Slenderman Must Die: Sanatorium 2021

1,511
ratings
8.9
Slenderman Must Die: Sanatorium 2021 (Chapter 1) is a Slenderman survival game to find the hidden 8 papers in a scary sanatorium.

Release Date

March 2014 (Android). January 2021 (WebGL).

Developer

Poison Games made Slenderman Must Die: Sanatorium 2021.

Platforms

  • Web browser
  • Android

Walkthrough

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: Industrial Waste
Slenderman Must Die: Silent Streets
Slenderman Must Die: Dead Space
Slenderman Must Die: Abandoned Graveyard
Slenderman Must Die: Survivors
Slenderman Must Die: Underground Bunker
Advertisement
Show Less
Advertisement
Advertisement
Advertisement
Advertisement
Slenderman Must Die: Underground Bunker
Slenderman Must Die: Abandoned Graveyard
Slenderman Must Die: Silent Streets
Slenderman Must Die: Dead Space
Slenderman Must Die: Survivors
Murder The Homicidal Liu - Into Damnation
C-Virus Game: Outbreak
Jeff The Killer: Lost in the Nightmare
Residence of Evil
Shoot Your Nightmare: The Beginning
Monster Christmas Terror
Portal Of Doom: Undead Rising
While We Sleep: Slendrina Is Here
Jeff the Killer vs Slendrina
Wendigo: The Evil That Devours
Shoot Your Nightmare: Halloween Special
Slendrina Must Die: The Cellar
Slendrina Must Die: The School
Jeff's Revenge
Let's Kill Jane The Killer: Don't Go to Sleep
Shoot Your Nightmare: Space Isolation
Slendrina Must Die: The Forest
Jeff the Killer: Horrendous Smile
Realistic Zombie Survival Warfare
Deadly Space Stories: A.I. Gone Bad
Slendrina Must Die: The Asylum
Amnesia: True Subway Horror
Five Nights at Old Toy Factory 2020
Slendrina Must Die: The House
Silent Insanity P.T. - Psychological Trauma
Office Horror Story
Zombie Survival Ultimate
Lost Alone: Zombie Land
Zombie Hazard
Sudden Attack
Slender Clown: Be Afraid of It!
Forsake the Rake
Pixel Apocalypse: Infection Begin
Unusual Rain
Slenderman VS Freddy The Fazbear
Masked Forces 3: Zombie Survival
Zombie Apocalypse: Survival WarZ
Shell Shockers
All of Zhem: Escape Zombie Island
Heavy Combat: Zombies
Dead Mine CG: Prologue
Secret Laboratory
Zombie Arena 3D Survival
Zombie Attack
Bullet Force
Pixel Gun Apocalypse 2
Block Pixel Gun Apocalypse 3
Xtreme Paintball Wars
Zombies.io
Zombs Royale (ZombsRoyale.io)
ZombieCraft.io
Battle S.W.A.T vs Mercenary
Bat Hero: Immortal Legend Crime Fighter
Build and Crush
Zumbie Blocky Land
Zombie Siege Outbreak
Border of Insanity
Masked Forces: Halloween Survival
Stickman Zombie 3D