Ao Oni/YMMV

• Fridge Horror: To escape the mansion, you have to do elaborate puzzles that rely on items you find. At the end of the game, you see a man has gone into the mansion. He won't be able to get out because you have completed all the puzzles, so he won't be able to get the items he needs to get. Not to mention you have now let loose 3 other monsters in the Mansion...
  • • Does that mean that all the doors are unlocked and that he only has to avoid the monsters and explore a little in order to find an exit?
  • There's also the large group of monsters you find in the basement, all of which mysteriously vanish after you've managed to get away from the two that were chasing you. And on top of that, you find cages, jail cells, and straight-up dungeons in certain areas of the mansion. Just what were those used for?
• Memetic Molester: The Ao Oni.
• Memetic Mutation: IT'S RAPING TIME!
  • Though it only occurs in one version, Takuro's Death by Headchomp is referenced a lot in fanwork and parodies.
• Nightmare Face: The faces of the monsters. Oh God, the faces of the monsters. It's especially horrible in version 6 when you have to hide in a jail cell from the monster chasing you. The game then goes completely silent and cuts to a close up of its face through the bars, at which point it grabs the bars and begins violently shaking them, and the whole time it's just staring at you with its unblinking eyes, the pupils completely dilated, lines across its face, and a large, sagging frown with big fangs. Then again...
• Nightmare Fuel
• Nightmare Retardant:
  • Some people consider the blue monster's face to be adorable, goofy, or derpy rather than scary; it's even been referred to as blue Barack Obama. Or a japanese smurf. Maybe it's a suffocating Matsumoto?
  • South Park mode!
  • Hindu Squato!
  • Ao Oni's credibility as something scary is ruined.
• Paranoia Fuel: The Onis breathing. In version 6, the heavy breathing noises of the Oni are heard throughout the Dark basement. With only a lighter, you cannot see the whole screen, and the monster could pop up from any direction.
• Uncanny Valley: The monsters. See Nightmare Face.