True survival horror games are rare these days. Games like Dead Space and the most recent Resident Evil titles can be scary but tend to be just as focused on action as they are on atmosphere. To be truly scared you need to be vulnerable, and that’s exactly how the player in Amnesia: The Dark Descent is. The game has a lot more in common with point-and-click adventures than shooters. The focus is on the puzzles, exploiting the neat physics engine, combining items to apply to the environment, and hiding/running from enemies.
If you enjoy horror games, and have found recent ones too action focused, give Amnesia: The Dark Descent a try.