Slenderman Must Die: Sanatorium 2021 is a horror themed, first-person shooter game developed by Poison Games. Set in the middle of an abandoned hospital, the game puts you in the shoes of a protagonist on a mission to scavenge for resources, fend off monsters, and survive the night. With a combination of horror and shooting genres, game creates an intense and thrilling atmosphere that will keep you on your toes throughout the game.
