Alan Wake was an interesting game, I think it had a good gameplay concept, awesome story, can't bring myself to say I loved the game but I played it all the way through and there was definitely something there. And it scared the hell out of me a lot. Can't beat Dead Space though. Honorable mentions: Don't Starve and Dark Souls, neither of which are actually horror games but the tension is so high because everything in the game just wants to f**k and kill you.