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



<h3>Release Date</h3>
March 2014 (Android). January 2021 (WebGL).

<h3>Developer</h3>
Poison Games made Slenderman Must Die: Sanatorium 2021.

<h3>Platforms</h3>
<ul>
<li>Web browser</li>
  <li>Android</li>
</ul>


Slenderman Must Die: Silent Streets

Slenderman Must Die: Graveyard

Slenderman Must Die: Underground Bunker

Shooting

Horror

Zombie

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

Slenderman Must Die: Sanatorium 2021

This is a wonderful zombie game that you can enjoy here on CrazyGames.com in your browser, for free. You can play this game unblocked on CrazyGames. The game includes detailed keyboard and mouse controls . That way, it is easy to see how to play the game. Slenderman Must Die: Sanatorium 2021 is made with HTML5 technology to run in all modern browsers. You can play this game in full-screen to avoid any distractions. The game is available online and as as an Android game. Did you like playing this shooting game? Then check out our other <a href='https://www.crazygames.com/t/zombie' target='_blank'>zombie games</a> or <a href='https://www.crazygames.com/game/noob-and-zombies' target='_blank'>Noob and Zombies</a> and <a href='https://www.crazygames.com/game/build-and-crush' target='_blank'>Build and Crush</a>.

Authentication - CrazyGames

Authentication

Your account has been temporarly disabled because you didn’t verify your email address 48 hours after your registration. Press the below button to send a new email to confirm your email address. After confirming your email address you’ll have access to your account again.

Please verify your email address!

Your current browser does not support this login method. Switch to a different browser.

Enter the email address of your CrazyGames account, and we will send you an email to reset your password.

We've sent you an email to verify your account. Check your SPAM folder if it doesn't arrive in your inbox.

Your account has been created!

Set your username

CrazyGames - Online Games

Controller detected

We want your feedback!

Play free online games at CrazyGames, the best place to play high-quality browser games. We add new games every day. Have fun!

Logo CrazyGames.com

A platform update is coming in January 2025, log in to secure your games’ progress.

Don't lose your progress! 

You’re about to start the process of deleting your CrazyGames account. Your gaming history and progress will be deleted forever. Any in-game purchases made using this account will be lost.

Delete your CrazyGames account

Enter a new email and check your mailbox right after to confirm the change. If you don’t confirm it, your account will keep the current email address.

Want to change your password? Enter the current one first, then the new one twice (just to be sure you don’t make any mistake!)

Change your password

This information is shared exclusively with CrazyGames and will not be visible on your profile.

Create an account to add games to your favorites

Add games to your favorites by clicking on the ♡ icon on a game page.

My favorite games

Create an account to see all your liked games

My games

You’re about to delete all your progress for this game and start from scratch.

Delete progress

Game progress

Tired of your current username, huh? No problem, pick a new one here:

This content isn’t available at the moment

Ad blocker detected

You need to be logged in to send feedback. Please log in or create a free CrazyGames account.

Log in to share your feedback

Report a not yet published game

We've already received your message and are currently reviewing it. To ensure a fair and timely response for everyone, we kindly ask that you wait until tomorrow before submitting additional feedback.

It will help us improve the platform.

Thank you for your feedback

About CrazyGames

Feedback

Find a game

Select a game

This will help the developer improve the game and make it even more awesome!

Share the following link with your friends

Invite your friends

Mutual friends

You must log in to your CrazyGames account to report a user

Slenderman Must Die: Sanatorium 2021

Release Date

Developer

Platforms

Controls

More Games In This Series