Description Slenderman\'s Shadow is a horror adventure game based on the indie game Slender.Slenderman\'s Shadow is a horror adventure game based on the indie game Slender. Avoid Slenderman and collect all the notes to win the game. The action takes place in an abandoned sanatorium where Slenderman will follow your every move and try to stop you from finishing your quest. Avoid him at any cost or feel his wrath.