7. Outlast

Gameplay trailer shows the first look inside Mount Massive Asylum.

I hope you wore brown pants today.

Still one of the most terrifying games of a journalist who sneaks into an asylum, and spends every moment after that regretting his decision. Outlast makes you fear what's around every corner or in every dark room. While at the same time making you run blindly into these areas with someone right on your heels.

Your only guiding light is a handy camera with night vision. This game is not without repetition, but being powerless to defend yourself will keep your adrenaline pumping.

Once you're caught, game over.