It's Halloween again, and though you may be too old to go trick-or-treating, you can still celebrate at home. And playing a terrifying video game is much better than bobbing for apples.

There's something special about being truly frightened by a video game. It's something primal; we crave the adrenaline that comes from fear, and in this modern world of safety railings and monotony we escape into entertainment to find it. If it makes us crap our pants, that's an OK price to pay.

The horror genre of games has come a long way, but some of the scariest games ever made are more than a decade old. From Resident Evil's zombie-filled corridors to the insanity-inducing horrors of Amnesia, these are Complex's ten scariest games of all time.