History NightmareFuel / DigimonSurvive

* In a rather unusual twist for Digimon as a whole, if you expect the villains to just toy with human children or Digimon or commit lesser crimes like [[Anime/DigimonFrontier razing villages for burgers]] or [[Anime/DigimonGhostGame turning people into easily reversible dolls or zombies]], ''don't even think about it''. Every other major antagonist encountered outright attempts murder, and the killings have apparently been ongoing for ''decades''. That's right. Whatever happened to Takuma and co. is not a one-off case -- it's not uncommon for children who entered the local Shrine or tunnel to end up being {{Human Sacrifice}}s. and the only survivors who went back to their world in one piece were those who had partner monsters.

** You can pick up a few Perceived Memories stories in the Moral and Harmonious Routes where random children get lost in the other world, thought they saw their mom only to be dragged off to the fog and dying, with their Kemonogami partner screaming in agony and dying (at which the description on the monster's POV is not pleasant). They're eerily reminiscent of the moments leading to Ryo's death.

* The Harmonious Route Perceived Memories story where a girl was thrown into the other world as a HumanSacrifice to conjure the Kemonogami to save her country from some nasty famine. It doesn't sound that bad until the last page, where the fog finds its way to her and she sees what seems to be her mom. In reality it's an illusion and the girl is dragged into the fog and dies, her partner monster vanishing afterwards. It's not only a ShaggyDogStory where the girl fails to call any Kemonogami into the real world, but it's also eerily reminiscent of the moments leading to Ryo's death.

** Even worse, we find out the sister was not dead. Rather, she was trapped for ''thousands of years'' within the other world equal to 50 years of real life time and her soul was stolen, rendering her catatonic and unable to say anything bar one-liners and is only kept in check by her Renamon taking the form of her brother. If the loss of her soul didn't render her catatonic, then being essentially trapped for thousands of years in some alien world with no way out will.

* The backstab from Piedmon then leads to Aoi dark biomerging with Labramon to become Plutomon (a Digimon with ties to the Olympos XII, i.e. the Illiad server's equivalent to the ''Royal Knights''), who kills Piedmon in retaliation. Now that Plutomon's killed Piedmon, time to rejoice, right? Wrong! Now Aoi is so far off and insane that she intends to bring forth harmony and cooperation by absorbing her friends and everyone else, then remaking the two worlds in her own image. Watching Aoi, whose motherly personality has been a constant presence since the start of the game, become so utterly twisted is as heart-wrenching as it is nightmarish. Oh, and unlike Shuuji's Wendigomon prior (and other Dark Evolutions for that regard), Plutomon is a ''completely sapient'' manifestation of Aoi's grief-induced insanity who carries out her AssimilationPlot willingly. Her body might had been turned into a barely recognizable monster, but her mind is pretty much Aoi's and not those of a rampaging beast. It's one thing for Lopmon to turn into a self-aware monster who can't control his body, but it's another for a kind and caring person to become so dead, twisted, and broken that she biomerges into an insane being hellbent on enforcing harmony by absorbing other people and killing anyone who dares challenge her.

* The backstab from Piedmon then leads to Aoi biomerging with Labramon to become Plutomon (a Digimon with ties to the Olympos XII, i.e. the Illiad server's equivalent to the ''Royal Knights''), who kills Piedmon in retaliation. Now that Plutomon's killed Piedmon, time to rejoice, right? Wrong! Now Aoi is so far off and insane that she intends to bring forth harmony and cooperation by absorbing her friends and everyone else, then remaking the two worlds in her own image. Watching Aoi, whose motherly personality has been a constant presence since the start of the game, become so utterly twisted is as heart-wrenching as it is nightmarish.
* Plutomon is considered a ''Dark Evolution'' of Labramon and Aoi. Usually you'll expect a mindless monstrosity for a Dark Evolution, but much like [[Anime/DigimonGhostGame GulusGammamon]], Plutomon is a fully intelligent and sentient manifestation of Aoi's grief-induced insanity who carries out her AssimilationPlot ''willingly''. It's one thing for Lopmon to turn into a self-aware monster who can't control his body, but it's another for a kind and caring person to become so dead, twisted, and broken that she biomerges into an insane being hellbent on enforcing harmony by absorbing other people and killing anyone who dares challenge her.\\\
It's also implied that Plutomon is actually ''the true Mega form'' of Aoi's partner rather than a standard Dark Evolution, hence the sheer natural sapience of Aoi-Plutomon rather than a distorted, insane monster like other Dark Evolutions. A Free Plutomon evolves from a Free Gabumon, with Dobermon and Cerberusmon, two of Labramon's evolved forms, in between. Meanwhile, Free Anubismon evolves from ''Free Renamon''. Plutomon is the result of Aoi succumbing to her negative feelings of being forcefully pushed into doing unreasonable work for her peers, and the Anubismon that Labramon evolves into "naturally" is actually a manifestation of her embracing said role rather than just forcing herself through it. Her Kemonogami partner didn't actually Dark Evolve but go in the exact way she is intended to go, but with Aoi being in the pilot seat.

* The backstab from Piedmon then leads to Aoi biomerging with Labramon to become Plutomon (a Digimon with ties to the Olympos XII, i.e. the Illiad server's equivalent to the ''Royal Knights''), who kills Piedmon in retaliation. Now that Plutomon's killed Piedmon, time to rejoice, right? Wrong! Now Aoi is so far off and insane that she intends to bring forth harmony and cooperation by absorbing her friends and everyone else, then remaking the Digital World and human world in her own image. Watching Aoi, whose motherly personality has been a constant presence since the start of the game, become so utterly twisted is as heart-wrenching as it is nightmarish.

* The tutorial section of the prologue is pretty grim. As soon as you boot up a new game, you're treated with some ominous background music, followed by what appears to be a pair of siblings running for their dear lives from a strange creature that can't be called a Digimon. They use their own Kemonogami, a Renamon and a Gabumon, to fight against it, only for them to not even so land a scratch on it, and the sister bails her brother to escape back to the real world by opening a portal. She was then dragged off by a series of hands and was seemingly never heard of again. It's a stark contrast compared to the more welcoming beginning stages in Habu "Habumon" Kazumasa's other works, and evokes a sense of helplessness rather than a hopeful and uplifting tone.

* The tutorial section of the prologue is pretty grim. As soon as you boot up a new game, you're treated with some ominous background music, followed by what appears to be a pair of siblings running for their dear lifes from a strange creature that can't be called a Digimon. They use their own Kemonogami, a Renamon and a Gabumon to fight against it, only to fail to scratch the foe, and the sister allows the brother to escape back to the real world by opening a portal, was seemingly dragged to nowhere by a series of hands and was nowhere to be heard of again. It's a stark contrast compared to the more welcoming beginning stages in Habu "Habumon" Kazumasa's other works, and evokes a sense of helplessness rather than a hopeful and uplifting tone.

* The tutorial section of the prologue is pretty grim. As soon as you boot up a new game, you're treated with some ominous background music, followed by what appears to be a pair of siblings running for their dear lifes from a strange creature that can't be called a Digimon. They use their own Kemonogami to fight against it, only to fail to scratch the foe, and the sister allows the brother to escape back to the real world by opening a portal, was seemingly dragged to nowhere by a series of hands and was nowhere to be heard of again. It's a stark contrast compared to the more welcoming beginning stages in Habu "Habumon" Kazumasa's other works, and evokes a sense of helplessness rather than a hopeful and uplifting tone.
** Even worse, we find out the sister was not dead. Rather, she was trapped for ''thousands of years'' within the other world equal to 50 years of real life time and her soul was stolen, rendering her catatonic and unable to say anything bar one-liners and is only kept in check by an impostor taking the form of her brother. If the loss of her soul didn't render her catatonic, then being essentially trapped for thousands of years in some alien world with no way out will.

* The tutorial section of the prologue is pretty grim. As soon as you boot up a new game, you're treated with some ominous background music, followed by what appears to be a pair of siblings running for their dear lifes from a strange creature that can't be called a Digimon. They use their own Kemonogami to fight against it, only to fail to scratch the foe, and the sister allows the brother to escape by opening a portal, was seemingly dragged to nowhere by a series of hands and was nowhere to be heard of again. It's a stark contrast compared to the more welcoming beginning stages in Habu "Habumon" Kazumasa's other works, and evokes a sense of helplessness rather than a hopeful and uplifting tone.

* The tutorial section of the prologue is pretty grim. As soon as you boot up a new game, you're treated with some ominous background music, followed by what appears to be a pair of siblings running for their dear lifes from a strange creature that can't be called a Digimon. They use their own Kemonogami to fight against it, only to fail to scratch the foe, and the sister allows the brother to escape and was seemingly dragged to nowhere by a series of hands and was nowhere to be heard of again. It's a stark contrast compared to the more welcoming beginning stages in Habu "Habumon" Kazumasa's other works, and evokes a sense of helplessness rather than a hopeful and uplifting tone.

* The tutorial section of the prologue is pretty grim. As soon as you boot up a new game, you're treated with some ominous background music, followed by what appears to be a pair of siblings running for their dear lifes from a strange creature that can't be called a Digimon. They use their own Kemonogami to fight against it, only to fail to scratch the foe, and the sister allows the brother to escape and was seemingly dragged to nowhere by a series of hands and was nowhere to be heard of again. It's a stark contrast compared to the more welcoming beginning stages in other of Habu "Habumon" Kazumasa's works, and evokes a sense of helplessness unlike the others who are generally at least a bit more hopeful about it.

* The tutorial section of the prologue is pretty grim. As soon as you boot up a new game, you're treated with some ominous background music, followed by what appears to be a pair of siblings running for their dear lifes from a strange creature that can't be called a Digimon. They use their own Kemonogami to fight against it, only to fail to scratch the foe, and the sister allows the brother to escape and was seemingly dragged to nowhere by a series of hands and was nowhere to be heard of again. It's a stark contrast compared to the more welcoming beginning stages in other Habumon's works, and evokes a sense of helplessness unlike the others who are generally at least a bit more hopeful about it.

* Miu's backstory, as revealed in the Harmony route, is that she had someone stalking her back when she still lived in the city. To add in more {{Squick}}, Miu is only 11 years old. The stalker only stopped after Kaito noticed and beat him within an inch of his life, making Kaito's overprotectiveness over Miu suddenly a lot more understandable. Not helping matters is that said stalker was a StalkerWithACrush that tried to lie and [[PaedoHunt claim that he and Miu were a couple]]. There's no wonder Kaito is an overprotective big bro to Miu -- he's ''horrified''.

* The Truthful Route's Chapter 12 is LighterAndSofter in heavy contrast to what's usually in this section of the game and one of the very few sections of the game that is devoid of any sort of real danger, but it quickly degenerates into horror that night when Ryo, Minoru, and Saki spot a ghost running around, who Takuma finds out personally was the young man who was Zhuqiaomon's partner. That night, outright paranormal activities appear all over the school, manifesting as clickable objects titled "???", and the party's partner monsters bar Agumon seem to vanish. Turns out there's no real danger and it was just Suzaku Boy trying to reach them, but Zhuqiaomon himself isn't that merciful. Not only does he hate humans over Suzaku Boy's failure to kill the Master, viewing it as a betrayal, he also brainwashes all of the group's partner monsters, making them hate humans like him. They get snapped out of it quickly, but having to see Falcomon and Agumon speaking in a tone different from usual while threatening to kill their owners is pretty horrifying.

* The Truthful Route's Chapter 12 is a LighterAndSofter section in heavy contrast to what's usually in this section of the game and one of the very few sections of the game that is devoid of any sort of real danger, but it quickly degenerates into horror that night when Ryo, Minoru, and Saki spot a ghost running around, who Takuma finds out personally was the young man who was Zhuqiaomon's partner. That night, outright paranormal activities appear all over the school, manifesting as clickable objects titled "???", and the party's partner monsters bar Agumon seem to vanish. Turns out there's no real danger and it was just Suzaku Boy trying to reach them, but Zhuqiaomon himself isn't that merciful. Not only does he hate humans over Suzaku Boy's failure to kill the Master, viewing it as a betrayal, he also brainwashes all of the group's partner monsters, making them hate humans like him. They get snapped out of it quickly, but having to see Falcomon and Agumon speaking in a tone different from usual while threatening to kill their owners is pretty horrifying.

* The first half of the Truthful Route's Chapter 12 is a LighterAndSofter section in heavy contrast to what's usually in this section of the game, but it quickly degenerates into horror that night when Ryo, Minoru, and Saki spot a ghost running around, who Takuma finds out personally was the young man who was Zhuqiaomon's partner. That night, outright paranormal activities appear all over the school, manifesting as clickable objects titled "???", and the party's partner monsters bar Agumon seem to vanish. Turns out it was just Suzaku Boy trying to reach them, but Zhuqiaomon himself isn't that merciful. Not only does he hate humans over Suzaku Boy's failure to kill the Master, viewing it as a betrayal, he also brainwashes all of the group's partner monsters, making them hate humans like him. They get snapped out of it quickly, but having to see Falcomon and Agumon speaking in a tone different from usual while threatening to kill their owners is pretty horrifying.

* ''Any time'' [[https://www.youtube.com/watch?v=ZgI4i-8FAkA Track 36]] plays during the game. The incredibly ominous orchestral, droning music makes it very clear that something is ''wrong'' with the situation, and anything can go wrong if the player makes a step in the wrong direction. Even when there isn't any risk of danger, this theme can still play, which can easily give the player a sense of dread, a sense that anywhere they go may not be a safe haven for Takuma and his friends...

* The backstab from Piedmon then leads to Aoi biomerging with Labramon to become Plutomon (a Digimon with ties to the Olympos XII, i.e. the Illiad server's equivalent to the ''Royal Knights''), who kills Piedmon in retaliation. Now that Plutomon's killed Piedmon, time to rejoice, right? Wrong! Now Aoi is so far off and insane that she intends to bring forth harmony and corporation by absorbing her friends and everyone else, then remaking the Digital World and human world in her own image. Watching Aoi, whose motherly personality has been a constant presence since the start of the game, become so utterly twisted is as heart-wrenching as it is nightmarish.

* Speaking of spiders, there is one type of constant Free Battle map which consists of an Arukenimon and varying numbers of Dokugumon. The worst Nightmare Fuel offender, however, is a map at the start of each route's part 11 with an Arukenimon and six Dokugumon, where two of the Dokugumon spawn ''right behind one of your deployment areas''. In the Truthful Route, several of these Dokugumon can even have a higher level than the Chapter boss (which is level 84; the Dokugumon on that map can spawn at level 89).

* Possessed Miyuki does her best to imitate ''Film/TheExorcist''. She has very unsettling yellow eyes and makes very deranged expressions. Worse is that not only does her voice become a ContraltoOfDanger with extra echo effects, at several points the possessed body speaks in ''the Master's voice'', a raspy old man's voice, and her title card becomes "The Master". She also acts nothing like Miyuki, being more like the Master acting through her body, attacking and killing innocent Digimon in the amusement park and impaling Jijimon through a black tendril. Jijimon only gets killed because he shields Takuma from the Master's attack -- if he hadn't interfered, it would have been ''Takuma'' who died.