I concur with the reccomendation of Silent Hill. Excellently disturbing game.
Musically, the creepiest songs I’ve ever heard are from a UK band called “Esoteric.” In particular, the song “Stygian Narcosis” really gets to me during its first three or four minutes. “Sinistrous” is another good, creepy one.
I suggest attending a lemon party or perhaps seeing a girl in the tub or maybe taking a goat to see the christmas islands. If that doesn’t creep you out then you’re made of sterner stuff than I would have imagined.
Hopefully that was obfuscated enough.
Listen to the Beatles’ White album or ABBEY ROAD while reading HELTER SKELTER. Trust me.