**Slenderman Must Die: Sanatorium 2021 - Chapter 1** is a thrilling horror survival game where you must navigate a terrifying, abandoned sanatorium to uncover eight hidden documents. As you explore eerie halls and dark corners, you’ll face terrifying encounters with Slenderman, who is determined to stop you. Your mission: Find all the pages before it’s too late, or become his next victim. Can you survive the nightmare? Play now and experience the ultimate challenge of fear and strategy!
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