Just played a little indie horror game on Steam called "The Cabin Factory." Took me maybe an hour to get through, and only cost three or four bucks. You just inspect cabins on a conveyor belt to see if they are haunted. Which, I know it sounds weird, but the game does a decent enough job of making it make sense.

It's so, so good. I just finished it and I'm still sitting here feeling very tense. It started me quite a few times during my short time with it. Was a ton of fun, and I'm gonna make some friends play while I watch. At its price, I'm gonna say that if anyone reading this wants a short but genuinely creepy horror game on the cheap... Check this out. ^.^