Nameless protagonists seem to be a theme in horror games, and Lone Survivor is no exception. In this game, you take the role of a young man who lives in a post-apocalyptic future. The protagonist is guided by hallucinations around the map in order to locate specific items and resources used to progress further into the game.
The main character's sanity plays a large role -- and in order to combat your frail mental state, sleep and proper nourishment are required. There is a trade-off to taking care of yourself, though, as certain items may be located in a more easily if the protagonist is hallucinating.
Don't let Lone Survivor's 2D art style fool you -- this game can deliver chills with the best of them.