| Developer | Poison Games |
| Rating | 9.3 (675 votes) |
| Released | January 2021 |
| Technology | HTML5 (Unity WebGL) |
| Platform | Browser (desktop-only), App Store(Android) |
Slenderman Must Die: Sanatorium 2021 is a horror survival game that puts you inside an abandoned sanatorium filled with fear, mystery, and darkness. Your mission is to search for 8 hidden pages while being hunted by the terrifying Slenderman.
Armed with limited weapons and surrounded by creepy hallways, you must stay alert every corner could be your last. The environment is cold, silent, and full of jump scares that keep you moving with caution. One wrong step, and Slenderman will appear without warning.
The game blends survival horror, first-person action, and exploration, giving players a spine-chilling experience with realistic sound effects and atmospheric graphics. Be brave, collect all pages, and make sure Slenderman doesn’t catch you.
Features
If you love horror games that test your courage, Slenderman Must Die: Sanatorium 2021 is a thrilling challenge you must face…if you dare.
Developer
Poison Games made Slenderman Must Die: Sanatorium 2021.
Controls
- W A S D to walk around
- Mouse to look around
- Left Mouse Button to shoot
- Right Mouse Button to aim
- Mouse wheel to switch weapons
- R to reload
- F to pickup items
- Left Shift to run
- Left CTRL to crouch
- X to prone
- Space bar to jump
More Games In This Series
Slenderman Must Die: Silent Streets
Slenderman Must Die: Graveyard
Slenderman Must Die: Underground Bunker