P.T.

So this game puts you into the perspective of the guy you play as. You walk around and look around (as the guy you play as) this enables you to explore a house called "PT" (Personal Territory) which is where the name of the game comes into play. When exploring said house, you come across horrors that are so scary I can't even describe them. Only thing that is as scary as this is VSauces video "Why Are Things Creepy?"