Condemned - omg mannequins please fuck off. The first time i played it i was in a room with 6 other people my age, none of us could play it.
Resident Evil 1 - The dodgy camera angles make for horrible frightening 'what the fuck can i hear?' type scenarios.
resident evil re:make - those fucking zombies that run at you? OH.MY.PANTS.
Scary games are my favourite. what else do i need to play?