Horror will always remain fascinating, in the sense that the formula is so deceptively straightforward: just scare people senseless - how hard could that possibly be? Turn the lights down, toss in some zombies/demons/ghosts/pig-men (you really don't want to know where your food comes from sometimes) and voila! You've got yourself a bonafide Horror Classic. Except it isn't that easy, is it? You can't strip the genre down to the bare essentials and throw them into a cauldron for the perfect brew. No, it's the marriage between atmosphere and pace that really gives horror its legs. At the end of the day, monsters and madman are mere props that when used improperly, can sabotage the entire experience and reduce a menagerie of terror into a glorified house of horrors. Some games manage to strike that delicate balance, while others cross-pollinate to spectacular results; some are scarier than others, some are bloodier and some are just more fun. There's no genre with broader variations than horror, and there's no better showcase than the last decade.