History SanitySlippage / VideoGames

** Yosukesaurus in the second movie is generally friendly, but he felt powerless about not being able to lead the Herbivores into resisting the Carnivores. When he led the other Herbivores into a "paradise" which was revealed to be a dead end clearing that just makes them Carnivore fodder, all of the Herbivores voted to ostracize him and kick him out. He doesn't want to and they force him to attack the party because humans wrote the book depicting "paradise." He gets mindbroken piece by piece and turns into a carnivorous dinosaur himself and mercilessly attacks the party.

** While Hikari was nothing more than a depressed wreck at the start of the game, [[spoiler:she used to be quite sane when she was young; Even when she was wrongly blamed for poisoning the class rabbit by her primary school teacher or ostracized by her secondary school friends for having a different opinion on how Miyuki should be treated, she can still talk to her father with a straight face. However, after her relatives denied her worth, all hell breaks loose; She just collapsed in a fit of depression and self-loathing and closed herself off in her room so she would be "normal" under the emotional premise that everyone hated her for being different. Her father then accidentally triggered her TraumaButton by asking her a question in the exact phrasing as everyone said before they flip out as a concern for her mental health. Needless to say, her father was her only beacon of hope, so she ''snapped'' and became the NervousWreck encountered in the theater.]]

** While Hikari was nothing more than a depressed wreck at the start of the game, [[spoiler:she used to be quite sane when she was young; Even when she was wrongly blamed for poisoning the class rabbit by her primary school teacher or ostracized by her secondary school friends for having a different opinion on how Miyuki should be treated, she can still talk to her father with a straight face. However, after her relatives denied her worth, all hell breaks loose; She just collapsed in a fit of depression and self-loathing and closed herself off in her room so she would be "normal" under the emotional premise that everyone hated her for being different. He then accidentally triggered her TraumaButton by asking her a question in the exact phrasing as everyone said before they flip out as a concern for her mental health. Needless to say, her father was her only beacon of hope, so she ''snapped'' and became the NervousWreck encountered in the theater.]]

** While Hikari was nothing more than a depressed wreck at the start of the game, [[spoiler:she used to be quite sane when she was young; Even when she was wrongly blamed for poisoning the class rabbit by her primary school teacher or ostracized by her secondary school friends for having a different opinion on how Miyuki should be treated, she can still talk to her father with a straight face. However, after her relatives denied her worth, all hell breaks loose; She just collapsed in a fit of depression and self-loathing and closed herself off in her room so she would be "normal" under the emotional premise that everyone hated her for her being different. He then accidentally triggered her TraumaButton by asking her a question in the exact phrasing as everyone said before they flip out as a concern for her mental health. Needless to say, her father was her only beacon of hope, so she ''snapped'' and became the NervousWreck encountered in the theater.]]

* Yosukesaurus in ''VideoGame/PersonaQ2NewCinemaLabyrinth'' is generally friendly, but he felt powerless about not being able to lead the Herbivores into resisting the Carnivores. When he led the other Herbivores into a "paradise" which was revealed to be a dead end clearing that just makes them Carnivore fodder, all of the Herbivores voted to ostracize him and kick him out. He doesn't want to and they force him to attack the party because humans wrote the book depicting "paradise." He gets mindbroken piece by piece and turns into a carnivorous dinosaur himself and mercilessly attacks the party.
* While Hikari in ''VideoGame/PersonaQ2NewCinemaLabyrinth'' was nothing more than a depressed wreck at the start of the game, [[spoiler:she used to be quite sane when she was young; Even when she was wrongly blamed for poisoning the class rabbit by her primary school teacher or ostracized by her secondary school friends for having a different opinion on how Miyuki should be treated, she can still talk to her father with a straight face. However, after her relatives denied her worth, all hell breaks loose; She just collapsed in a fit of depression and self-loathing and closed herself off in her room so she would be "normal" under the emotional premise that everyone hated her for her being different. He then accidentally triggered her TraumaButton by asking her a question in the exact phrasing as everyone said before they flip out as a concern for her mental health. Needless to say, her father was her only beacon of hope, so she ''snapped'' and became the NervousWreck encountered in the theater.]]

* While Hikari in ''VideoGame/PersonaQ2NewCinemaLabyrinth'' was nothing more than a depressed wreck at the start of the game, [[spoiler:she used to be quite sane when she was young; Even when she was wrongly blamed for poisoning the class rabbit by her primary school teacher or ostracized by her secondary school friends for having a different opinion on how Miyuki should be treated, she can still talk to her father with a straight face. However, after her relatives denied her worth, all hell breaks loose; She just collapsed in a fit of depression and self-loathing and closed herself off in her room so she would be "normal" under the emotional premise that everyone hated her for her father raising her ineffectively. Then he accidentally triggered her TraumaButton by asking her a question in the exact phrasing as everyone said before they flip out as a concern for her mental health. Needless to say, her sanity just ''collapsed'' and she became the NervousWreck encountered in the theater.]]

* While Hikari in ''VideoGame/PersonaQ2NewCinemaLabyrinth'' was nothing more than a depressed wreck at the start of the game, [[spoiler:she used to be quite sane when she was young; Even when she was wrongly blamed for poisoning the class rabbit by her primary school teacher or ostracized by her secondary school friends for having a different opinion on how Miyuki should be treated, she can still talk to her father with a straight face. However, after her relatives denied her worth, all hell breaks loose; She just collapsed in a fit of depression and self-loathing and closed herself off in her room so she would be "normal" under the emotional premise that everyone hated her for her father raising her ineffectively. Then her father accidentally triggered her TraumaButton by asking her a question in the exact phrasing as everyone said before they flip out as a concern for her mental health. Needless to say, her sanity just ''collapsed'' and she became the NervousWreck encountered in the theater.]]

* While the Hikari in-game was nothing more than a depressed wreck at the start of the game, [[spoiler:she used to be quite sane when she was young; Even when she was wrongly blamed for poisoning the class rabbit by her primary school teacher or ostracized by her secondary school friends for having a different opinion on how Miyuki should be treated, she can still talk to her father with a straight face. However, after her relatives denied her worth, all hell breaks loose; She just collapsed in a fit of depression and self-loathing and closed herself off in her room so she would be "normal" under the emotional premise that everyone hated her for her father raising her ineffectively. Then her father accidentally triggered her TraumaButton by asking her a question in the exact phrasing as everyone said before they flip out as a concern for her mental health. Needless to say, her sanity just ''collapsed'' and she became the depressed wreck we saw at the start of the game.]]

* ''VideoGame/YggdraUnion'' has [[spoiler:Nessiah]], who is quite clearly struggling to stay sane by the end of the game. Considering the [[TraumaCongaLine particularly brutal]] BreakTheCutie he was subjected to in the past (and [[WhoWantsToLiveForever how long he's had to live with the trauma]]), his Sanity Slippage is pretty understandable.

** Players can firstb e introduced to Grant Cohen through his secret Chapter 3 audio log, in which he is complaining about Joey's spending habits and some big expensive secret project of his. In Chapter 4, we find [[RoomFullOfCrazy his office]].

* ''VideoGame/BendyAndTheInkMachine:'' The players are introduced to voice actress Susie Campbell with her Chapter 2 audio log, in which she sounds like a NiceGal excited about landing the role of Alice Angel. However, subsequent audio logs record [[spoiler: her getting LostInCharacter sometime before she became the murderous version of Alice Angel: In Chapter 3, she likes it when Joey calls her Alice. In Chapter 4, she calls ''herself'' Alice and accuses Joey of trying to double-cross an angel.]]

* ''VideoGame/BendyAndTheInkMachine:'' According to WordOfGod, Sammy Lawrence started as a "decent" person. However, well before the start of the game, he was already a bit weird, as recorded in the audio logs, and by the time Henry falls into the music department, he's started worshipping Bendy - a cartoon character whose show he used to write music for! In addition to [[BodyHorror having been turned into an ink being,]] Sammy has undergone a MadnessMakeover by dressing like Boris and [[MalevolentMaskedMen wearing a mask of Bendy's face.]] He also chants about sacrificing sheep.

* ''VideoGame/BendyAndTheInkMachine:'' Sammy Lawrence was already a bit weird, as recorded in the audio logs, but by the time Henry falls into the music department, he's started worshipping Bendy - a cartoon character whose show he used to write music for! In addition to [[BodyHorror having been turned into an ink being,]] Sammy has undergone a MadnessMakeover by dressing like Boris and wearing a mask of Bendy's face. He also chants about sacrificing sheep.

** On Solomon Island, anyone who visits Atlantic Island Park begins to experience this: workers experienced disturbing impulses and stimuli while building the place, and as ''The Park'' explains, one was so distorted by his time there that he refused to let his girlfriend see him until he'd recovered from whatever he'd experienced there - [[spoiler: and it may have even resulted in him having committed suicide.]] Meanwhile, a park worker playing the part of Chad the Chipmunk began to degenerate from alcoholism to utter obsession with his mascot suit, taking it home with him, declining to clean it, and even refusing to take it off; he also developed a taste for ice-carving - and finished up his time at the park by carving a teenager's eyeball out. Most notably of all, Lorraine begins to experience this herself as she delves deeper into the abandoned park, her love for Callum being gradually twisted out of shape into a demented, possessive obsession that arcs wildly between unhealthily doting on him and despising him with all her heart. [[spoiler: It so happens that the reason for this is because the park's creator Nathaniel Winter was actually [[EmotionEater harvesting the emotions]] of the visitors - specifically their joy and happiness.]]

* Route C in ''VideoGame/NierAutomata'' has a major case of this for [[spoiler: 9S. In-between learning the AwfulTruth about [=YoRHa=] and the Council of Humanity, the destruction of the Bunker and the corruption of his fellow [=YoRHa=] units, and witnessing 2B's MercyKill at A2's hands, he slowly goes insane with grief and rage as he resolves to the destroy the machine lifeforms once and for all and kill A2. By the time the Terminals start screwing with him by attacking him with copies of 2B, his response is to go LaughingMad and start hacking them apart.]]

** A Romance Sim will try to dance with a mop...
** A Popularity Sim will start talking to a puppet made out of a plastic cup...
** A Family Sim will cuddle a flour sack with a face drawn on it like it was a real baby...
** A Knowledge Sim will start talking to [[Film/CastAway a volleyball with a face painted on it]] wearing a mortarboard...

*** and when it bottoms out completely they will collapse on the ground babbling, and a therapist (who is only visible when that sim is selected) will appear and talk to them for a while, moving their aspiration meter back up one level.

* ''Videogame/TheOldRepublic'':

* [[spoiler: Wheatley]] suffers from this in ''VideoGame/Portal2''. After dethroning [=GLaDOS=] and taking over the facility for [[spoiler: him]]self, [[spoiler: he]]'s slowly corrupted by the mainframe, becoming downright sadistic and lashing out in uncharacteristic rage at seemingly random intervals. This culminates in the FinalBoss fight against [[spoiler: him]]. [[spoiler: He starts off rather calmly, engaging in BossBanter and acting extremely intimidating. After bursting the Conversion Gel pipe, he gets ''pissed'', which is when his sanity starts to slip. But it's only when you attach the first and second core to him that he ''really'' starts to lose it. He starts spouting paranoid delusions, using the fact that you didn't catch him at the beginning of the game to accuse you and [=GLaDOS=] of only pretending to be enemies to use him, and that the events of the entire game were all a ploy. But the thing that makes this so heartbreaking is the fact that while he says that, ''he's crying'']].
-->'''[[spoiler: Wheatley]]:''' ''(voice breaking)'' Oh, it's all becoming clear to me now! Find some dupe to break you out of cryosleep! Give him a sob story about escaping to the surface! ''Squeeze'' him for information on how to find a Portal Gun! Then, when he's no more use to you, he has a little "accident"! Doesn't he?! "Falls" off his management rail?! ''DOESN'T HE?!''

* This is arguably the entire plot arc for Atris in ''[[VideoGame/KnightsOfTheOldRepublic KotOR II]]''.
** And possibly for Bastila in the first game, though the final stages happened offscreen.
** In a somewhat stranger example, [[spoiler:Revan]] in ''The Old Republic''. [[spoiler:After three hundred years of being [[FateWorseThanDeath trapped in stasis]] and {{mind rape}}d by the Sith Emperor, (all the while subtly influencing him NOT to attack the Republic)]] he's broken out by a strike team..... Only to [[spoiler:immediately go to one of the remaining Star Forges in the galaxy (you know, the EldritchLocation]] he spent the better part of the first game trying to destroy?) and [[spoiler:attempts to build a robotic army that will wipe out all those in the galaxy that contain even a trace of the Sith gene in them-incidentally 97.8% of the Imperial population.]] Not that, given his situation, this isn't ''slightly'' justified.