%%This page's examples section is sorted alphabetically. It would be lovely if you'd maintain this, thanks.
%%
Unlike other media, this trope can frequently apply to the gameplay process alone in video games. However, this trope is still often crucial to the plot of each work, and so spoilers are to be expected and cannot always be marked. Read at your own discretion.
----
* Meta example [[http://groupthink.kinja.com/payback-for-women-who-ve-ever-been-questioned-about-the-472468506 here]]: "Snarky guy in coffee queue eyes off my ''VideoGame/BioShockInfinite'' T-shirt, suggests I 'probably haven't even played it'. So I told him the ending."
* As a rule of thumb, most games have multiple ways of the player killing himself in an attempt to kill his opponent. Especially splash damage from rockets and grenades; explosives in general are notorious in many games for killing both the shooter and target.
* Many {{RPG}}s have a game mechanic where a character [[CastFromHitpoints sacrifices health for mana or some other benefit]]. If it’s used too much without healing, this trope is invoked.
* Games with AttackReflector magic/skills/abilities allow for this, especially if the backfiring attack was an instant-kill or the enemy in question was already half-dead.
* In ''VideoGame/AgeOfEmpiresII'' (Conqueror's Expansion) there is the Petard unit. It is a large, bulky guy carrying two giant kegs (looks like one in each arm) of gunpowder, it then walks into (say) a wall and ''explodes'', killing the unit and doing a good deal of damage, destroying most weak buildings. If it’s attacked and killed, the unit explodes anyway, leading to a literal case of Hoist By His Own Petard.
** Spamming these is a quick way to take down most buildings, and don't worry, WeHaveReserves.
** Your units aren't FriendlyFireproof from siege equipment (though thankfully they are from archers and cannoneers) so unless you're very careful you can lose units to your own catapults. Of course, you can also trick enemy catapults into killing their own side.
* At least one example (possibly two, depending on the player's choices) in ''VideoGame/AlphaProtocol'':
** Early in the game, Mike Thorton is betrayed by his GovernmentAgencyOfFiction, Alpha Protocol, which tries to kill him to cover up its dirty deeds. After he escapes, he is able to use Alpha Protocol's own safehouses as his bases while he battles them, because the agency is so compartmentalized that not even the bosses know what all of its resources are.
** In Moscow, Thorton can forge an alliance with a rival band of covert operatives, G22, who will agree to sell him weapons and intel for his future missions. Very shortly, however, he can decide to go with a different handler for a critical mission, which makes G22 his enemies. This decision, however, will not be made until ''after'' Thorton has had the opportunity to buy all of G22's intel for the mission, including a strategically placed sniper rifle that he can use to kill dozens of their agents.
* Can occur in an interesting way in ''VideoGame/ApeEscape 3'': Certain monkies can do a special attack that knocks the player on his/her butt and drop their equipped item. It's limited to the Stun-Club [[OhCrap and the Monkey-Net]]. If, let's say, you get caught by your own monkey-net, what do you think happens? You get sent back to the hub-level. Truly hoisted by the player's own petard!
* The Vendigroth Device in ''{{VideoGame/Arcanum|OfSteamworksAndMagickObscura}}'' invokes this; certain powerful mages have the ability to seal themselves in a magical cocoon at the moment of their deaths, regenerating their bodies and increasing their lifespans. Because [[MagicVersusScience magick and technology disrupt one another]] in the Arcanum-verse, the device uses science to turn a mage's own power against them, making the cocoon destroy their bodies.
* In ''VideoGame/AssassinsCreedII'', Ezio can disarm mooks and OneHitKill them with their own weapons.
** In the first game, Al Mualim is defeated by his own student using the same arts he taught him.
* In ''VideoGame/AtlantisTheLostTales'', Creon gets eaten by the monster he unleashed.
* Twice in ''{{VideoGame/BioShock|1}}''. The first incident, you just hear it in an audio-diary and see the result: sinister detached MadScientist Dr. Suchong is killed by one of the Big Daddies he's been working to produce, when his attempts to make them "imprint" on the Little Sisters unexpectedly succeeds. The second time, you're there to see it happen: "Atlas"/Fontaine being mobbed and killed by a whole gang of Little Sisters armed with syringes... Definitely creepy.
** There's a third one, available as a special achievement. After you kill Sander Cohen, take his photograph. Since the entire mission for Cohen rests on killing his "apprentices" and taking their photos, the name of the achievement, appropriately enough, is "Irony".
** In fact, the main character, Jack, himself was more or less a creation of Fontaine's meant to help him take over Rapture. In the end, he becomes the very thing that leads to Fontaine's downfall.
** Nitro Splicers (which throw Molotovs at the player) plus the [[MindOverMatter Telekinesis Plasmid]] is a very literal example of this trope.
* In ''VideoGame/BlazBlueCalamityTrigger'', at one point in Bang's Story Mode, after beating Jin, Yukianesa proceeds to freeze her own user.
* In ''VideoGame/{{Bomberman}}'', your bombs do not have any DamageDiscrimination. This means it's possible to die to one of your own bombs, especially if you wedged yourself between a bomb and a dead-end.
* In ''VideoGame/BrainDead13'', both Vivi and Neurosis are defeated by their own attempts to kill Lance.
** During the stairs sequence, Lance picks up several of Fritz's weapons to use against him, including at least [[DropTheHammer two hammers]].
* In ''VideoGame/CastlevaniaOrderOfEcclesia'', Dracula's power is borrowed to form the Dominus Glyph. Shanoa kills him with it.
** This trope is used doubly for Barlowe, as he not only does he get killed by his own student/"daughter"/experiment, but ALSO by his own moves if you have the foresight to pull it off of him mid-fight.
** In one of the [[MultipleEndings bad endings]] of ''[[VideoGame/CastlevaniaChroniclesOfSorrow Dawn of Sorrow]]'', [[spoiler:Celia Fortner (seemingly) kills Mina in front of Soma, hoping to trigger his transformation into Dracula. She succeeds. Pity that she then ends up being the first victim of the new Dark Lord.]]
** In ''VideoGame/CastlevaniaLordsOfShadow2'', one of the enemy types were the spear-wielding Harpies. The FinishingMove on them had them stabbed right through with it.
* A form of this: In the intro to ''VideoGame/CommandAndConquer Red Alert'', Einstein uses a time machine to erase Hitler from history. In the intro to ''Red Alert 3'', the Soviets use a time machine to erase Einstein from history.
** Not a clear-cut example, though, as the time machines are different. One was developed by Einstein (a different Einstein, though), and the other by Dr. Zelinsky.
* Part of the reason why ''VideoGame/{{Daikatana}}'' was so thoroughly bashed upon release lies in that trope. In the first set of levels, every weapon the player comes across seems to be specifically designed to do ''at least'' as much damage to its own user as it does to actual enemies. An ion blaster, found near a river, which shorts out when fired underwater and bounces missed shots back into your own face and a C4 launcher which only throws the explosive far enough that you'll be at the edge of the explosion are the most prominent examples.
* The potential fates of at least three of ''VideoGame/DeadRising'''s bosses.
** [[MonsterClown Adam the Clown]]. Woozy after the fight, he ends up falling on his own WeaponOfChoice -- a pair of mini chainsaws. While they're turned on. Laughing as they slice his guts to ribbons.
** [[ChurchMilitant Sean Keanan]]. Leader of the [[SecretCircleOfSecrets Raincoat Cult]] that worships its god in the form of a creepy faceless mannequin with a sword driven through it. When he stumbles over to it and screams to be given strength after losing the fight, it falls over, driving the sword in the middle right into his eye.
** [[PyroManiac Paul Carson]]. His WeaponOfChoice is the MolotovCocktail, and when cornered by Frank, he lights another one to try to fend him off. [[TheKlutz He's been backing up the entire cutscene and ends up tripping]]... [[ManOnFire It's obvious where this goes]]. If the player moves quickly, he can be saved with a fire extinguisher, resulting in a HeelFaceTurn.
** This also happens to several bosses in the sequel, ''VideoGame/DeadRising2''.
*** [[LethalChef Antoine Thomas]]. A very lethal and very crazy chef, he catches and cooks up survivors that stumble into his restaurant. At the end of his boss fight, he stumbles away from the player and winds up dunking his head and half his body into a vat of boiling-hot fry oil.
*** [[FinalBoss Raymond]] [[WellIntentionedExtremist Sullivan]]. After Chuck exposes the fact that Sullivan started the outbreak on behalf of Phenotrans, the two of them fight [[RuleofCool on a raised platform, surrounded by hundreds of zombies, while an AC-130 gunship swoops in every now and then to bombard poor Chuck.]] After the fight, it looks like Chuck has finally won, but Sullivan trips him up and then proceeds to gloat while he motions for the plane to pick him up via parachute. But as he radios for the plane, Chuck handcuffs Sullivan's harness to the construction scaffolding just as the plane swoops in to pick him up, [[HalfTheManHeUsedToBe resulting in Sullivan getting bifurcated by his rescue plane.]]
* Stross of ''VideoGame/DeadSpace2'' pulls a FaceHeelTurn to start the third act of the game. He does so by poking ActionGirl Ellie's [[EyeScream eye out with a screwdriver]]. When he goes to do the same thing to [[PlayerCharacter Isaac]], Stross promptly [[CutsceneBoss gets the same screwdriver]] [[KarmicDeath pierced into his brain]].
** In all Dead Space games, enemies that launched explosive projectiles at you (legless Brutes, Pods, Guardians) could have them caught with stasis and reflected back at them. ''VideoGame/DeadSpace3'' even had Unitologist troopers with missile launchers and allowed you to do the same with their rockets. Similarly, the Waster Necromorphs that fought with axes in that game could also have them pulled from their hands and sent right back.
* In ''[[VideoGame/DevilMayCry Devil May Cry 4]]'', you can catch and throw back Credo's giant throwing spears, which not only deals a great deal of damage, but also makes him vulnerable for some time.
* This trope pretty much summarizes the plot and ending of ''VideoGame/DiabloIII''. The attempt by Baal to corrupt the Worldstone in Lord of Destruction [unseals the powers of the Nephalem, the angel-demon hybrids from whom humanity is descended, allowing humans a chance to rise to the ancient power of their ancestors. Diablo's own plan to become the Prime Evil combined with the act of asshattery mentioned earlier gets all seven arch demons DeaderThanDead.
* In ''VideoGame/{{Dishonored}}'', it is possible to [[TimeStandsStill freeze time]] as a guard fires a shot, [[DemonicPossession possess him]], make him walk in front of his own bullet, unpossess the guard and revert time to normal... [[VideogameCrueltyPotential And then watch as he is hit by the very bullet he fired at you]].
* ''Franchise/TheElderScrolls'':
** Non-villain example: In ''VideoGame/TheElderScrollsVSkyrim'', a mage named Arniel Gane tries to duplicate the [[OurDwarvesAreAllTheSame Dwemer's]] feat in the series' backstory: an ambiguously successful attempt to AscendToAHigherPlaneOfExistence. When he sets off the magic by stabbing a warped soul gem (a stand-in for the [[VideoGame/TheElderScrollsIIIMorrowind Heart of Lorkhan]]) with Keening, it [[GoneHorriblyWrong Goes Horribly Wrong]]: he turns himself into a shade that the [[PlayerCharacter Dovahkiin]] can summon.
** In the backstory, Ulfric Stormcloak used an Unrelenting Force shout to gain an advantage fighting High King Torygg. If the player sides with the Imperials, you can use that same shout to finish off Ulfric.
** And ''much'' further back in the backstory, according to the [[Literature/TheElderScrollsInUniverseBooks in-universe book series]] ''2920: The Last Year of the First Era'', this trope was {{exploited|Trope}} by the Akaviri Potentate to take over the Empire. He piggy-backed on an existing assassination plot against Emperor Reman III, which was brought about by actions resulting from Reman's own paranoia.
* ''VideoGame/{{Fallout 3}}'': In "You Gotta Shoot 'Em in the Head", you can non-lethally obtain the keys from the three Ghoul-haters, then take out Mr. Crowley himself with a headshot. Tenpenny rewards you for this, if he's still alive. Speaking of Tenpenny Tower, in the quest of the same name, you can arrange for the Ghouls to peacefully move in, but they change their mind and [[TrojanHorse kill the residents anyway]] after two weeks.
** In ''VideoGame/FalloutNewVegas'', completing the challenge "Talk About Being Owned" (from the ''Gun Runners Arsenal'' DLC) requires you to shoot Benny with his own gun, which he shot you with at the beginning of the game. During ''Old World Blues'', Dr Mobius implanted the interest in the three technologies in the Think Tank so they (or rather you) would gather them and bring them to him, so they couldn't use them to leave the Big Empty. This instead resulted in the Think Tank obtaining their designs, and getting closer than ever to escaping. At the end of ''Lonesome Road'', if you manage to settle things peacefully with Ulysses, he finds himself forced to aid you in fighting off the army of Marked Men he originally set upon the temple to finish you off, in case he himself wouldn't succeed in killing you. There's also the option during the final battle for the Dam to have the Boomers bomb the NCR forces on your orders, when the NCR Ambassador was the one who first instructed you to go make contact with the Boomers, and probably up until that very moment thought you had secured their support for the Republic's side.
** In the backstory of ''Dead Money'', Sinclair attempted to trap Dean and Vera in the vault, but after Vera confessed to him, he changed his mind and attempted to disarm the trap, but succumbed to the poison gas cloud that was also intended to protect the casino. Elijah [[YouHaveOutlivedYourUsefulness attempts to lure the Courier into the same trap]], but if you sneak out before he comes downstairs, he will be the one trapped.
* ''VideoGame/FarCry: Instincts'' has Jack Carver, infected with a beast-man mutagen, face down the MadScientist behind the whole project. The scientist has a group of animal-human hybrids at his beck and call, and orders them to attack Jack. By this time, however, Jack's killed so many mooks and bosses that the beasts view ''him'' as the alpha, turn on the mad scientist, and tear him to shreds.
* ''Franchise/FinalFantasy'' games make it possible for characters (be they heroes or villains) to hurt or kill themselves by casting magic on a target with a reflective spell in effect.
** [[VideoGame/FinalFantasyVI Emperor Gestahl]] and [[VideoGame/FinalFantasyVII President Shinra]] are notable examples in the series of what happens when you lose control of your genetically-altered human weapons.
** In ''VideoGame/FinalFantasyV'', Exdeath [[spoiler:becomes absorbed by the very cosmic power he was obsessed with controlling, erasing his personality and creating a new entity that wants to completely destroy the world he devoted his existence to conquering]].
* ''VideoGame/GigaWing'' is a well-known BulletHell example. "Large cluster of bullets" generally means "reflect this back at the enemy for massive damage."
* In ''VideoGame/TheGodfather'', it's dangerously easy to hit yourself with your own MolotovCocktail. If you don't run fast enough, your own dynamite or bomb can take you out too.
* In ''VideoGame/GodHand'', the tall mooks will sometimes try to grab and suplex Gene. Wriggling the left thumbstick to carry out the {{Action Command|s}} when prompted allows Gene to counter-suplex them for good damage. The gorilla luchador also has a move where it slams Gene into the ground, then attempts to jump on him. Hitting the ActionCommands allows Gene to dodge, causing the gorilla to hurt itself more than the initial slam hurt him.
* The battle with Hades in ''VideoGame/GodOfWar III'' kicks off with Hades telling Kratos "YourSoulIsMine!" and at one point early in the battle, he attempts to consume Kratos's soul using the Claws of Hades. Kratos takes the Claws away from Hades at one point during the battle, and then proceeds to use them to consume ''his'' soul in the battle's finale.
** From the same game, Kratos steals Hercules' [[PowerFist cestus]] and uses it to cave his skull in, and kills a giant scorpion by impaling it on its own stinger. In the second game, Theseus is stabbed through the guts with his own spear and has his head smashed in with the door he was trying to prevent Kratos from passing through, and the Barbarian King is crushed with his own hammer.
** And let's not forget Kratos and Ares from the first game.
---> '''Ares:''' That night... I was trying to make you a great warrior!
---> '''Kratos:''' [[GoneHorriblyRight You succeeded.]] [''kills Ares'']
* Used straight twice in ''[[VideoGame/GuardianHeroes Advance Guardian Heroes]]'': Demon ended up manipulating Kanon via [[TheDragon Zur]] in order to force the rebirth of the Soul of Hero, [[EvilPlan so that he may absorb all of the souls of Kanon's army]] (including those of the now-mind-controlled Guardian Heroes), thus becoming the perfect warrior, and thus Demon's ultimate soldier. This later backfires when the main character (i.e., you) decide to fight him (or rather, Demon decides that "you'll probably resist"), and Demon's all-powerful body is destroyed. Demon understandably gets pretty cheesed off at Earth, and [[EarthShatteringKaboom tries to destroy it with a massive fireball]]. This leads to ''another'' incident of being hoisted by one's own petard when you and the rest of the spirits [[PlayingTennisWithTheBoss reflect the fireball back at Demon]].
** Hoisting enemies up with their own petard is also a part of ''Advance Guardian Heroes''' gameplay; an important technique involves [[BarrierWarrior blocking just as an enemy attack hits you]]. If it's a physical attack, enemies are simply stunned, but magic attacks get reflected back at them. Considering the [[NintendoHard difficulty level]] achievable by said game, countering quickly becomes a habit.
* In ''VideoGame/GunstarHeroes'', the evil Emperor takes the gems to awaken an ancient weapon of destruction, only for said weapon to hit him with an energy beam from the gems, then wipe him and his army out in the final cutscene.
* In ''VideoGame/HalfLife2'', the Hunters are rather weak to stuff shot with your Gravity Gun, and their main weapon shoots huge bullets. You can get an achievement by using the Gravity Gun to catch one of the bullets and shooting it at the Hunters. It is even possible to [[OneHitPolyKill kill several of them in one shot]]!
* In the first mission of ''{{VideoGame/Halo 2}}'', the Covenant [[SomebodySetUpUsTheBomb sets up you the bomb]] on Cairo Station, but MC turns the bomb against its setter-uppers.
** On a bigger scale, the Prophets end up losing the [[EnemyCivilWar civil war]] they instigate and are now likely extinct. Granted, there were mitigating factors, but still...
** MC and [[VoiceWithAnInternetConnection Cortana]] capture a Covenant flagship in the novel ''Halo: First Strike'' and use their own weapons against them.
** Gameplay-wise, this principle applies to plasma grenades. First rule of getting stuck: find the one who done it and go ActionBomb on 'em.
* In ''VideoGame/HeroesOfMightAndMagic'' ''VI'', [[spoiler:Uriel]] manipulates Anastasya into killing her own father (kicking off the plot of the game) with dark magic through a comb he gave her as a gift. Once Anastasya discovers the truth and masters her powers as a Necromancer, she uses their mental connection to attack his mind. [[spoiler:Since Uriel was currently engaged in battle with demons at the time, this leads directly to his death.]]
* At the end of ''VideoGame/{{Hitman}}: Codename 47'', you kill the MadScientist who created you.
** Also, In ''Contracts'' and ''Blood Money'' respectively, you can grab a gun that a wounded guard dropped on the floor or snatch it from a guard's hand, and kill them with it.
* In ''The VideoGame/HouseOfTheDead'', Dr. Curien is [[TurnedAgainstTheirMasters killed by his own ultimate creation]], the Magician.
* The true BigBad of the ''Videogame/InfinityBlade'' series is ultimately defeated by the one member of the race of immortals he created whose actions he could never predict. The guy even used weapons created by the Big Bad to beat him.
* In ''VideoGame/JadeEmpire'', the true BigBad, Master Li, is defeated by the last spirit monk (AKA the player character) whom he trained to overthrow the Emperor. His last words say it all:
--> '''Master Li:''' I'm a better teacher than I thought.
* In ''{{Killer7}}'', Curtis Blackburn is executed when Dan Smith sets off his evisceration machine, which guts him and hangs up his corpse like it did the little girls he was organ-farming.
* In ''KingdomHeartsBirthBySleep'', the Wicked Stepmother and Stepsisters attempt to [[{{MoralEventHorizon}} murder]] [[{{Disney/Cinderella}} Cinderella]] with an [[{{TheHeartless}} Unverse]] summoned from [[{{ThePowerOfHate}} their hatred towards her]]. [[spoiler: And their deaths were [[{{TheUnfought}} not triggered]] by a [[{{ActionGirl}} female]] [[{{MagicKnight}} Keyblade-welding wizard]]...]]
* Done in ''VideoGame/TheKingOfFighters '97'', in the Sacred Weapons Team ending. Orochi is on the ropes, and uses his power to force Iori into the Blood Riot, commanding him to kill Kyo and Chizuru. This backfires on him when Iori grabs Orochi instead, giving Kyo and Chizuru time to finish Orochi off.
** Done again in ''VideoGame/TheKingOfFighters XI''. After you defeat TheDragon, Shion, Magaki pulls Shion into a portal and emerges for the final battle. After his defeat, Magaki opens the portal again to escape... and Shion throws a spear into his chest from inside it.
* In ''VideoGame/KingsQuestVIHeirTodayGoneTomorrow'', [[spoiler:if you give the peppermint to Shamir in the final battle, he will get too [[ICantBelieveItsNotHeroin drunk on mints]] to concentrate on killing Alexander and accidentally use his own magic on himself, ending his own life]].
** Earlier, in ''VideoGame/KingsQuestIIIToHeirIsHuman'', Gwydion uses Manannan's own spellbook, wand, and lab against him, finally trapping him in the [[BalefulPolymorph body of a cat]] unable to use magic. The spell eventually robs the victim of sentience and shortens their life to that of a cat's. However, seeing as Manny was going to kill Gwydion [[YouHaveOutlivedYourUsefulness upon coming of age]], and had used that dirty trick against several of his enemies, feeding him the cat cookie was a great play of this trope.
* The entire ''{{VideoGame/Kirby}}'' franchise falls under this, since you tend to spend almost the entire game hoisting enemies by their own petards by spitting their projectiles back at them, or copying and using their attacks against them. Particularly notable is the Miracle Matter boss in ''Kirby 64'', a [[{{Shapeshifting}} transforming 20-sided die lookalike]] that turns the tables and mimics the abilities ''you've'' been copying and using throughout the game, but at the same time can only be damaged by the exact same ability he's using to attack you.
* There are a number of bosses in the later ''Franchise/TheLegendOfZelda'' games that can only be defeated by [[PlayingTennisWithTheBoss reflecting their own attacks back at them]]. One such battle with Ganon resembles a very deadly game of Pong.
** A little more shaky, but almost all bosses are only able to be defeated by the weapons and items hidden in their own dungeons.
** A clear-cut, non-battle example is [[EvilChancellor Chancellor]] [[ObviouslyEvil Cole]] from ''[[VideoGame/TheLegendOfZeldaSpiritTracks Spirit Tracks]]'', who meets this trope when [[spoiler:Malladus finds himself without a host body]]. So cracking the lid on the SealedEvilInACan [[EvilIsNotAToy might not have been such a hot idea.]] [[SarcasmMode Who knew?]]
* In ''VideoGame/MadWorld'', if a boss has a fancy weapon, chances are Jack is going to use that weapon as part of a gruesome and painful finishing move.
** Also, Leo started the Death Watch competition in order to test his father's new virus and vaccine, choosing this method of testing because he was fascinated by the games and considered them to be fun. He is eventually killed by the winner of the competition, by being cut with a chainsaw and pushed off of the giant floating stadium which was where the final match had taken place. The spoilered section is not because of the death, but because of the plot.
** Also, the Black Baron (the pimp that introduces the Bloodbath Challenges) is always used by his silent girlfriend to demonstrate the challenge's defining death trap. He comes back every time, of course. After the final boss fight with him, his girlfriend tosses a spike bat at his head, which Jack promptly picks up to bat the Baron flying into the dartboard used in the Man Darts challenges, just as he did to tons of mooks before.
* In ''VideoGame/MarioKart'', it is incredibly easy to hit yourself with a Green Shell. What's much harder is getting them to hit your opponents.
** It's also very easy to skid on your own Banana Peels, or hit your own Fake Item Boxes, especially if you've been around the track a couple of times and have forgotten where you've placed them.
** Also in MarioKart, what happens if [[TooDumbToLive you use a Blue Shell in first place]]. They hit anyone in first, including anyone firing them.
* In ''VideoGame/MassEffect2'', the Heretic faction of the Geth develops a virus which they intend to use on the main collective, intending to turn them all to Reaper-worship and war against the organics. Apart from simply destroying them, you can choose to turn the same virus on them, restoring them back to the collective.
** Garrus, while [[VigilanteMan Archangel]], apparently enjoyed doing this to criminals. Examples include sabotaging a saboteur's environment suit so he suffocated, smuggling a weapon in to kill a weapons smuggler, overdosing a drug dealer on his own product, and killing a quarian serial killer who murdered people with viruses by [[SugarWiki/FunnyMoments coughing at him]]. The only kill listed in his dossier that he didn't do this to was a slaver -- in that case he [[NoHoldsBarredBeatdown shot said slaver's fingers and toes off, put a bullet into every primary organ, beat with his rifle butt, and then lit on fire.]] Either this was [[ColdBloodedTorture extremely cruel]] or, if the target was a [[MadeOfIron Krogan]], [[DeathOfAThousandCuts barely enough]].
** On a more thematic note, the Thanix Cannon upgrade was based on Reaper technology. Said cannon is used during the Suicide Mission to take out the Collector ship that destroyed the original ''Normandy'', so you end up using Reaper weaponry against the Reapers' servants. For an added bit of thematic appropriateness, it's ''Garrus'' who gives you this upgrade.
** There's also the Collector Rifle, a reverse-engineered Reaper weapon, that ironically proves to be highly effective at killing Collectors. Particularly ironic if you chose to use this weapon to deliver the killing blow to [[spoiler:the ''Humanoid-Reaper'']].
** Henry Lawson [[TrulySingleParent created]] Miranda to be the ultimate human biotic. If she lives, Miranda uses her biotics to throw him out the window to his death when he lets go of [[spoiler:Oriana]].
** Cerberus, and the Illusive Man in particular, start screwing around with the mechanics of [[MindControl Indoctr]][[AndIMustScream ination]]. Seeing in previous works how insidious and easily awry such things can go, it is no surprise when [[spoiler:most of Cerberus -- ''including the Illusive Man himself'' -- instead get indoctrinated.]]
* In ''VideoGame/MaxPayne 3'', you get several chances to shoot grenades or rockets out of the air, killing the original user in the process.
* Most notably in ''VideoGame/MegaMan2'', wherein Metal Man can be OHKO'ed by his own weapon. For those wondering how you can fight Metal Man with his own weapon, towards the end of the game in Dr. Wily's castle, you [[BossRush re-encounter all of the Boss Robots again in rapid succession]].
** All of the Robot Masters in MegaMan3 are weak against their own weapons.
** Gate, BigBad of ''VideoGame/MegaManX 6'', was literally struck down by Sigma, who he himself resurrected. Whether or not Gate actually survived is never elaborated, as he was either rebuilt (and forgiven) by his former colleague Alia or not, and neither X6 nor any of its sequels tell us what happened..
*** Also applies in gameplay, as the only way to damage him is by destroying his projectiles, making the fragments they break into hit him.
** [[BigBad Dr. Weil]] of ''VideoGame/MegaManZero'' built a [[KillSat space satellite]] that will destroy any inhabitable area outside of his empire. Too bad he has a BastardUnderstudy that decided to take matters into his own hands. Yet Dr. Weil ''survives'', even though he's the ''prime target'' of the KillSat that was so powerful, it ''leveled an entire city''. When he merged with Ragnarok's core to destroy Zero, he gained its weaknesses as well as its strength. As a result, when the Satellite exploded, Weil perished in the explosion, but the reason all the crap in ''VideoGame/MegaManZX'' happened was a result of various factions trying to exploit Model W -- the remains of the Ragnarok satellite after it was demolished. No points for guessing who's been pulling the strings the whole time.
** In fact, every time you [[PowerCopying use a robot master's weapon]], it's an example of this trope towards Dr. Wily.
* In ''{{Metal Gear Solid 3|SnakeEater}}'' Colonel Volgin, who has the ability to course electricity through his body, gets killed by a bolt of lightning. It's lampshaded with Snake saying, "Fried by a bolt of lightning, a fitting end".
** It's made even more interesting in how, throughout the game, he commonly chants "Kuwabara, kuwabara", a Japanese expression meant to ward off lightning. In the final battle against him, however, when a storm rolls in, he not only neglects to say it, he outright MOCKS the lightning!
** In ''Videogame/MetalGearRisingRevengeance'', you can trick Sundowner's backup helicopters into shooting him with their weapons, and this tactic becomes more effective as the game's difficulty goes up. Desperado (the enemy organization) suffers an example as their actions to prove Raiden to be NotSoDifferent causes Raiden to become a even fiercer opponent against them.
** Also on second runs, you can use the unlocked secondary weapons made from the bosses you've beaten. It's actually a good tactic as Mistral's pole arm allows you to hit both her and the dwarf gekkos swarming you, Monsoon's sai when allowed to charge stuns him/ knocks him out of his invulnerability state, and Sundowner's Machetes have a charge move that allows them to bypass his explosive shields.
* In the ''VideoGame/MetroidPrime'' series, the titular Prime can only be destroyed by the very Phazon it produces. In the first game, Samus defeats it by standing in the pools of Phazon it excretes, thus activating the Hyper Beam. In the second, Samus has no compatible suit, but she can absorb motes of free-floating Phazon released by [[EvilCounterpart Dark Samus]] for the same effect. In the third, she's [[PowerIncontinence locked into Hypermode]] by the environment on Phaaze, so blasting Phazon at the enemy is pretty much all she can do. One wonders why a creature that was mutated and enhanced by, which ''produces'', and at one point became ''composed'' of the stuff can be hurt lethally by blasts of it.
** Because the substance is an incredible energy source that supercharges normal weapons. It also helps that it's been described as 'weaponized' phazon.
** At this point it's safe to say that the main purpose of Samus' hyper-adaptable armorsuit is to find a way of making any gadgetry she stumbles across into implausibly devastating armaments. The grapple-beam gets replaced with industrial lifting equipment in MetroidPrime, but by Metroid Prime 3, it can be adapted to suck the life out of enemies, with a side order of paralysis. As with many examples on this page, 'overloading' something with more of whatever it likes is a popular method of Petard-Hoisting, but Samus Aran could weaponize a Brita filter.
* In ''VideoGame/MightAndMagic IX'', the god of chaos, Njam the Meddler, has been driving the plot with the aim of entrapping Krohn, the chief god, in a shell of unbreakable frost. Guess where Njam ends up? Yup.
** In ''Might & Magic VIII'', the Regnan pirates are taking advantage of the chaos in a major way. You get to Regna by hijacking the submarine they had used to stealthily resupply one of their outposts. Once there, you sink a good chunk of the Regnan fleet while it is in harbour by means of a Regnan prototype super-cannon, intended (once they'd made a version that could fit on a ship) to ensure the Empire of the Endless Ocean's complete dominance over the seas.
** The VII artifact Splitter is liable to be this. It has the Explosive Impact enchantment. See that note on the top about splash damage? That counts for Explosive Impact in this game, there are no ways to become completely immune to fire damage, and Splitter is a ''melee'' weapon, so it does splash damage to your characters ''every time you use it to attack something''. The kicker is that artifacts and relics are supposed to differ by relics having drawbacks, but Explosive Impact counts as a boon...
* In ''VideoGame/MortalKombatDeadlyAlliance'', Frost, the pupil of [[AnIcePerson Sub-Zero]], only wishes to train with her master only so she could obtain the same power he has with his Amulet. However when she finally gets her hands on it, she gets consumed by her own ice abilities due to her lacking the same discipline Sub-Zero has..
* In ''VideoGame/TheNeverhood'', Klogg, after killing Willie Trombone with the giant cannon, gets this when he steps on the cannon's remote as he tries to stab Hoborg from behind, causing the cannon to fire wildly. Naturally, it hits Klogg in the face.
* In ''VideoGame/NeverwinterNights2: Mask of The Betrayer'', Myrkul is either given eternal rest by the spirit eater, or devoured by him, depending on the player's choice. The spirit eater is Myrkul's own creation, and for extra irony, the existence of the spirit eater was intended to give him immortality by abusing GodsNeedPrayerBadly and ensuring he always had at least one person remember him. This is lampshaded with his last words, "A final irony, even in this." (The player can {{take a third option}} ensuring he fades away, but where is the fun in that?)
* ''VideoGame/{{Osmos}}'' centers around controlling a primordial cell and absorbing other cells around yourself. The only way to move is by ejecting pieces of your own cell in opposite direction to where you’re going, propelling it through inertia. It is thus entirely possible to lose too much mass in this way and get absorbed by the very cell you were trying to move to.
** For extra irony, it’s also possible to have those tiny pieces absorbed by a cell that was smaller than you before, but becomes ''just'' larger than you are and proceeds to absorb you.
* The final boss in ''{{Painkiller}}'' is Lucifer, but he is a PuzzleBoss who cannot be directly shot to death. Instead, you have to deflect his thrown sword back to him.
* In ''VideoGame/PaperMarioTheThousandYearDoor'', there are enemies with shells so strong that the only way to hurt them is to throw one of them at the other.
* In ''{{VideoGame/Pikmin}} 2'', a new enemy called the Decorated Cannon Beetle shoots magnetic boulders, which consequently home in on the current captain. It's entirely possible to manipulate the boulders into hitting the Cannon Beetle or other enemies in the area. See MisguidedMissile.
* So many ways that can happen to you in ''VideoGames/PixelDungeon''
** Drinking unidentified potions. Drinking a Potion of Paralytic Gas turns you into helpless prey that will be killed by the first weak enemy that happens to wander in the viscinity. Drinking a Potion of Toxic Gas is usually not lethal if you run quick enough but will nevertheless let you at the center of a quickly expanding gas of deadly poison. There are no such saves for drinking a Potion of Liquid Fire.
** The same goes with scrolls, although most of them are harmless and just useless if read in the wrong context. Reading a Scroll of Challenge, however, is almost always a bad idea unless you really know what you're trying to do.
** The Wand of Lightning can hurt you if used at close range. The Wand of Firebolt is insanely powerful and effortlessly cutting through hordes of enemies while burning half the level is fun, but you will usually end up miscalculating the consequences and burning yourself to death. Potions of Liquid Flame and Blazing weapons are safer, but can occasionally have dramatic consequences if you are careless (for example, don't use them in a room full of vegetation).
* ''{{Franchise/Pokemon}}'' that can use Explosion and Selfdestruct. Funnier if the opponent uses Protect or is a Ghost-type.
** Any Ghost-type who uses Curse, which takes off half their total HP to [[ExactlyWhatItSaysOnTheTin curse its opponent]]...when they're already at half-health or lower. Or when their opponent's attack has just/is about to take off at least half their HP... [[TakingYouWithMe In both cases, it becomes an inversion of this trope if the first Pokémon previously used Destiny Bond]].
** Hi Jump Kick is a powerful move, but if it misses, [[EpicFail it hurts the user]]. Guess what happens if you miss with too little HP. Taken UpToEleven in Generation V, where the user takes ''one half of its maximum HP'' if it misses.
** An interesting case of hoisting by other's own petards are Dragon-type and Ghost-type Pokémon, which are weak to their own type. Giratina takes this UpToEleven, by being both a [[TakesOneToKillOne Dragon and a Ghost type.]]
** The ability Synchronize also transfers [[StandardStatusEffects Poison, Paralysis, and Burn]] if they were inflicted by that status themselves. A Pokémon with the ability Guts also has its attack boosted when it has a status effect, but competitively, it's mostly [[DisabilitySuperpower self-inflicted]].
** The move Magic Coat and the new Dream World ability Magic Bounce/Magic Mirror negates Status moves and entry hazards, then throws such effects ''back'' at the opponent. You can essentially make them {{sta|ndardStatusEffects}}tus cripple themselves and get their hazards on ''their'' side.
** Counterattack moves such as Counter, Mirror Coat, and Metal Burst (where the user deals back two/1.5 times the damage, respectively, that the user has sustained from the target's attack of the same turn) can invoke this trope when the target has used a particularly powerful offensive move, especially if the user is wearing a Focus Sash or possesses the Sturdy ability[[note]]both of which, provided that the Pokémon in question is at full health, allow a Pokémon to retain one HitPoint and survive what would normally be a one-hit knockout move[[/note]]. However, prior to [[VideoGame/PokemonBlackAndWhite Generation V]], Sturdy's effect was limited in that it only provided immunity to moves that were specifically designated in text as '''one-hit knockout''' (OHKO) moves (such as Fissure, Guillotine, and Sheer Cold), although ''no damage at all'' would be taken from said OHKO attacks.
** The moves Mirror Move, Copycat (the user uses the move last used by the target), and Snatch (the user steals the effects of the status move used by the target, usually a healing or stat-changing move) can occasionally lead to this trope. Better yet is the priority version of the first, Me First, which lets the user make the attack the opponent is about to make.
** [[VideoGame/PokemonXAndY Vivillon]] gets sole access to Powder, a [[ActionInitiative priority move]] that invokes this on anything trying to use a fire attack (normally [[KillItWithFire super-effective]] on Flying/Bug Vivillon) [[ManOnFire by making them immolate themselves with the flammable dust they just got coated with]].
** Need to take out [[OlympusMons Giratina]], but only have a [[LethalJokeCharacter lousy Klefki?]] Well, with Foul Play, a 95 Power Dark move that calculates damage based on the ''victim'''s Attack stat and buffs, you just might be able to.
* The BigBad of ''VideoGame/RadiantHistoria'' put a great deal of effort into [[spoiler:trying to enlist his nephew to help him destroy the world]]. Everything he did towards this end... did not go as planned. [[spoiler:Kidnapping and mind-wiping him got him away from his RoyallyScrewedUp family and let him live as his own person instead of as a LivingMacGuffin. Enlisting him in the army and later giving him subordinates led him to attract a group of TrueCompanions. Training him as a spy made him a good enough liar to fool said BigBad about how much he knew, giving him more time to act on his own]]. All of this wound up coming together so that [[spoiler:the person he ''wanted'' to make into a DarkMessiah turned into a true AllLovingHero instead]]. And in the end [[spoiler:he even sacrifices himself to save his nephew because he loved him too much to let him die.]]
* In the MMORPG ''VideoGame/RagnarokOnline'', the 3rd Job Class Warlock has a skill called Chain Lightning, which bounces off of enemies. It's quite powerful, but the thing is, if no enemies are left, the Chain Lightning will bounce back on ''you'', even in non PlayerVersusPlayer maps. Made funnier by the irony that the passive skill Soul Drain works on yourself if you get killed by your own Chain Lightning.
** Monks/Champions will never use Extremity Fist on Crusaders/Paladins pre-Renewal. Reflect Shield: 40% damage back to you: a 75000 damage of Extremity Fist will give the Champion 30000 to himself.
* ''VideoGame/{{Ratatouille}}'' had crabs hiding under saucepans, who would steal anything Remi carried in his paws. The way to dispatch them was to let them steal a bomb from you, thus finishing them off. A pity same trick didn’t work on crabs out in the open.
* ''VideoGame/RatchetAndClank'': At the end of the first game, the eponymous duo sends Drek onto his artificial planet and then destroy it with the laser he intended to destroy Veldin with.
* Happens many, many times in the ''Franchise/ResidentEvil'' series.
** Wesker is gored by the Tyrant he releases in ''Resident Evil'' (This is later {{retcon}}ned) to make it his plan.)
** Carter is killed by the Tyrant ''he'' releases in ''Resident Evil: Outbreak File #2''.
** The canon route for ''Resident Evil: Survivor'' has Vincent Goldman killed by the Tyrant ''he releases''.
** Ozwell Spencer is murdered by Wesker, the man he genetically engineered to make into a god.
* RomHack ''VideoGame/Rockman4MinusInfinity'' has the Toad Spell, which is two of the bosses' weakness. It turned the debris Dust Man inhaled into toads which damage him when he inhales it in. It also turned Toad Man, who also used it, into a [[OneHitKill easy to squish]] toad.
* In "[[WhamEpisode While Guthix Sleeps]]," ''VideoGame/RuneScape'''s biggest BigBad, the lich sorcerer Lucien, empowers himself with two godly artifacts: a staff and a stone. By the end of the sequel quest, "Ritual of the Mahjarrat," he's been ImpaledWithExtremePrejudice on the former by the {{MacGuffin Guardian}}s of the latter. "[[Film/BrideOfTheMonster He tampered in God's domain.]]"
* In the ''VideoGame/SamAndMaxFreelancePolice'' game episode "The Tomb of Sammun-Mak", Jurgen discovers he's under a vampire curse and outfits his room on the train with loads of anti-vampire gear. However, he also won't allow Sameth and Maximus to search his room for an important item. What they have to do is get Jurgen bitten by a vampire ans turned into one. This time, when Sameth and Maximus search his room, he's unable to stop them due to the anti-vampire gear he himself put there.
* In ''VideoGame/SDGundamCapsuleFighter'', there are two skills designed for maximum Hoisting of One's Petard for going after them: the [[Anime/MobileSuitGundamUnicorn Unicorn Gundam (NT-D Mode)]] and [[Anime/MobileSuitGundamSEEDDestiny the Akatsuki (Oowashi and Shiranui packs)]]. The Unicorn's NT-D Mode functions the same way the one in the anime does: by taking over your Funnels and throwing them right back at you. The Akatsuki has the skill "Yata no Kagami", which activates its beam-reflecting armor. Unlike the anime, this one reflects it back at ''you all the time''.
* In ''VideoGame/ShinMegamiTenseiStrangeJourney'', PrivateMilitaryContractor and MadScientist Captain Jack [[BodyHorror horrifically fuses]] the protagonist's ally Jimenez with a demon, resulting in an extremely strong and extremely violent HalfHumanHybrid, implied to be the first in a private army Jack aims to manufacture. A scene later, the selfsame hybrid [[GoneHorriblyRight rips the still-beating heart from Jack's chest]].
* Such deaths are ''Franchise/SilentHill's'' favorite way of doling out KarmicDeath. Among other things:
** In ''VideoGame/SilentHill1'', Dahlia gets fried by the very god she was trying to summon (though she was already mortally wounded by Kaufmann’s gun). Kaufman, if you saved him earlier, gets dragged to hell by Lisa, the nurse he has abused and who was killed because of the local apocalypse he has helped cause. Of course, if you don’t save him, then he’s killed by a monster from the very same apocalypse that wouldn’t have happened without his assistance.
** Done rather bizarrely in ''VideoGame/SilentHill2'', when the twin Pyramid Heads will commit suicide on their own weapons once James comes to terms with the truth.
** In ''VideoGame/SilentHill3'', Vincent insults Claudia at an inopportune moment and earns a knife in the back.
*** Emphasizing the above example, he ''[[TooDumbToLive turns his back]]'' toward Claudia as he tells Heather, who is on his other side, to kill Claudia, who has ''just'' hinted (and he seems to get it) that she is willing to kill him if he ''gets in her way'', which seems to ''guarantee'' she'd be willing to kill him if he actually tries to go so far as to ''kill'' her, which is exactly what he's indirectly trying to do through Heather. He so much brought about his own death that Claudia's action could almost be justified as self-defense, if we didn't know she probably had the situation well under control and didn't have to fear anything from Vincent's threat.
** And in ''VideoGame/SilentHill4'', Andrew [=DeSalvo=] is locked into a cell of the prison where he'd acted as its sadistic warden, and later brutally murdered by one of its prisoners, Walter Sullivan.
** Again in ''VideoGame/SilentHillHomecoming'', Judge Holloway is killed by her own drill. Through her jaw.
* In ''VideoGame/TheSimpsons'' arcade game, at the end of the battle with Smithers, he opens his cape to use a bomb, only to find that [[OhCrap all six fuses are already lit]].
* A few of the bosses in ''VideoGame/Sonic3AndKnuckles'' can't be damaged by Sonic and have to be defeated by turning their own weapons against them. A particularly glaring example is the machine Robotnik uses at the end of Lava Reef zone, as you don't even have to ''try'' to damage it; [[TacticalSuicideBoss it just repeatedly launches bombs that it seems to willfully redirect back into itself until it eventually explodes.]]
** In ''VideoGame/SonicGenerations'', when you fight Silver the Hedgehog, he tries to squish Sonic with a giant ball of debris when he's down to his last hit. When Sonic hits him, he's knocked into the ground and promptly ran over.
* In ''VideoGame/{{StarCraft II}}'': Wings of Liberty, Raynor was able to recover an old recording of Mengsk's " [[BastardlySpeech I will rule this sector" speech]]. Then broadcast it by using Mengsk's own media.
** Even better: The operation was supported by the AwesomeYetImpractical [[HumongousMecha Odin]] that Mengsk commissioned as a publicity stunt and was being piloted by Tychus Findley [[spoiler:whom Mengsk himself released and sent to Raynor as TheMole to assassinate Kerrigan.]]
** In ''{{VideoGame/StarCraft}}'', the Confederacy used the psi-emitters to lure the Zerg onto their enemies. Sons of Korhal later use those psi-emitters to draw the Zerg into attacking the Confederacy.
** The unofficial expansion/modpack {{Huncraft}} ends with Duran mocking the now infested Raynor, and detonating him. Before exploding, Raynor runs up to Duran and the explosion kills them both.
* In ''VideoGame/StarWarsBattlefront'', infantry trying to destroy a tank often throw grenades that stick to it. You can drive this tank up to them so that they're right next to their own grenade when it explodes – making this a ''literal'' case of Hoist by His Own Petard.
* * In ''VideoGame/StarWarsTheForceUnleashed II'' Baron Terko sets [[BiggerIsBetter the Gorog]] upon Rahm Kota and, later on, Starkiller, only to have the monster [[CollapsingLair smash the whole place up]] and [[FedtotheBeast eat said Baron]].
* Many of the bosses/villains in the ''Franchise/SuperMarioBros'' series. Indeed, you defeat Giga Lakitu and Megahammer by firing their projectiles back at them (Spinies and Bullet Bills respectively), as well as King Kaliente and Prince Pikante by sending back the coconuts fired in ''VideoGame/SuperMarioGalaxy'' and its sequel.
** Bowser's plots in those two games to create an "evil empire" are above his station and full of flaws, but the biggest monkey wrench to his plans is holding Princess Peach in his clutches, as he wants her to rule alongside him. While it used to help the trouble he caused in the classic Super Mario games remain intact as Princess Peach was the only one who could break the spells keeping her people under Bowser's sway, now it does nothing but increase Mario's chance of foiling Bowser's self-deluded, inevitably doomed plots.
** In the ''[[VideoGame/MarioAndLuigi Mario & Luigi]]'' series, many enemy attacks could be countered by sending their own attacks back to them.
** In ''[[VideoGame/LuigisMansion Luigi's Mansion]]'', one of the portrait ghosts, Slim Bankshot, is a billiards master. He'll shoot billiards around the room when you enter, and very rarely, one of them will hit him as he walks around the table. You're supposed to [[FreudWasRight suck up the balls]] and shoot them back at him, though, so it counts either way.
* In ''VideoGame/SuperRobotWars'', Wilhelm von Juergen committed a mistake by putting [[RobotGirl Lamia Loveless]] into the core of ODE. Not only does this slow down her assimilation because she's not a complete human, her willpower causes her to refuse being assimilated and pretty much wrecks the harmonious order of Bartolls (this is signified in the game with a very high morale drop). It is no wonder that it tried rectifying things by doing a PlayerPunch.
* In ''VideoGame/{{Syndicate 2012}}'', you must Breach the missiles Agent Ramon fires at you, turning them against him.
* * In ''VideoGame/SyphonFilter: Logan's Shadow'', [[BigBad Ghassan al-Bitar]] is killed by one of his own XZ-2 bombs that was sabotaged to malfunction.
* Toyed with in any game where one can rocket jump, ''VideoGame/TeamFortress2'' for example, where one is literally hoisted by one's own explosive weapon. Of course, if your health is too low, your corpse (or giblets) will be making the landing.
** Engineers can be killed by their own sentry guns if they get between the sentry and its target.
** Also, Pyros can airblast several of the projectiles in the game back at the person who shot them (or anybody else, for that matter). This comes with a Mini-[[CriticalHit Crit]] effect, making skilled Pyros exceptionally dangerous if you're a Soldier or Demoman. And in rare cases, a Sniper with a Huntsman.
* ''{{VideoGame/Tekken}}'': When Kazuya Mishima was a kid, his father, Heihachi, tossed him into a ravine so he would man up. He managed to survive and climb out after making a DealWithTheDevil, and defeated Heihachi in the first game, then proceeded to throw his father down the same ravine.
* The BigBad of ''VideoGame/ThiefIITheMetalAge'' dies in classic Bond-Villain fashion when Garrett recalls his poison-gas robots to his citadel. When the Citadel is sealed off, the robots and the gas are trapped inside, rather than rampaging through the local ecosystem while Karras stayed safe and sound.
* ''[[VideoGame/TronTwoPointOh Tron 2.0]]'': The TerribleTrio of {{Corrupt Corporate Executive}}s wanted to learn the secrets of digitization in order to shoot a bunch of mercenaries into {{Cyberspace}} and TakeOverTheWorld. They decide to test this by shooting in [[TheSmartGuy Alan]], and then having the Datawraiths use him for target practice. However, things rapidly go south from there, seeing as it reunites him with his son, they find a critical flaw in F-con's systems, and are able to de-bug Ma3a to get home. The trio's last ditch effort to digitize ''themselves'' in order to stop the Bradleys ends up with them undergoing BodyHorror and transforming into a twisted abomination that Jet defeats and Alan traps on a hard disk.
* ''VideoGame/VikingBattleForAsgard'': Freya would have probably lived and managed to avoid screwing over the entire pantheon if she had just lived up to her promise to free Skarin so he could earn entry into Valhalla.
* In ''{{VideoGame/Uplink}}'', this is an AwesomeButImpractical way to finish off the evil MegaCorp at the end of the game: the player can destroy the corporation's main computer using a virus developed by the very same corporation. (There are other, more BoringButPractical ways to accomplish the same goal, but hey, RuleOfCool.)
* In ''VideoGame/WildArms'', the demon Berserk lures the heroes into some ruins that happen to have a device that amplifies a demon's powers, with the intent of taking out the heroes with the increased power. Unfortunately for him, a rather trigger happy ally of the heroes happens to be in the same room as the device that controls the amplifier, and proceeds to break the crap out of it (despite not knowing what it does). The result: Berserk actually gets WEAKER, allowing the humans to defeat him. As is typical with this trope, he didn't even NEED the power boost; Berserk was more than strong enough to take them as he was, having toyed with them in the previous encounter(s) with him. Had he fought them elsewhere and seriously, he would've killed them easily.
* In ''VideoGame/WorldOfWarcraft'', one of the bosses in the Stratholm instance has an enrage timer that can be beaten ONLY by having a character pick up his dropped sword (which did much more damage than most weapons available at that level) and using it on him.
** Similarly, in the Tempest Keep version of the Kael'thas fight, the weapons dropped by the dead advisers are practically required to defeat him.
** In the Drakuru quest chain in Zul'Drak, you while disguised as a ghoul are sent to lure the chieftains of the Drakkari out so they can be captured and turned into magically-enhanced behemoths. During this quest he gives you a scepter that you use to control his abominations to kill the Drakkari mooks, which after you gain his trust you use to enter his weapons room where the chieftains are being mutated, and then to control one of them to battle him with.
** In the fight against Halfus Wyrmbreaker in the Bastion of Twilight, the players generally need to free the dragons he has imprisoned and defeat them after he bends them to his will in order to counter his abilities (for example, making the Proto-Behemoth's breath do less damage or making his Shadow Novas take long enough to cast that they can be interrupted), and give him a damage buff that will enable you to beat his enrage timer.
** Several achievements require you to trick bosses into killing their own adds with their area of effect abilities.
** [[BigBad Deathwing]] is slain by the Dragon Soul, the ArtifactOfDoom ''he'' created long ago to control the other Dragonflights.
** In ''Mists of Pandaria's'' Mogu'shan Palace dungeon, the party has the opportunity to turn Xin the Weaponmaster's own weapon system on him.
* In the ''VideoGame/{{X}}-Universe'' games, [[DestructibleProjectiles missiles detonate if shot]]. NEVER launch any missile that has an area of effect feature in it when you're being fired upon unless you want to lose a lot of shields to your own stupidity. This is especially true if you're carrying Firestorm or Hammerhead missiles, considering how vastly powerful and slow their warheads are. Unless you're flying a frigate-, carrier-, or destroyer-class ship, you WILL die in the ensuing shockwave if your missile gets shot at. Amusingly, you can do this to an enemy ship's missile too when they're ready to launch. Enemy bombers are especially prone to this since their missiles do more damage than the ship has shields and armor put together, and missiles are the only offensive weapons they have.

----