Backrooms Lost Runners

Backrooms Lost Runners

Early access since Jun 2026

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.

76% positive · 734 reviews
Not yet
In early access, content still planned
High confidence
Content Planned
Not yet
In early access, content still planned
High confidence
Content Planned

Where to buy

Steam $13.99
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Evaluation

Backrooms Lost Runners launched into Early Access on June 17, 2026. The developer has been communicating actively and regularly since launch — with a progress update on June 30, 2026 previewing an upcoming content push, and a major update post on July 21, 2026 delivering expanded levels, a new entity (Regular Bacteria), procedural generation for Level 0, and numerous fixes. That same July 21 post also lists items still in development, including crafting balance adjustments and level-design fixes, confirming work is ongoing. The Early Access launch post on June 18, 2026 described this phase as "only the beginning," with explicit goals to improve, fix, expand, and use player feedback to guide development. A pre-launch dev blog from April 21, 2026 acknowledged that the full camp progression system — a planned feature — did not make it into the initial build and would continue to be developed post-launch. The developer has communicated consistently and shipped content within the first five weeks of Early Access, demonstrating an active development cadence. This game is still being actively built.
Evidence
Major update delivered: expanded Level 0 with procedural generation, reworked Dark Zone in Episode 1, new Regular Bacteria entity, spray paint items, and numerous bug fixes. Post also lists items still in development, including crafting balance and level-design fixes.
news post · Jul 21, 2026 source content planned
high
Progress update outlines an upcoming patch covering improved AI, reworked procedural generation for locations, procedurally generated loot, revamped loot economy, and multiple balance changes across weapons, clothing, stamina, and sanity.
news post · Jun 30, 2026 source content planned
high

Media

Details

Publisher
ShimStudioGames
Achievements
19
Platform
Windows
Controller
—
Steam Deck
Playable
Players
Single-player · Multiplayer · Co-op

About this 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.

Last evaluated Sep 2, 2026
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