Now let's get something out of the way here, I don't get easily spooked. Horror movies never scare me, but once in a blood moon, a horror game will turn this 25 year old male into a five year old school girl. The last game that did that for me, was Amnesia: The Dark Descent. For starters, the atmosphere is excellent. Very eerie and unsettling yet in a subtle, uncomfortable way. The feeling of dread when being chased by the monster is unparalleled, and your stress levels will go through the roof during sequences such as the water level. I've played many horror games since then, but either I've grown as a person and less scares me, or that game is still unmatched.