History EnemyMine / Videogames

* Plenty in ''VideoGame/SuperSmashBrosBrawl'':
** Marth and Meta Kight fighting, then [[spoiler:suddenly teaming up to defeat the Primids around them]]. [[spoiler:This happens again when Meta Knight fights Lucario, then, immediately after the fierce battle that manages to turn one of them into a trophy, they team up to board the Halberd. This almost happens again when they find Solid Snake, but Lucario stops Meta Knight. Meta Knight has an interesting way to make new friends...]]
** Ancient Minister [[spoiler:aka a R.O.B. unit]] helping [[spoiler:Donkey Kong, Diddy Kong, Captain Falcon, Pikachu, Samus, and Olimar]].
** King Dedede (by Ness and Luigi), Bowser (by King Dedede, who pointed out that there's a bigger enemy, [[spoiler:Tabuu]]), Ganondorf (by Link and Zelda), and Wario (who kicks King Dedede, which King Dedede, Luigi, and Ness respond to by pointing out [[spoiler:Tabuu]] to Wario, who ignores it. When they decide to move on without him, he races past on his bike and beats them to the BigBad's final dungeon).

* In the remake of ''VideoGame/TheTowerOfDruaga'' for the UsefulNotes/PCEngine, Gilgamesh, instead of killing the Succubus, must convince her to help him so he can get the Blue Crystal Rod and defeat Druaga.

* ''Franchise/{{Halo}}'' does this ''twice''. First, at the end of ''VideoGame/Halo2'', the humans of the UNSC and the Covenant Elites, who were previously mortal enemies, join forces to fight the Prophet of Truth, who betrayed the latter and was responsible for ordering the extermination of the former. In ''VideoGame/{{Halo 3}}'', right before confronting Truth himself, the Master Chief and the Arbiter join forces with [[spoiler:the Flood]] to stop Truth from killing ''everyone'' in the galaxy.
** Granted, the alliance with [[spoiler:the Flood]] lasts only five minutes, but no one was really expecting [[spoiler:the [[EldritchAbomination Gravemind]]]] to help you any more than it has to. Although it did at least have the minimal grace to wait until Truth was dead first.

* In ''TabletopGame/WarhammerAgeOfSigmar - The Silver Tower'' from Perchang, heroes from the completely disparate Forces of Order, Chaos, Destruction and Death are forced to work together with no grumbling. That's because a powerful entity of Tzeentch has taken them captive and making them go through combat trials for its entertainment

---> '''Loghain''': Pray our King is admenable to reason.
---> '''Dalish Warden / Dwarf Warden''': The Dalish have ''no'' Kings! / He's not ''my'' King!

*** Explicity stated to be the relationship between Mage!Hawke and Knight-Commander Meredith. She only lets Hawke continue to roam free because it's more useful to turn their magic against Kirkwall's enemies. That, and, she's utterly ''terrified'' of them!

* ''VideoGame/SuperRobotWarsDestiny'' is an interesting example. While the game includes antagonists from ''[[Anime/MobileSuitGundamZZ Gundam ZZ]]'', ''[[Anime/MobileSuitGundamCharsCounterattack Char's Counterattack]]'', and ''[[Anime/MobileSuitGundamWing Gundam Wing]]'', the situation at hand causes them to have the competence to ally with you all at the start since things are bad enough. Due to the [[Anime/MobileSuitVictoryGundam Zanscare Empire]] attacking Earth, along with the [[Manga/GetterRobo Invaders]], and the [[Anime/{{Macross7}} Protodevlin]], and the united alien forces of the villains from ''[[Anime/MiraiRoboDaltanious Daltanius]]'', ''Anime/{{Godmars}}'', and ''[[Anime/UFORoboGrendizer Grendizer]]'', your heroes quickly realize the only organizations out there that still have the sheer manpower to defend humanity are the Principality of Zeon and the Order of the Zodiac. [[Anime/TheBigO Roger Smith]] takes care of the negotiations. This results in the first ''heroic'' roles for longstanding villains like [[LadyOfWar Haman Karn]] and Treize Kushinada.

* ''VideoGame/AlienVsPredatorCapcom'' has two Predators helping the humans hunt down Aliens on Earth. Their objectives, though, are different: the humans are trying to save the planet, while the predators are [[ProudWarriorRaceGuy hunting]].

* Seems almost guaranteed to happen at least once per game in the ''Suikoden'' series, with quite a few instances of your enemies becoming official members (and temporary allies) of your own army. Also happens between individual army members, some examples being Ayame and Watari in III, Klaus and Kiba in II, and Nakula alongside Shigure, Sagiri, and Oboro in V.

* ''VideoGame/SpiderManFriendOrFoe'' has the entire premise of its story built around this trope. The story involves several prominent members of Franchise/SpiderMan's RoguesGallery being mind controlled by another villain. Spider-Man subsequently confronts the mind controlled villains and frees them from the mind control, at which point they readily agree to join forces with Spider-Man to find, and exact their revenge upon, the one who was mind-controlling them.
* ''VideoGame/SpiderManWebOfShadows'':
** Spider-Man decides to break the evil mad scientist known as the Tinkerer out of Ryker's Island to get him to build a device capable of decimating ComicBook/{{Venom}}'s symbiote army... if only because ReedRichardsIsUseless by being absent when he tried to phone him, [[ComicBook/IronMan Tony Stark]] and [[ComicBook/XMen Hank McCoy]] are also absent, and he doesn't feel like dealing with Hank Pym. The mission where you do so also involves another Enemy Mine -- namely, freeing the Rhino and '''riding him''' to break through the island prison's walls. Some time later, when the Tinkerer requests that he be transferred over to the Kingpin's facilities to complete the device, Spidey and SHIELD end up forming one with the crime boss as well.
** Notable in that Spider-Man fully acknowledges that breaking out the Tinkerer is a bad idea, and he doesn't like it (unless you're playing the evil path), but that the threat of the symbiote army is so great that he really can't wait for anyone else to show up and help him solve the problem. This and other questionable actions get him in a ''lot'' of trouble when ComicBook/{{Wolverine}} shows up and [[WhatTheHellHero calls him out]].
** There's also the possibility for a ''third'', very temporary Enemy Mine. In order to ''get'' to Ryker's, you have to make one of the "good or bad" choices that are sprinkled throughout the game. Choosing the bad option has you get a ride there from the Vulture. (In case you're wondering, the good option is a ride from ComicBook/MoonKnight.) In the DS version, you can also choose the ''Dark'' path by helping the Green Goblin.

** As for its successor series, ''VideoGame/MarvelUltimateAlliance 2'' does it as well: this is how the game segues from an adaptation of the ''Comicbook/CivilWar2006'' to Vicarious Visions' original storyline, as the Negative Zone brawl is interrupted by [[spoiler:SHIELD's nanites gaining sentience and beginning an AssimilationPlot]], forcing the pro- and anti-registration heroes to put their political squabble aside. And it kinda does not snapback, for when is all said and done, the Civil War is settled peacefully, [[MultipleEndings the winning side being the one you chose at the beginning of it]].

* With the ''VideoGame/StarFox'' team mostly disbanded at the beginning of ''Star Fox Command'' and Fox unable (or unwilling) to get his friends back together, one of the paths you can take has Fox hiring long-time rival Wolf O'Donnel to help him defeat the BigBad.
** And going back to ''VideoGame/StarFoxAssault'', Wolf helps Fox rid the menace of the Aparoids in the last four missions.

* ''VideoGame/DawnOfWar'': in the final battle the Eldar decide to put your differences aside and join you against Chaos forces. In the ending cutscene however they will turn against you to prevent Gabriel Angelos from shattering the demon artifact - which he [[NiceJobBreakingItHero ultimately does]]. Granted, the Eldar could at least for once explain in advance their motivations, and the Humans could at least listen...
** the expansion ''Winter Assault'' zigzags this, to the point that more often than not it is a MeleeATrois. Basically the Eldar assists the Imperial Guard against the Orks and Chaos forces to prevent the latter from reaching an ancient titan war machine, the only way to kill the incoming Necrons. Distrustful as ever, both parties will betray each other at the end of the penultimate mission. In the case of the Eldar, though, they will convince the Imperials one last time to join forces against the Necrons during the last mission, only to betray them again in the ending cutscene.

* The ''VideoGame/AdvanceWars'' series:
** Olaf and Andy can work together in the final mission of the first game, and will work together in ''Mission 17: T Minus 15'' in ''Advance Wars 2: Black Hole Rising''. Though their ''countries'' aren't enemies anymore at this point, Olaf is still reluctant at best and spiteful at worst of Andy for all the times he was defeated by the young lad. By the end of ''T Minus 15'' they're more or less friends, with Olaf even offering to let Andy continue fighting in Blue Moon and being disappointed when Andy refuses and has to return to Orange Star. Not that he'd ever admit it:
---> '''Olaf:''' If you like, I will let you continue to battle here in Blue Moon...
---> '''Andy:''' I'm gonna head back to Orange Star for now.
---> '''Olaf:''' Hm? You're leaving already?
---> '''Andy:''' I'll be back as soon as everyone at home's ready to go!
---> '''Olaf:''' Oh, is that so? Well then, see you aga-- No, wait! There's no need for you to come again!
** Late into ''Advance Wars: Dual Strike'', [[spoiler:Hawke]] questions Black Hole about their plans a little too much and gets marked for death by [[BigBad Von Bolt]] (though, dialogue from Kindle implies it was always their intent to kill [[spoiler:Hawke and Lash]] once they were [[YouHaveOutlivedYourUsefulness no longer useful]]). This culminates in the two of them being chased by [[BlobMonster Oozium 238]], being rescued by Jake, and reluctantly joining the Allied Nations in order to survive.
** Halfway through ''Advance Wars: Days of Ruin'' (after [[spoiler:Captain Brenner is killed]]), Tasha, Gage, and the surviving Lazurians temporarily set aside their differences with Will and the 12th Battalion to help him stop Admiral Greyfield's New Rubinelle Army from launching missile strikes against them. By the end, they're staunch allies and the decades-long feud between old Rubinelle and Lazuria is finally over. [[spoiler:Similarly, after the fall of Admiral Greyfield, the remainder of the New Rubinelle Army join the 12th Battalion as well in order to survive Caulder and The Creeper.]]

* In ''{{VideoGame/Battlezone|1998}}'', the Americans and (remnants of) the Soviets team up to take down the Furies (alien spaceships brought back by the Soviets). In fact, there is even a rescue mission before the team-up mission, in which you have to rescue the Soviet survivors (the Furies rebelled after taking down the Black Dogs (third faction and the one used to create the Furies in the first place)).

* At the end of ''VideoGame/{{Bomberman 64}}'', halfway through the final battle against [[spoiler:Sirius]] — the scumbag who used the hero throughout most of the game — [[spoiler:Regulus]], who was presumed dead earlier, appears and saves Bomberman's life at the last second. After some dialogue, [[spoiler:Regulus]] forms a temporary alliance with Bomberman to take down [[spoiler:Sirius]]. He even helps Bomberman escape the collapsing fortress before reminding him that they aren't friends and they will fight again.
* ''VideoGame/BreathOfFireIV'' finds Ursula and Scias teaming up with your party, despite being (separately) employed by different enemies of yours (Ursula is from the Fou Empire; Scias was employed by Ludia, whose relations with the heroes are… shaky at best).

** In ''LightNovel/FateZero'', there also was such a scenario against Servant Caster. This Servant and his Master, Ryuunosuke Uryuu, were brutal {{Serial Killer}}s and their favorite prey was [[HarmfulToMinors children]], so the whole Grail War was temporarily put on hold ''solely'' to get them taken down. '''That's how bad the situation was'''. [[spoiler:Ultimately, Ryuunosuke is sniped down by Kiritsugu, and after this, Caster and a monster he had summoned are defeated by Saber, but only with the assistance of Rider and Lancer.]]

* ''VideoGame/XMenLegends II'' had the ComicBook/XMen and their old enemies, the Brotherhood, teaming up to fight the forces of Apocalypse, who had abducted members of both teams.

*** The original game also has a brief moment of this. [[spoiler:The first time Magneto confronts the X-Men, the entire mansion gets attacked by an army of sentinels, causing the X-Men and Magneto's forces to fight alongside each other against the mutant-hunting robots.]]
** As for its successor series, ''VideoGame/MarvelUltimateAlliance 2'' does it as well: this is how the game segues from an adaptation of the ''Comicbook/CivilWar'' to Vicarious Visions' original storyline, as the Negative Zone brawl is interrupted by [[spoiler:SHIELD's nanites gaining sentience and beginning an AssimilationPlot]], forcing the pro- and anti-registration heroes to put their political squabble aside. And it kinda does not snapback, for when is all said and done, the Civil War is settled peacefully, [[MultipleEndings the winning side being the one you chose at the beginning of it]].

* In ''VideoGame/SpiderManWebOfShadows'', Spider-Man decides to break the evil mad scientist known as the Tinkerer out of Ryker's Island to get him to build a device capable of decimating ComicBook/{{Venom}}'s symbiote army... if only because ReedRichardsIsUseless by being absent when he tried to phone him, [[ComicBook/IronMan Tony Stark]] and [[ComicBook/XMen Hank McCoy]] are also absent, and he doesn't feel like dealing with Hank Pym. The mission where you do so also involves another Enemy Mine -- namely, freeing the Rhino and '''riding him''' to break through the island prison's walls. Some time later, when the Tinkerer requests that he be transferred over to the Kingpin's facilities to complete the device, Spidey and SHIELD end up forming one with the crime boss as well.

** There's also the possibility for a ''third'', very temporary Enemy Mine. In order to ''get'' to Ryker's, you have to make one of the "good or bad" choices that are sprinkled throughout the game. Choosing the bad option has you get a ride there from the Vulture. (In case you're wondering, the good option is a ride from ComicBook/MoonKnight.)
*** In the DS version, you can also choose the ''Dark'' path by helping the Green Goblin.

** ''Franchise/MassEffect'' runs on this trope anyway. You gather a team of people from various species, and almost all of them are at least a bit prejudiced against the other races due to past events such as the First Contact War and the krogan genophage. They all end up working together to save the universe from a common threat. One of those people you can recruit is [[spoiler:Morinth, Samara's sociopathic daughter, who intended to add Shepard to her long list of DeathBySex victims]].