The PC's most WTF games

Developer: Frictional Games
Publisher: Lexicon Entertainment /Paradox Interactive

“It helps that everyone in the game is insane,” says writer Tom Jubert of Penumbra’s terror. This episodic survival horror game plays with some interesting interaction mechanics, but its main draw is how unnerving it is. When one section sees the level structure re-arrange behind your back, you know you’re playing something that’s hell-bent on confusing and intimidating you at every turn.