Prison - Version 1.9 3D horror game. Collect 8 photos and escape from a prison while avoiding the Slenderman. Staring at the Slender Man will drain your sanity - losing your sanity will have negative effects and will likely get you killed. Sprinting will decrease your maximum stamina, so sprint only when required. Throughout the world, there is no one who is not afraid of the Sender Man. He has no face, he wears a black suit, and he abducts people. Do not look at him, or he will catch you! Try to win, do not fall into the hands of the Slender Man!