Studying all day, but I remembered this and I didn't pimp it before, so I wanna do it now before I forget about it again.
99 Rooms is an interesting and (to me) creepy flash game. Sorta. It's more like an interactive art puzzle with creepy elements. Basically, you have to go through the 99 Rooms, and try to get out of each of them. You usually have to click something (a door, a light switch, a button, etc.), but it's NOT obvious until you find it in the scene, which leads to searching each room pretty thoroughly. There's a bunch of scares in here, and I know I jumped more than once. Since I'm kind
here's walkthroughs and reviews for the game.
There's better (scarier) games out there like
Exmortis -- which I haven't played because I'm a wuss -- but the art in 99 Rooms is top-notch. Make sure to have you sound on, since the music and sound effects are a big part of the ambiance. But if you're a wuss like me, DON'T PLAY THIS GAME AT NIGHT IN THE DARK.
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EDIT...
A better walkthrough is here if you really get stuck. Though, it's not that hard.