Halo when you first meet the flood and when you find out that when you kill them sometimes they are not really dead just pretending

I can think of really only three games that really freaked me out: Eternal Darkness, F.E.A.R., and Left 4 Dead.

There are others games that have made me tense, but these are the only three games I can think of off the top of my head that really did something to me.

Eternal Darkness - Aside from the freaky sanity system (which freaked me out a few times too), this was one of the first games I played with surround sound. Playing this game with all the lights off really did it for me. I remember playing this with my old roommate in the room and we were freaked the fuck out. There was a point we actually thought there was someone on the balcony.

F.E.A.R. - This one just had some good atmosphere. I played this one with no lights and noise canceling head phones which just made for a good experience (actually work one of the guys who worked on it too ).

Left 4 Dead - I almost crapped my pants when the zombies broke through the wall in the hospital while waiting for the elevator.

F.E.A.R was fucking scary, I only touch that game for online multiplayer(PC) when I'm bored, and I'm not done with the single player yet. Too fucking scared. I didn't scream out loud, but I did in the inside.

F.E.A.R?
I didin't find that scary...Ofc when you though something scary would happen,and then nothing happend..Well...That wasn't scary.
That girl was scary sometimes...
Oh and yea,stealth enemies at office...

The moments I have screamed in fear have always been when a message similar to this appears on the screen:

"The data in save file 1 has been corrupted. Retry?"

EDIT: After thinking about this for a while I realised there actually was a game where I seriously got scared, probably because I was so young at the time.  My skin would just crawl when I could hear the dragon breathing in "Advanced Dungeons and Dragons" for the Intellivision.

I want to add.. The Piano from SM64 and a handful of monsters from Doom II. I was a kid at the time, of course.

None......

Haze, I was fearful of how bad games can actually be.

No games save for Ocarina of Time and Resident Evil 4.

OoT was so dang scary. I remember when the skeletons appeared on Hyrule Field when it turned night for the first time. That was freaky. And a couple of the bosses (the on in the great deku tree, and shadow gannon, not the final fight).

Re4 because I really, really hate scary games, and the fact that I cannot aim in FPS games, meaning I ran out of ammo all the time (fighting dogs that jump at you, when you have a knife that is retarded isn't that fun).

Edit:

The post below mine made me remember something.

I downloaded the Bioshock demo, and took the elevator up. BAM something hits the elevator, or whatever I am in, and a zombie like thingy jumps at the door, and looks in. CTRL + Alt + Del. Uninstall.

That was dang freaky.

Bioshock....>_>
I was walking around I go down a corner I see this statue sitting in a chair don't think about it much then I see an upgrade for my guns. I turn and the statue was right next to me about to strike I just dropped the controller and fell of my chair....