heheh i've not really played any proper scary games (i'm one of those deprived kids without a console, see), but i've heard that Fatal Frame and Silent Hill are scary as heck..
although surprisingly, the one game that gave me the willies was Half-Life 1.... back in '99, when I played it with the lights off, with headphones (when I was supposed to be in bed), the beginning freaked me out cos u'd hear random screams in the distance, and the *&^! zombies lurking around. sorry Gordon Freeman hahah.
love scary movies tho. especially the Japanese and Korean ones.