Doom 3 and expansion i think not i just walked around with god mode and no clip and anyways the monsters allways come out of predictable places and scream before they attack you
doom 1, when I was young it used to creep me out, all dark and creepy. I remember I freaked out when I saw a wall with weird texture, when I came closer I realized it was wall covered with some screaming faces, and then I looked back in the game and that flying eye monster was just in front of me lolz, now I'm laughing because I was like OMG almost pissed myself, probably because of doom1 and 2 I have fear of huge open surfaces :|
definately dead space i have like every achiev for that game. SO CREEPY MAN! THE MARKER IS EVIL! I DONT SLEEP AT NIGHT AND THE PILLS ARENT WORKING MAN!
I never really played any real scary games, but the scariest game i played was probaly 'Resident Evil 4'. I love that game, but it's kinda-sorta a scary game.