I think there are VERY few games on the PC(and especially on consoles) that are truly scary. I think the only game that actuelly scared me, was System Shock 2. Although, AvP2 made me flinch a few times.
System Shock 2
Before anyone says that they wouldn't like it(1st person shooter view), keep in mind that it is actually a hybrid(mixture) of different game types. I remember one time I was playing(5-8 years ago), I turned out the lights in the room(to add to the effect), and my brother tapped me on the shoulder. I turned around(in the game), and tryed to shoot whatever was behind me! Three seconds later, I was laughing at myself(because of how big an idiot I was). You actually get unlimited lives in the game, so the fact that I was worried about what was behind every corner proves how scary it is(or how big a coward I am). Another thing I should mention, it's multiplayer, so you could play online with your friends(although it's not near as scary that way). Most people that have played it, would agree with me.
Phantasmagoria
Except for a few parts, I wouldn't call this a scary game.
Has anyone here played the 2nd one, and was it made by Roberta Williams?
Haunted Mansion
Old Atari(before Nintendo) game. You play as a guy that's locked inside a haunted mansion(obvious, huh?). He has to collect the pieces of a key, to get out. Fun game, but I wouldn't call it scary either. Exciting,maybe, but not scary.
I don't know about any newer game with this name.
Alone in the Dark 1-4
Everyone here seems to be concerned with the graphics, and being killed. Except for the 4th one, all used software rendering. I've played 1 and 4, I think both are fun, but I was never scared by them. I agree, about dying too much.
Jack the Ripper
The new game, bad.
I Have No Mouth and I Must Scream
I think I've played the demo. If it's the game I think it is, you'd probably be better of buying the the story(tape or book). Although I think this MIGHT be considered scary, I don't like the fighting parts.
Aliens versus Predator 1/2
Yep, scary.
A first person shooter, if you don't like the movies, you won't like the game(and vice-versa). If you don't get at least "creeped out" by the movies, try the game. Like the movie, almost everyone seems to die by the end of the game. I only consider the Marine missions scary. Also I don't think the Primal Rage(or whatever it's called) expansion pack is scary.
Ghost Dogs of Moon Lake
I've never played the game, but I know people that have. This game I think would be considered scary, in a few parts. Not many, and only to some people(not me).
Done
