened in [[TimeSkip the seventeen-year interim between]] ''SCIV'' and this game. (Heck, there weren't even character-specific Arcade endings to help shed light on things.) For a while, fanfic writers were scrambling to answer the various questions that ''SCV'' couldn't bother to... only for ''VideoGame/SoulcaliburVI'' [[AlternateContinuity to come along]] [[{{Revision}} and]] [[ContinuityReboot wipe the slate clean]]. Even then, that [[spoiler:''VI'' [[ArcWelding frames the events of its predecessor]] as a definite BadFuture (despite ''V'' ending with both soul swords disappearing into Astral Chaos) and features [[MyFutureSelfAndMe the original timeline's Cassandra tipping off her current-day incarnation to this development]]]] is rife with possibility.
* ''Franchise/SuperMarioBros'': If Princess Peach isn't Bowser Jr.'s mother, then who is?
* As ''VideoGame/SuperSmashBros'' [[NoPlotNoProblem doesn't really do plot]] (barring [[VideoGame/SuperSmashBrosBrawl The Subspace Emissary]] and [[VideoGame/SuperSmashBrosUltimate World of Light]]) it also lacks any sort of real lore. As such, quite a few fans have made their own expansions to the ''Smash Bros.'' world, especially in regards to the OriginalGeneration.
* ''VideoGame/TalesSeries'':
** ''VideoGame/TalesOfSymphonia'' has a two-year gap between the first and [[VideoGame/TalesOfSymphoniaDawnOfTheNewWorld second]] games in the series for fanfic writers to speculate on. Most of the party members also have at least a few gaps to fill in... not to mention the oft-mentioned but barely seen Kharlan War era, four thousand years ago, which has spawned its own subgenre within the fandom.
** Similarly, there's plenty in the post-timeskip epilogue to ''VideoGame/TalesOfTheAbyss'', except that it's more like Essay Fuel since people are just trying to explain [[GainaxEnding what the hell actually happened]].
* ''Franchise/TouhouProject'':
** The lack of backstory for many of the characters or the events of the PC-98 games are prime fanfic (and fan comic and fan video) fuel.
** Yukari's ability to manipulate boundaries is pretty much made for this. What, exactly, constitutes a "boundary"? [[SemanticSuperpower Pretty much whatever the hell she feels like]], allowing stories about going to the moon, de-aging people, hitting people with trains, bringing people from outside to Gensokyo...
* ''VideoGame/{{Undertale}}'' has three burgeoning types of fanfic, coming less than a month after release:
** The Fallen Human's backstory. [[spoiler:Both Chara AND Frisk's.]] The backstory we have is anywhere between vague to nonexistent, so it's fertile ground for fan expansion.
** What happens after the [[spoiler:True Pacifist]] ending. While what we see is incredibly upbeat and happy, that doesn't stop people from exploring just how both human and monster society deals with such a sudden change in dynamic.
** {{Fix Fic}}s regarding the ultimate fate of Flowey[[spoiler:/Asriel]]. Even the best ending seems to give him the shaft, and more than a few people can't help but feel obligated to try and help give even him a happy ending.
** Along with those, what is the fate of the monsters when they [[spoiler:reach the human world]], and how did they get to where they are? There are some things that happen that couldn't have happened within a short time after the game ended ([[spoiler:Toriel teaching at a school being the most obvious]]).
** Who are the [[spoiler:six human souls]], and what is their backstory? Very little is actually given about them in terms of information.
** What if [[spoiler:the skeletons]] switched roles is a popular story. Specifically, what if [[spoiler:you killed Sans first? Would Papyrus become a badass and be the one to give you a hard time]]?
*** While we're at it, [[spoiler:how did Sans get his abilities in the first place? And when (and how) did he become aware of the reset situation]]?
** Who the hell IS [[spoiler:Dr. Gaster]], and what happened to him to cause him (and those who knew him real well) to [[spoiler:not exist anymore]]?
* The ''VideoGame/{{Unreal}}'' series, especially the ''[[VideoGame/UnrealTournament Tournament]]'' games. In the SP games we're given several glimpses of what life on Na Pali used to be before/after the Skaarj invasion, the crash of the ISV-Kran, the landing of the Mercenaries and before the crash of the UMS Vortex Rikers, including [[PlayerCharacter Prisoner 849]]'s vague backstory. We're also left wondering what happened after [[spoiler:Prisoner 849 blows the UMS Bodega Bay]], with either both [[spoiler:the Bodega Bay crew and the Prisoner [[FeaturelessProtagonist itself]]]]. And that's only the first game and its ExpansionPack. In the ''Tournament'' and ''Championship'' games we get vague backstories for every character, location, weapon and vehicle, barring some exceptions. Needless to say, it's part of the reason of why the Unreal series has a really strong GameMod community[[note]]The other being the hugely customizable and powerful UsefulNotes/{{game engine}}s themselves, way before they fueled complete generations of games[[/note]]. With so many ground to cover, odds are that someone already did a campaign for a question you may have.
* How did various yokai in ''VideoGame/YokaiWatch'' become yokai?
* ''VideoGame/YumeNikki'' has little to no context and background information for many areas and characters, including Madotsuki herself, leaves the game's canon very open to fan interpretation and expansion.
** Before the release of ''VisualNovel/RadicalDreamers'' and ''VideoGame/ChronoCross'', ''VideoGame/ChronoTrigger'' had many fanfics centering about Magus' search for Schala because Schala's fate is left ambiguous in the end.
** As a sequel to ''Chrono Trigger'', ''VideoGame/ChronoCross'' has a {{Wild Mass Guess|ing}} about [[spoiler:the enigmatic masked magician Guile being Magus searching for Schala (the bonus ending of ''Chrono Trigger DS'' implies Guile being an amnesiac Magus, albeit one from a timeline different from that of the Magus seen in the main storyline)]]. This led to many (though still not very common) novelizations of ''Chrono Cross'' with said {{Wild Mass Guess|ing}}.
** It's worth noting that Guile himself is a FanficMagnet [[spoiler:regardless being Magus or not]], although his fanfics aren't very common.
*** Guile's Japanese name is Alf, which is probably a nod to Janus' cat Alfador. Some fans interpret him as a cat-turned-human.
*** Some fans also prefer having Guile [[spoiler:not being Magus]] by giving him a {{backstory}} which comes from their interpretations. The most common interpretation is Guile being a magician in the past.
*** This is less common, but the interpretations of Guile's comment [[spoiler:(doesn't want the power of darkness because he thinks DarkIsEvil)]] about the Frozen Flame are also prone to be a FanficFuel. This usually comes across as Guile's denial of his identity [[spoiler:as Magus in the past]], but the Frozen Flame is also said to be able to speak not only about the past but also the future.
*** Another less common Fanfic Fuel is about what Guile is hiding behind his DominoMask. Why is the Fortune Teller at Termina shocked when he takes it off?
* In ''VideoGame/{{Cuphead}}'', what the contracts the various bosses made with the Devil granted them (which are only implied in-game) and the events leading up to making those [[DealWithTheDevil deals with the Devil]] has become a fertile source of fan fics.
* The MMO ''Defiance'' and its TV series tie-in has quite an open area for stories set in the world. Including the history detailing between the events of the Votanis Collective arriving at Earth to the end of the show, as well as covering the past events leading up to the Pale Wars, as well as those involved in it and those involved in it. This also opens up for players who continue to play the game to tell stories with their Arkhunter characters and their adventures in the New Frontier. And with the cancellation of the show, it leaves open room for future stories set in the town of Defiance after Nolan and Doc Yewll's departure with the Omec.
* ''VideoGame/DevilMayCry'':
** The ShroudedInMyth nature of [[AscendedDemon Sparda]] is easy fanfiction fodder, particularly as each mainline game adds more and more to his backstory and list of feats without actually showing the particular sequence of events. This only expands further if one takes into account statements made by Creator/HidekiKamiya (either through games he's directed or via Website/{{Twitter}}), particularly the assertation in ''VideoGame/{{Bayonetta}}'' that Sparda's human bride Eva was an Umbra Witch who entered a contract with him -- presumably marking the beginning of [[InterspeciesRomance their courtship]].
** Speaking of ''Bayonetta'', Dante's "Tony Redgrave" alias is, according to Kamiya, taken from Luka's father Antonio as a sign of respect. Coupled with both series featuring an information broker named Enzo, one gets the feeling Kamiya would do a ''DMC''/''Bayonetta'' [[IntercontinuityCrossover crossover]] if he could -- something that fans would very much enjoy considering how popular the idea of Dante and Bayonetta crossing paths ([[UltimateShowdownOfUltimateDestiny and]] [[BackToBackBadasses then]] [[BattleCouple some]]) [[FanonWelding is in fan circles]].
** ''VideoGame/DevilMayCry5'' opened up two big barrels of it. [[spoiler:First, the end of the game has Vergil undergoing a HeelFaceTurn and becoming more of a traditional rival to Dante. As a result, a lot of fics have cropped up that explore this idea, with Vergil adapting to life with the rest of the DMC crew and trying to establish some sort of relationship with his son, Nero. Secondly, after learning that Eva did not, in fact, abandon him and actually died trying to find him and save him, Vergil muses: "That day, if our positions were switched, would our fates be different? Would I have your life, and you mine?" [[ForWantOfANail This has led to quite a bit of fan works exploring that exact premise.]]]]
* ''VideoGame/{{Evolve}}'' takes place on one planet over a relatively short period of time, while additional information revealed creates a much larger universe with the human-monster war lasting years after what we see in the game. Add in the monster's ability to create new breeds opening up the possibility for fan made creations and their extradimensional nature serving as an easy excuse to drop them into any other fictional universe and you have ripe grounds for fanfiction.
* ''VideoGame/{{Fallout}}'':
** ''VideoGame/Fallout4'' takes place ten years after the events of ''VideoGame/Fallout3''. The Eastern Brotherhood of Steel have reverted to a xenophobic and traditionalist ideology, Owyn Lyons has passed away [[spoiler:and so has his daughter Sarah]] and been replaced by [[AscendedExtra Arthur]] [[UsedToBeASweetKid Maxson]], and we have only a few concrete details into the state of the Capital Wasteland except the fact that the Brotherhood have established ''de facto'' rule of the region as feudalistic overlords. This has led to some downright ''juicy'' speculation into events just after the ending of ''3'', the fate or whereabouts of the Lone Wanderer and of other characters, and the current state of affairs in the Capital Wasteland.
** Considering how, as of ''Fallout 4'', all of the canon games (aside from ''Tactics''... [[BroadStrokes kinda]]) have been based on only the West and East Coasts of the former United States -- ''Fallout 1'' takes place in southern California, ''2'' takes place in northern California, ''3'' takes place around Washington D.C. (along with Pittsburgh and Point Lookout National Park), ''New Vegas'' takes place around Las Vegas and Zion National Park, and ''4'' is located around Boston (along with western Massachusetts and Bar Harbor, Maine). Many fans love to come up with theories on what's happened to the rest of the continent. Only a few allusions have been made by the games to what societies exist outside of these two regions (i.e., Ronto, the Erie Stretch, Great Lanta, Crater Banks, and the countless tribes not assimilated by Caesar's Legion or the NCR), so it's mostly been left to fans to decide what ''other'' societies have appeared [[AfterTheEnd in the intervening centuries]].
* Many ''VideoGame/GoldenSun'' fanfics focus on what Isaac's party was up to during the first two thirds of ''[[VideoGame/GoldenSunTheLostAge The Lost Age]]'', before they joined forces with Felix's group.
* ''Franchise/{{Halo}}'':
** All of those Spartans that didn't get a story in either games and or the ExpandedUniverse. Heck, even the ones who are featured in canon are this, since we still only get a tiny glimpse of their adventures.
** The post-war galaxy is this too, since there are hundreds of different factions vying for power in the vacuum caused by the Covenant's collapse.
* In ''VideoGame/HarvestMoonAnimalParade'' there's one marriage candidate called the Witch Princess. She sometimes mentions that she doesn't seem to get along with the Harvest King. If you're married to her, you can hear her say, "If you were to be gone from this world... I wouldn't know what to do. It's frightening. So please don't leave my side." Also, when getting her wish for the Purple Bell, she'll say that she wants a potion or something that will pull the truth out of someone. Has she been betrayed before? Lied to? What if the Harvest King is related to all this?
* ''VideoGame/HenryStickminSeries'': The [[spoiler:"Toppat Civil Warfare"]] ending of ''Mission'' has an infamous cliffhanger. Despite being one of the most hated routes by the fans, due to similar reasons, some may try to continue it, especially after WordOfGod says there will be no sequels or DLC after the finale.
* ''VideoGame/KanColle'', due to the premise being "turn battleships of the Second World War into girls, and be their Admiral" has a '''huge''' cast, is rife with [[HistoricalInJoke Historical In-Jokes]], offers a wide area where stories can take place (most of the Atlantic and Pacific Ocean, as well as coastal bases and cities just about anywhere) and runs the gamut from very comedic to very serious. This allows fan creations of Admirals in all kinds of variations (male or female, old or young, even "Abyssal" Admirals for the enemy faction might exist) as well as battleships without a canon girl equivalent, and fan stories can be almost anything.
* ''Franchise/KingdomHearts'' has a massive MythArc that still contains tons of blank spaces, like the epic [[GreatOffscreenWar Keyblade Wars]], and the mysterious period before the fracturing of the Multiverse. It's also a rare official crossover between dozens of Franchise/{{Disney|AnimatedCanon}} and ''Franchise/FinalFantasy'' works, which leaves plenty of room for exploring how the many established characters fit into the original lore of ''Kingdom Hearts''. [[WesternAnimation/MickeyMouse King Mickey]]'s backstory is particularly juicy: how exactly did he go from [[WesternAnimation/SteamboatWillie a humble steamboat pilot]] to [[WesternAnimation/{{Fantasia}} an apprentice sorcerer]] to a ''[[TheGoodKing king]]'', and how did he meet his chief lieutenants [[WesternAnimation/DonaldDuck Donald]] and WesternAnimation/{{Goofy}}?
* ''Franchise/{{Kirby}}'':
** Kirby's PowerCopying ability technically gives him an unlimited array of potential powers. And with Kirby having abilities that range from martial arts and electricity to ringing bells and parasols, it's quite fun to imagine potential powers for the little guy. And what makes it even more fun is the possibility of them [[AscendedFanon becoming actual powers in an official Kirby game]].
** What would happen if other characters found [[VideoGame/KirbySuperStar NOVA]] [[spoiler:or [[VideoGame/KirbyPlanetRobobot another wish-granting machine]]]], and what wishes would they make?
** What are the [[VideoGame/KirbyAndTheAmazingMirror Mirror World]] versions of characters we haven't seen yet?
** If the [[VideoGame/KirbyPlanetRobobot Robobot Armor]] can take the ability of its wearer, what would happen if someone other than Kirby used it?
* ''VideoGame/TheLegendOfSpyroDawnOfTheDragon'': Very little is explained about Malefor's backstory. Any fanfiction that's not Spyro/Cynder shipping is probably this. His "death" in the final game was also vague, leading to many fanfiction and fan comics.
* ''Franchise/TheLegendOfZelda'':
** Several fics based on ''VideoGame/TheLegendOfZeldaTwilightPrincess'' focus on [[spoiler:what happened to Midna after she returned to Twilight, and if she ever found a way to reunite with Link]].
** For ''VideoGame/TheLegendOfZeldaOcarinaOfTime'', what exactly happened in the seven years that Link was asleep? There's been fan interest in a game where you play as Zelda/Sheik during that time period, and [[https://www.nintendolife.com/news/2021/07/retros_cancelled_zelda_game_starring_sheik_resurfaces_in_nintendo_gigaleak Nintendo had actually planned to make such a spin-off]], but it was scrapped before it saw the light of day.
** Also regarding ''Ocarina of Time'' as well as its sequel ''[[VideoGame/TheLegendOfZeldaMajorasMask Majora's Mask]]'', what did the Hero of Time do upon leaving Termina? ''Literature/HyruleHistoria'' confirms that the Hero's Shade, the ghost who is ''Twilight Princess'' Link's ancestor, is the Hero of Time, so many fanfics dealing with this subject tend to feature how he lost his eye and whom he started a family with (the ranch girl Malon being the most common candidate).
** All the alternate timelines and universes add more of this too. What happened in Termina before and after Link's adventure in ''[[VideoGame/TheLegendOfZeldaMajorasMask Majora's Mask]]'' (and what was Majora's own backstory)? The wars in the past that occurred before ''[[VideoGame/TheLegendOfZeldaOcarinaOfTime Ocarina of Time]]'', ''[[VideoGame/TheLegendOfZeldaALinkToThePast A Link to the Past]]'', ''[[VideoGame/TheLegendOfZeldaSkywardSword Skyward Sword]]'' and various other titles, of which the BigBad is usually one of the last survivors? What happened to so and so character introduced in one game that's never been heard of since? Each of these questions usually starts a lot of ''Zelda'' fan fic...
* ''Franchise/MassEffect'' fans have the two years in which [[spoiler:Shepard is "dead"]] to explore what happened to their old crew, as we only really find out what happened to Garrus and Liara, and even they don't get much detail. The Refusal Ending also counts, since it never shows you what the new species were, how they discovered Liara's message, how they developed as a society and their ultimate defeat of the Reapers.
* While the MMO game ''VideoGame/TheMatrixOnline'' might have been disappointingly short-lived, it did manage to open up a very open-ended continuation of the ''Matrix'' film series, where factions of human warriors loyal to Zion, the Machines and the Merovingian wage a secret war for control of the Matrix in the wake of the Machines' truce with humanity. Many fanfic writers have taken to using this setting as a starting point for {{Continuation Fic}}s exploring the future of [[Franchise/TheMatrix the]] ''[[Franchise/TheMatrix Matrix]]'' [[Franchise/TheMatrix universe]].
* ''Franchise/MegaMan'':
** ''VideoGame/MegaManZero'': [[spoiler:The BigBad is immortal, and Zero's death is left ambiguous.]] Did something else happen to these two after ''[[VideoGame/MegaManZero4 Zero 4]]'' (and before ''VideoGame/MegaManZX'')?
** And for that matter, what about the events that connect the [[VideoGame/MegaManClassic original Mega Man]] to ''[[VideoGame/MegaManX X]]'', and ''X'' to ''Zero''? For the latter, there has yet to be a game covering [[GreatOffscreenWar the Elf Wars]], which is largely mentioned in passing and only briefly showcased in [[AudioAdaptation drama CDs]].
** The First Annual Robot Tournament mentioned in ''VideoGame/MegaMan6'''s opening offers considerable potential for story expansion, both regarding the setup of the tournament itself and the number and diversity of the contestants. How many Robot Masters actually entered the tournament? What were their weapons and weaknesses? Did Cossack enter a robot into the tournament? Were any of the contestants Robot Masters formally introduced in later games? [[note]]The Japanese version sadly eliminates a lot of these possibilities as the First World Robot Tournament was ''beginning'' when Mr. X hijacked the eight contestants. Apparently they were the only eight in the Japanese version. [[TheyWastedAPerfectlyGoodPlot Talk about wasting a perfectly good plot.]][[/note]]
** ''[[VideoGame/MegaManBattleNetwork Battle Network]]'', being an AlternateTimeline to the Classic series where [[ForWantOfANail Dr. Light's research on network technology was funded by the government over Dr. Wily's focus on robotics]], has quite a bit of this going for it.
*** The most common application of the timeline split is [[SailorEarth introducing]] [[AlternateSelf cross-series counterparts]] of characters who'd logically exist in the other course of history. A frequent candidate for [[OCStandIn this]] is [[VideoGame/MegaManBattleNetwork4RedSunAndBlueMoon Dr. Regal]], as [[VideoGame/MegaManBattleNetwork5TeamColonelAndTeamProtoMan the fifth game]] establishes him to be [[spoiler:Dr. Wily's son]]. Surely the [[spoiler:BigBad's direct blood relation]] would be hanging around in the Classic series as well, right? [[spoiler:And considering Regal a) is CardCarryingVillain so repulsive that [[EvenEvilHasStandards his old man]] subjects him to HeelFaceBrainwashing to turn Regal into a productive member of society and b) was driven to [[HumansAreBastards his brand of nihilistc villainy]] after [[BrokenPedestal becoming dillusioned with both Wily and the society that rejected his father]], a number of fans see it fit to hit a Classic Dr. Regal with AdaptationalHeroism instead of portraying him as an OverlordJr or otherwise independent villain.]]
*** Despite some changes [[NonSequiturCausality that are harder to explain]], like [[AdaptationalNationality Dr. Light's nationality changing from American to Electopian]] ([[FantasyCounterpartCulture read: Japanese]]) or the extraterrestrial Duo now being [[VideoGame/MegaManBattleNetwork4RedSunAndBlueMoon an advanced NetNavi who judges intelligent life and destroys the worlds of those deemed wicked]] as opposed to [[VideoGame/MegaMan8 a heroic robot belonging to an intergalactic peacekeeping force]], the fact that [[InSpiteOfANail Wily is still a roboticist]] suggests a lot of backstory details may still be intact between continuities. An interesting (if not overlooked) tidbit comes in ''[=BN5=]'', where it's revealed that the ''BN'' versions of Light and Wily collaborated in their youth on [=SoulNet=] -- [[https://megaman.fandom.com/wiki/SoulNet a concept]] that meshed together their respective fields of study and sounds not too far removed from {{Cyberspace}} as it appears in the ''Zero'' series. One has to wonder if their Classic selves had a similar joint endeavor.
* ''VideoGame/MetalGearSolid'':
** The fandom is particularly fond of writing fics about Liquid's backstory (usually set during his time in the Middle East) or the day The Boss killed The Sorrow. In fact, these two plots are so popular in ''MGS'' fan fiction that almost every male ''MGS'' fan writer has taken on the former, and almost every female ''MGS'' fan writer has taken on the latter.
** Early on in ''VideoGame/{{Metal Gear Solid 2|SonsOfLiberty}}'', Otacon claims that almost every major nation, corporation and political group on Earth ends up developing their own version of Metal Gear in the wake of [[VideoGame/MetalGearSolid Ocelot releasing the weapon's plans]] -- which means that there are likely ''hundreds'' (if not more) models of Metal Gear that we never actually see in the series proper.
* ''VideoGame/Mother3'' leaves most of the details about the TimeSkip after ''VideoGame/{{EarthBound|1994}}'' (''Mother 2'' in Japan) deliberately clouded in mystery and enigma. As such, there are numerous fan works exploring [[spoiler:the catastrophe that completely destroyed the world of ''[=EarthBound=]'']], the people of Tazmily's [[spoiler:journey to the Nowhere Islands after their world's destruction]], and [[spoiler:Porky Minch]]'s [[StartOfDarkness descent into complete evil]], not to mention the full story of [[spoiler:the long-vanished race of people who built Osohe Castle]].
* Let's see, ''VideoGame/{{Neptunia}}''... [[AlternateUniverseFic Multiple dimensions?]] Check. [[ADayInTheLimelight Fleshed out]] [[AlternativeCharacterInterpretation characters]]... Check. Almost no history of its world. Check. [[SelfInsertFic An absolutely moe]], [[MostWritersAreMale all-female cast]]? [[HomoeroticSubtext Heavily implied]] {{yuri|Genre}} [[GirlOnGirlIsHot among said cast]]?! Check-a-doodle-doo.
* ''VideoGame/{{Overwatch}}'' has ''two'' backstories: one of a massive RobotWar that spawned the titular organization, and another of the exploits and controversies of said organization in the years following the war's conclusion. With much of the details being fairly hazy, both with the plot and with the characters' individual backstories, fans have planted a record number of EpilepticTrees despite the game being relatively young.
* ''Franchise/{{Pokemon}}'':
** ''Pokémon'' has generated massive numbers of fanfics over the years, thanks to the sheer cultural presence in the childhoods of an entire generation. The games (especially the early ones) often had sparse characterization and backstories for many characters (including [[HeroicMime the protagonists]]), making {{alternative character interpretation}}s easy for many writers. And we're not even getting into the related media...
** The various "Eeveelutions" are ''fan art'' potential, being far and away artists' most popular subjects. Similar body structures coupled with various elemental themes (and vulpine cuteness) mean they're easy to draw and provide great breadth for creativity.
** Similar to the Eeveelutions potential is the "Regional Forms" introduced in [[VideoGame/PokemonSunAndMoon Generation VII]]. The idea of wildly different regional variants of earlier Pokémon threw open the floodgates to reimaginations of familiar favorites.
* Because Chell in ''VideoGame/{{Portal}}'' has almost no backstory, there is a ''lot'' of room for imagination. Wheatley and [=GLaDOS=]/[[spoiler:Caroline's]] pasts are also very vague, and Chell's future is unknown, as all we ever saw was a cornfield. Since ''Portal'' also ties into ''VideoGame/HalfLife'', there is also potential for crossover stories involved a race between the Combine and Human Resistance to get to whatever Aperture Science tech is on board the Borealis.
* ''VideoGame/PuyoPuyo'':
** Characters besides Klug getting possessed by the demon is a fairly popular subject for fan art. [[https://twitter.com/MZKN002/status/743638925965565952 Possessed Sig]] is a obvious example since [[spoiler:it's implied his miscolored left arm and eye are connected to part of the demon]], but there are plenty others out there, such as [[https://www.pixiv.net/member_illust.php?mode=medium&illust_id=43127812 Possessed Witch]] or [[https://www.deviantart.com/fedoramoron/art/Strange-Tee-796629955 Possessed Tee]].
** Some people enjoy coming up with Mini and Mega forms for characters not present in ''Puyo Puyo 7'', such as Lidelle, Accord or Witch.
** How and why Yu and Rei died? There are hints this was a tragic affair, but it's never further elaborated in the games proper.
* ''VideoGame/{{Pyre}}'': In a certain ending where [[spoiler:Oralech survives and is left on the same side as Volfred, they will rebuild their relationship, but the details of their conversation is left a mystery, leaving any space for romantic or platonic interpretation to their previous relationship]]. The epilogue specifically mentions that they were "seldom seen traveling separate" afterwards.
* There's a three-year gap in the ''Franchise/ResidentEvil'' timeline, between the end of ''[[VideoGame/ResidentEvilCodeVeronica Code: Veronica]]'' and the "Umbrella's End" stage in ''[[VideoGame/ResidentEvilTheUmbrellaChronicles The Umbrella Chronicles]]'', that has never been explored to any serious extent. We've been told here and there that the cast was running around the world fighting viruses, arresting evil scientists, and having adventures, but aside from Leon's adventure in South America in ''[[VideoGame/ResidentEvilTheDarksideChronicles The Darkside Chronicles]]'', it's never really been discussed.
* ''Franchise/SilentHill'', being a premiere MindScrew series told exclusively from the view of the player character ([[spoiler:with the possible exception of ''[[VideoGame/SilentHillShatteredMemories Shattered Memories]]'']]), contains a wealth of information for fans to explore, especially concerning the nature of the eponymous GeniusLoci and the cult that worships it.
* As Creator/SanzaruGames refused to continue the franchise, ''VideoGame/SlyCooperThievesInTime'' had quite a lot of {{Fix Fic}}s that [[spoiler:either justified Penelope's poorly written FaceHeelTurn or undid the DownerEnding, with Bentley and Murray finding Sly in Ancient Egypt and bringing him home, or even having Sly turn up in ''modern day'' Egypt instead]].
* ''VideoGame/SoulSeries'': ''VideoGame/SoulcaliburV'' got barely over a year in development. [[http://train2game-news.co.uk/2012/03/26/train2game-news-soulcalibur-v-story-mode-one-fourth-of-planned-size-each-character-was-to-have-own-story/ The length of its Story Mode was drastically shortened due to time constraints,]] with ''numerous'' plot elements mentioned in official bios prior to the game's release being ignored or glossed over left and right and only a [[NoExportForYou Japanese-only artbook]] attempting to [[AllThereInTheManual fill in the blanks]] of exactly ''what'' happened in [[TimeSkip the seventeen-year interim between]] ''SCIV'' and this game. (Heck, there weren't even character-specific Arcade endings to help shed light on things.) For a while, fanfic writers were scrambling to answer the various questions that ''SCV'' couldn't bother to... only for ''VideoGame/SoulcaliburVI'' [[AlternateContinuity to come along]] [[{{Revision}} and]] [[ContinuityReboot wipe the slate clean]]. Even then, that [[spoiler:''VI'' [[ArcWelding frames the events of its predecessor]] as a definite BadFuture (despite ''V'' ending with both soul swords disappearing into Astral Chaos) and features [[MyFutureSelfAndMe the original timeline's Cassandra tipping off her current-day incarnation to this development]]]] is rife with possibility.
* ''Franchise/SuperMarioBros'': If Princess Peach isn't Bowser Jr.'s mother, then who is?
* As ''VideoGame/SuperSmashBros'' [[NoPlotNoProblem doesn't really do plot]] (barring [[VideoGame/SuperSmashBrosBrawl The Subspace Emissary]] and [[VideoGame/SuperSmashBrosUltimate World of Light]]) it also lacks any sort of real lore. As such, quite a few fans have made their own expansions to the ''Smash Bros.'' world, especially in regards to the OriginalGeneration.
* ''VideoGame/TalesSeries'':
** ''VideoGame/TalesOfSymphonia'' has a two-year gap between the first and [[VideoGame/TalesOfSymphoniaDawnOfTheNewWorld second]] games in the series for fanfic writers to speculate on. Most of the party members also have at least a few gaps to fill in... not to mention the oft-mentioned but barely seen Kharlan War era, four thousand years ago, which has spawned its own subgenre within the fandom.
** Similarly, there's plenty in the post-timeskip epilogue to ''VideoGame/TalesOfTheAbyss'', except that it's more like Essay Fuel since people are just trying to explain [[GainaxEnding what the hell actually happened]].
* ''Franchise/TouhouProject'':
** The lack of backstory for many of the characters or the events of the PC-98 games are prime fanfic (and fan comic and fan video) fuel.
** Yukari's ability to manipulate boundaries is pretty much made for this. What, exactly, constitutes a "boundary"? [[SemanticSuperpower Pretty much whatever the hell she feels like]], allowing stories about going to the moon, de-aging people, hitting people with trains, bringing people from outside to Gensokyo...
* ''VideoGame/{{Undertale}}'' has three burgeoning types of fanfic, coming less than a month after release:
** The Fallen Human's backstory. [[spoiler:Both Chara AND Frisk's.]] The backstory we have is anywhere between vague to nonexistent, so it's fertile ground for fan expansion.
** What happens after the [[spoiler:True Pacifist]] ending. While what we see is incredibly upbeat and happy, that doesn't stop people from exploring just how both human and monster society deals with such a sudden change in dynamic.
** {{Fix Fic}}s regarding the ultimate fate of Flowey[[spoiler:/Asriel]]. Even the best ending seems to give him the shaft, and more than a few people can't help but feel obligated to try and help give even him a happy ending.
** Along with those, what is the fate of the monsters when they [[spoiler:reach the human world]], and how did they get to where they are? There are some things that happen that couldn't have happened within a short time after the game ended ([[spoiler:Toriel teaching at a school being the most obvious]]).
** Who are the [[spoiler:six human souls]], and what is their backstory? Very little is actually given about them in terms of information.
** What if [[spoiler:the skeletons]] switched roles is a popular story. Specifically, what if [[spoiler:you killed Sans first? Would Papyrus become a badass and be the one to give you a hard time]]?
*** While we're at it, [[spoiler:how did Sans get his abilities in the first place? And when (and how) did he become aware of the reset situation]]?
** Who the hell IS [[spoiler:Dr. Gaster]], and what happened to him to cause him (and those who knew him real well) to [[spoiler:not exist anymore]]?
* The ''VideoGame/{{Unreal}}'' series, especially the ''[[VideoGame/UnrealTournament Tournament]]'' games. In the SP games we're given several glimpses of what life on Na Pali used to be before/after the Skaarj invasion, the crash of the ISV-Kran, the landing of the Mercenaries and before the crash of the UMS Vortex Rikers, including [[PlayerCharacter Prisoner 849]]'s vague backstory. We're also left wondering what happened after [[spoiler:Prisoner 849 blows the UMS Bodega Bay]], with either both [[spoiler:the Bodega Bay crew and the Prisoner [[FeaturelessProtagonist itself]]]]. And that's only the first game and its ExpansionPack. In the ''Tournament'' and ''Championship'' games we get vague backstories for every character, location, weapon and vehicle, barring some exceptions. Needless to say, it's part of the reason of why the Unreal series has a really strong GameMod community[[note]]The other being the hugely customizable and powerful UsefulNotes/{{game engine}}s themselves, way before they fueled complete generations of games[[/note]]. With so many ground to cover, odds are that someone already did a campaign for a question you may have.
* How did various yokai in ''VideoGame/YokaiWatch'' become yokai?
* ''VideoGame/YumeNikki'' has little to no context and background information for many areas and characters, including Madotsuki herself, leaves the game's canon very open to fan interpretation and expansion.
