History ChekhovsGun / VideoGames

* In ''VideoGame/BatmanArkhamKnight'', the Arkham Knight has Batman trapped in a room with a hostage, and he explains to his men that the huge bat on Batman's chest is a decoy, and the point where the Batsuit is the most heavily-armored. Considering that this target is over Batman's center of mass, this makes sense. Later on, Batman and James Gordon have a standoff with Scarecrow on a rooftop [[spoiler: where the latter presents Gordon with a SadisticChoice. His daughter's life, or Batman's. Gordon shoots Batman right in the bat symbol, causing the latter to fake his death, and then when Scarecrow [[ILied drops Barbara to her death]], [[DivingSave Batman swoops in and catches her]]]].

* ''VideoGame/{{Onmyoji|2016}}'':
** There's the [[spoiler: (broken) [[PublicDomainArtifact Sword of Kusanagi]], which just looks like an unimportant MacGuffin when [[MrExposition Oguna]] prattles on about it, but later turns out to be an important artifact needed to slay the Yamata-no-orochi.]]

** The USS Missouri in ''VideoGame/MetalGearSolid4''. Insignificantly introduced early in the game as a real-life [=WW2=] battleship that had been recommissioned as a training vessel, it later becomes the only ship in the US Navy to survive the BigBad's plan to disable all the weapons in the world (due to not being linked to the "System" which controls all of them), and ends up carrying and supporting the main character in their assault on his floating fortress.

** In the prologue of ''VideoGame/MetalGearSolid2'', which centers on a US Marine Corps. Metal Gear model, a brief mention is made of a Metal Gear project led by the US Navy. [[spoiler:Much later in the plot, the Navy's Metal Gear makes an appearance and turns out to be a significant part of the plot]].
** From the beginning of ''VideoGame/MetalGearSolid3'', Naked Snake has a mask in his inventory which seems to serve no real purpose. Speaking to Major Zero reveals that "its creator pitched a fit" when the mission it was intended for was scrapped, and that Snake was given the mask (instead of it being thrown away) because it might come in useful. Later in the game, [[spoiler:the mask becomes an integral part of infiltrating Groznyj Grad to rescue Sokolov, as Snake has to neutralize and disguise himself as Major Ivan Raikov. Coincidentally, the mask was originally made for a mission wherein a CIA operative would have to disguise themselves as the same man, thus it bears an uncanny resemblance to Raikov. So uncanny that even though the disguise fails, it fails because the mask is so damn convincing that Raikov's lover, [[DepravedBisexual Colonel Volgin]] is convinced by it and only realizes his mistake after he ''grabs Snake's genitals. Twice'']]. The same mask can also be used [[spoiler:during the fight with Colonel Volgin to trick him into thinking that Snake is Raikov, which throws him off guard and allows Snake to get a few hits in. After tricking Volgin this way, his attacks become more frequent and damaging]].

* In ''Daryl Gates' VideoGame/PoliceQuest: Open Season'', most of the evidence items acquired throughout the first four days are used to solve various puzzles on the final day.

* At the start of ''VideoGame/BrokenSword'',George is shocked with a hand buzzer by the owner of a joke shop, who then laughs and gives it to him as a gift. When George tries to pull this prank on anyone else in the game, they all refuse to shake his hand for one reason or another. It's only when an assassin has George helpless at gunpoint at the top of a mountain that George gets a chance to use it, shocking the assassin and dramatically leaping to safety while he fumbles with his gun.

* ''[[VideoGame/DotsHome Dot's Home]]'': The second floor of Grandma Mavis' house has a leak in the ceiling. [[spoiler:Due to inadequate housing, this goes unrepaired for the entire game, and when Dot [[FieldTripToThePast returns from 2010]] at the end of the game, the basement gets flooded while Carlos is still inside.]]

* ''VideoGame/{{Onmyoji}}'':

* ''VideoGame/SonicTheHedgehog'':

** There cannot be two of the same god in any timeline. Dark Raiden is erased when Past Raiden appears. [[spoiler: Raiden, realizing that Shinnok's amulet will corrupt him, chose to turn Liu Kang into a god at the cost of himself, while simultaneously erasing Reverent Kiu Lang and throwing a spanner into Kronika's plans.]]

* In ''Characters/TheWalkingDeadVideoGame'' by ''Creator/TelltaleGames'', Clementine has a Walkie-Talkie her [[spoiler:dead]] parents gave to her. It's established early that the device is broken and Clementine is only keeping it as a personal memento. [[spoiler: However, at the end of episode 3, [[TheReveal it's revealed]] that the Walkie-Talkie was working all this time and that some mysterious man has been communicating secretly with her - promising to reunite Clementine with her parents. The man, himself, would prove to be a ChekhovsGunman based on a major choice Lee makes regarding an abandoned car full of supplies.]]

* ''VideoGame/ResidentEvil5'' manages to use this. Sheva picks up a syringe of serum from an attaché case. Both Sheva and Chris learn that the serum is actually one used to keep their enemy's superhuman powers in check, and that too much of a dose can hurt him.
* In ''VideoGame/ResidentEvilCodeVeronica'', the password to activate the SelfDestructMechanism at the end is... Veronica.

* ''VideoGame/ClubPenguin'' has 11 PSA missions. In the 6th one, the player drops their phone and it's picked up by [[BigBad Herbert]]. In mission 9, the lost phone is used to track Herbert, and also used to spy on him.
** In the 10th mission, [[TheDitz Rookie]] is tricked into giving Herbert his spy phone. In the 11th mission, [[spoiler: Herbert uses both the player's lost spy phone and the one that Rookie gave him to blow up the PSA HQ with popcorn.]]

* VideoGame/ClubPenguin has 11 PSA missions. In the 6th one, the player drops their phone and it's picked up by [[BigBad Herbert]]. In mission 9, the lost phone is used to track Herbert, and also used to spy on him.
** In the 10th mission, [[TheDitz Rookie]] gives Herbert his spy phone. In the 11th mission, [[spoiler: Herbert uses both the player's lost spy phone and the one that Rookie gave him to blow up the PSA HQ with popcorn.]]

** In the 10th mission, [[TheDitz Rookie]] gives Herbert his spy phone. In the 11th mission, Herbert uses both the player's lost spy phone and the one that Rookie gave him to blow up the PSA HQ with popcorn.

** In the 10th mission, Rookie gives Herbert his spy phone. In the 11th mission, Herbert uses both the player's lost spy phone and the one that Rookie gave him to blow up the PSA HQ with popcorn.

* VideoGame/ClubPenguin has 11 PSA missions. In the 6th one, the player drops their phone and it's picked up by [[BearsAreBadNews Herbert]]. In mission 9, the lost phone is used to track Herbert, and also used to spy on him.

* VideoGame/ClubPenguin has 11 PSA missions. In the 6th one, the player drops their phone and it's picked up by [BearsAreBadNews Herbert]. In mission 9, the lost phone is used to track Herbert, and also used to spy on him.

* In ''VideoGame/CustomRobo'', there is a bit dialog at the beginning of the game where the main character receives a watch from his dad. [[spoiler:It later is revealed that the watch was part of a memory erasure device which is revealed to be the only way to stop the Big Bad.]]