Eternal Darkness For Gamecube.
Best game ever. Its like Resident Evil, but a little different, and much much better.
You have this thing called an insanity meter. If it gets to low, weird things happened. The first time, The screen flipped off like my power went out. I was so pissed, because I was really far, and hadn't saved the game. Another time, this bug was made to look like an actual bug was running across the screen. I had the lights out. It scared the crap out of me, and I spend 10 minutes looking for that bug in the room before I realized what it was. The one that got me best though was when the sound went out, and it said "Mute" up in the corner. I thought I had sat on the remote and muted it, and was pissed when it wouldn't turn off.
Those few extras, as well as awesome gameplay/storyline, make this game great!