Amnesia: The Dark Descent, a first person survival horror. A game about immersion, discovery and living through a nightmare. An experience that will chill you to the core.
If you like dark atmospheres and intense plots full of suspense and psycological terror, such as those found in games like Silent Hill, Diablo 1,or S.T.A.L.K.E.R SoC, then this is the game for you.