In celebration of Halloween, let's all recommend good games to change your underwear to. The most scared I have ever been while playing a video game was my first time playing Silent Hill on the Playstation. I was too scared to beat the game, in fact. Granted, I was 8 or 9 at the time, and we only rented it, but I could only manage to play it for 2 days before I stopped playing altogether. More recently, Dead Space was pretty creepy. It never reached the level of terror I felt while playing Silent Hill the first time, but it did a great job creating a claustrophobic, tense atmosphere, and it made you feel truly alone. It was also really damn fun. I also just downloaded S.T.A.L.K.E.R.: Shadow of Chernobyl off of Steam for $5 (this deal is going until November 2, take advantage while you can!). I haven't played it yet, but I have heard it's pretty creepy.