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Backrooms Lost Runners
Single-player Multi-player Co-op Online Co-op Action Adventure Indie Early Access Steam Achievements Family Sharing 2026 Download Not Available Steam Store

Backrooms Lost Runners

File Size: 3.4 GB Rating: 80% (Mostly Positive) Added Date: Jul 09, 2026 Downloads: 0
Backrooms Lost Runners is a co-op survival horror with team play, voice-reactive AI, and immersive puzzles. This isn’t a “walking simulator”: explore liminal spaces, outsmart entities, and remember—even a whisper can give you away.

Pre-installed Notice

This game is already pre-installed for you, meaning you do not need to run any setups or installer files. Simply extract the folder, double-click the game executable as Administrator, and play instantly!

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About The Game

Backrooms Lost Runners is a cooperative survival-horror experience where teamwork is your only real weapon 

and even your voice can put you in danger.

Trapped inside the endless corridors of the Backrooms, you and your friends must explore abandoned camps, solve environmental puzzles, manage scarce resources, and survive encounters with entities that react to sound, light, and movement. Every dark hallway hides a threat. Every whisper can give you away. Every wrong decision can separate the group forever.

Key Features

Immersive Horror Atmosphere
Venture through dimly lit corridors, abandoned shelters, and unstable spaces filled with oppressive silence, dynamic lighting, and realistic sound design. In the Backrooms, every footstep matters  and every moment of silence feels wrong.

Cooperative Survival
Survival depends on communication, trust, and coordination. Share resources, split responsibilities, solve puzzles together, and make difficult choices as a team. Staying together is safer  but sometimes the best loot is found far from the group.

True Cooperative Gameplay

Collaboration is crucial for survival. Manage your resources, coordinate tactics via voice chat, and make collective choices.

Voice-Reactive Threats
Face entities with different behaviors and weaknesses. Some react to sound. Some hunt through darkness. Some appear when your mind starts to break. Learn how they behave, stay quiet when needed, and use your environment to survive.

Sanity System 
Darkness, fear, isolation, and supernatural events affect your mental state. Stay near light, heat sources, and safe areas to slow sanity loss. If your mind collapses, the Backrooms will begin to change around you.

Tesseract Afterlife
Death is not the end. When you die, you are pulled into a surreal Tesseract realm where you must find a way back to life. But returning may cost you time, resources, and the safety of your team.

Storyline & Quest System

Discover journals, audio recordings, floppy disks, and unsettling traces of survivors. Piece together the timeline of the catastrophe, uncover the fates of those who were here before you, and find out what is really happening inside the Backrooms.


Resource Management & Character Progression

Scavenge for food, clothing, and tools to maintain health, stamina, and sanity. Will you risk venturing alone for high-value loot, or stick close to your squad?

Find valuable items and resources by exploring camps, lockers, and shelters.



Reality-Bending Anomalies

Zero-gravity zones, sudden teleportation gates, shifting walls, broken physics, and impossible spaces will force you to question what is real. In the Backrooms, the environment itself can become the enemy.

YOUR ADVENTURE IS JUST BEGINNING.

How to Install

1. Download the game using any of the mirrors above.
2. Extract the archive using WinRAR or 7-Zip.
3. Turn off your antivirus or add the extracted folder to exclusions (to prevent crack files deletion).
4. Run the game .exe file as administrator.
5. Play!

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System Requirements

  • OS: Microsoft Windows 10 64-bit
  • Processor: i5-3570 3.4 GHz 4 Core or higher (or AMD equivalent)
  • Memory: 8 GB RAM
  • Graphics: GTX 1050 ti or higher
  • Storage: 6 GB available space

Game Info

  • Genre: Action, Adventure, Indie, Early Access
  • Developer: ShimStudioGames
  • Platform: PC
  • Game Size: 3.4 GB
  • Released By: ShimStudioGames
  • Version: Build 23785714
  • Pre-Installed Game No Setup Needed