STEAMDB NEXUS

Steam app 3072120 · updated 12 Sep 2026, 22:54 UTC

Backrooms Lost Runners

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.

Backrooms Lost Runners Steam header artwork
ShimStudioGamesShimStudioGames
5playing now
1424-hour peak
624all-time peak
12average, last 30 days

The last 30 days

−5.8Gain−32.1%% gain50Peak

353 hourly samples, with the daily peak drawn over them. Weekends are shaded.

01427405413 Aug18 Aug23 Aug28 Aug02 Sep07 Sep12 SepThursday 13 August 20268 peakFriday 14 August 202622 peakSaturday 15 August 202650 peakSunday 16 August 202635 peakMonday 17 August 202627 peakTuesday 18 August 202624 peakWednesday 19 August 202627 peakThursday 20 August 202632 peakFriday 21 August 202625 peakSaturday 22 August 202627 peakSunday 23 August 202632 peakMonday 24 August 202630 peakTuesday 25 August 202620 peakWednesday 26 August 202623 peakThursday 27 August 202612 peakFriday 28 August 202620 peakSaturday 29 August 202621 peakSunday 30 August 202625 peakMonday 31 August 202623 peakTuesday 01 September 202617 peakWednesday 02 September 202610 peakThursday 03 September 202615 peakFriday 04 September 202618 peakSaturday 05 September 202616 peakSunday 06 September 202618 peakMonday 07 September 202617 peakTuesday 08 September 202613 peakWednesday 09 September 202614 peakThursday 10 September 20263 peakFriday 11 September 202610 peakSaturday 12 September 202614 peak
Daily peakEvery hourly sample

All time

4 months, June 2026 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.

0168337505674Jun 2026Jul 2026Aug 2026Sep 2026June 2026624 monthly peakJuly 2026162 monthly peakAugust 202656 monthly peakSeptember 202618 monthly peak
Monthly peak

The last four months

Show:

The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.

04487131175July 2026August 2026September 2026October 2026July 2026162 peak — daily detail belowAugust 202656 peak — hourly detail belowSeptember 202618 peak — hourly detail below
Monthly peakHas finer data

July 2026

31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.

0448713117501 Jul06 Jul11 Jul16 Jul21 Jul26 Jul31 JulWednesday 01 July 2026129 peakThursday 02 July 2026123 peakFriday 03 July 2026157 peakSaturday 04 July 2026162 peakSunday 05 July 2026162 peakMonday 06 July 2026105 peakTuesday 07 July 202692 peakWednesday 08 July 202684 peakThursday 09 July 202673 peakFriday 10 July 202671 peakSaturday 11 July 2026110 peakSunday 12 July 2026129 peakMonday 13 July 202688 peakTuesday 14 July 202663 peakWednesday 15 July 202666 peakThursday 16 July 202659 peakFriday 17 July 202670 peakSaturday 18 July 202671 peakSunday 19 July 202671 peakMonday 20 July 202655 peakTuesday 21 July 202677 peakWednesday 22 July 202643 peakThursday 23 July 202647 peakFriday 24 July 202633 peakSaturday 25 July 202658 peakSunday 26 July 202652 peakMonday 27 July 202654 peakTuesday 28 July 202644 peakWednesday 29 July 202642 peakThursday 30 July 202634 peakFriday 31 July 202639 peak

August 2026

31 days as the curve, each the highest figure that day. Behind it, 248 hourly samples from 13 Aug, which is as far back as the source keeps every hour. Weekends are shaded.

01530456001 Aug06 Aug11 Aug16 Aug21 Aug26 Aug31 AugSaturday 01 August 202650 peakSunday 02 August 202656 peakMonday 03 August 202643 peakTuesday 04 August 202651 peakWednesday 05 August 202635 peakThursday 06 August 202632 peakFriday 07 August 202651 peakSaturday 08 August 202652 peakSunday 09 August 202639 peakMonday 10 August 202634 peakTuesday 11 August 202621 peakWednesday 12 August 202622 peakThursday 13 August 202644 peakFriday 14 August 202622 peakSaturday 15 August 202650 peakSunday 16 August 202635 peakMonday 17 August 202627 peakTuesday 18 August 202624 peakWednesday 19 August 202627 peakThursday 20 August 202632 peakFriday 21 August 202625 peakSaturday 22 August 202627 peakSunday 23 August 202632 peakMonday 24 August 202630 peakTuesday 25 August 202620 peakWednesday 26 August 202623 peakThursday 27 August 202612 peakFriday 28 August 202620 peakSaturday 29 August 202621 peakSunday 30 August 202625 peakMonday 31 August 202623 peak

September 2026

12 days as the curve, each the highest figure that day. Behind it, 105 hourly samples. Each dip is a night. Weekends are shaded.

0510151901 Sep03 Sep05 Sep07 Sep09 Sep11 SepTuesday 01 September 202617 peakWednesday 02 September 202610 peakThursday 03 September 202615 peakFriday 04 September 202618 peakSaturday 05 September 202616 peakSunday 06 September 202618 peakMonday 07 September 202617 peakTuesday 08 September 202613 peakWednesday 09 September 202614 peakThursday 10 September 20263 peakFriday 11 September 202610 peakSaturday 12 September 202614 peak

October 2026

Backrooms Lost Runners was released on 17 Jun, 2026.

Not out yet.There is nothing to draw for this month.
Nothing here is interpolated or estimated; where a sample is missing the line is broken.

Game information

Updated 12 Sep 2026, 22:54 UTC
App ID
3072120
Last updated
17 Jun 2026 build 23785714
Developer
ShimStudioGames
Publisher
ShimStudioGames
Release date
17 Jun, 2026
Platforms
Windows
Download size
3.37 GB
Install size
3.64 GB
Genres
Action, Adventure, Indie, Early Access
Game modes
Single-player, Multi-player, Co-op, Online Co-op
Controller support
Unknown
Early Access
Listed in Early Access
Achievements
19

Features & support

Steam features

Steam AchievementsFamily Sharing

Controllers & input

Accessibility

Popular tags

Early AccessStory RichCo-opPvESurvival HorrorAdventureHorrorCharacter CustomizationPsychological HorrorDarkMultiplayer1990's3DActionPuzzleCinematicIdlerExploration6DOFResource Management
About this gameFull description from Steam
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.
Content & age ratings2 regional ratings

Regional ratings

DEJUS14Linguagem imprópria · Violência
IGRS18Interaksi Daring · Horor · Kekerasan
System requirementsMinimum and recommended hardware

Minimum

Minimum: 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

Recommended

Recommended: OS: Microsoft Windows 10 64-bit Processor: i7-7700K 4.20 GHz or higher (or AMD equivalent) Memory: 16 GB RAM Graphics: RTX 3060 Storage: 6 GB available space
Supported languages17 languages
LanguageFull audio
English●
French
Italian
German
Spanish - Spain
Vietnamese
Spanish - Latin America
Traditional Chinese
Simplified Chinese
Korean
Polish
Portuguese - Brazil
Russian
Turkish
Ukrainian
Japanese
Czech

A blank audio cell means full audio was not marked in the returned language list.

Screenshots & trailersScreenshots and trailers

Trailers

AchievementsTotal count and selected achievements

19 achievements in total.

Show selected achievements (may contain spoilers)
Almond WaterHidden achievement
Wake UpHidden achievement
First Puzzle SolvedHidden achievement
Out of the ComplexHidden achievement
Into the Unstable ZoneHidden achievement
Death or...Hidden achievement
ElectrocutedHidden achievement
CrowbarHidden achievement
Fix the BridgeHidden achievement
Meeting old friendsHidden achievement

View all Steam achievements

10 developer announcements, Oct 2025 to Jul 2026 · times in UTC

July

  1. Upcoming Update: Expanded Levels, New Entity & Major Fixes

    Hello, Runners!Our team is actively working on bug fixes, gameplay improvements, and new content for the game.Many of you have shared feedback about bugs, technical issues, and other rough edges. We truly appreciate every report and are…

    El Glommy

June

  1. Progress Update: AI, Balance & Liminal Backrooms

    Hello, Runners!We are working on the next update for Backrooms Lost Runners, and this one is focused on making the game feel more balanced, more dangerous, and more liminal.Here is what we are currently working on:Improved AI…

    Shimaletik
  2. Backrooms Lost Runners Is Out in Early Access!

    Backrooms Lost Runners Is Now Available in Early Access!Runners,We’re excited to announce that Backrooms Lost Runners is now available in Early Access on Steam.Thank you to everyone who waited for the game, played the demo, added it to…

    El Glommy
  3. Thank you for 100,000 wishlists!

    Hello, runners!We’ve just passed 100,000 wishlists on Steam.This is an incredible milestone for our team. When we started working on Backrooms Lost Runners, we never imagined we would reach a number like this.From the whole team, we want to…

    El Glommy

April

  1. Backrooms Lost Runners DEV-BLOG №1

    Backrooms Lost Runners Has Become Bigger, Deeper, and More DangerousGreetings, researchers and runners of Backrooms Lost Runners.We want to share how the game is shaping up as we approach release.Backrooms Lost Runners is currently in its…

    Shimaletik

January

  1. Thank you! Peak of 954 players on January 10

    Hi, Runners.Thank you to everyone who jumped into Backrooms: Lost Runners - you gave us an incredible gift: on January 10, we reached a peak concurrent player count of 954.We’re truly grateful for your interest, your feedback, and your…

    Shimaletik

October

  1. Demo updated: Localization Update + Improved Climbing

    What’s New in This Update We have expanded localization support and improved several gameplay elements to make the experience more comfortable and intuitive for everyone. Supported Languages • Chinese (Simplified) • Chinese (Traditional) •…

    Shimaletik
  2. Demo updated — reviews are now enabled

    Demo updated — you can now leave a review! Hello, everyone! We’ve updated the Backrooms: Lost Runners demo page — reviews are now enabled. Your feedback helps us prioritize fixes and improve the game. What to write about: 1–2 sentences with…

    Shimaletik
  3. [DEMO PATCH] Crash fix: light detection stability

    Demo Patch — Crash fix in light detection What’s fixed Fixed a crash that could occur near lamps while the game calculates light levels (point/spot/directional lights). Added extra safety checks for destroyed or streamed-out light…

    Patch notes
  4. Demo is live — Play now

    What’s in the demo1–4+ player co-op (solo supported)A focused slice of Level 0 with objectives and explorationUnique entities, tense audio cues, cinematic momentsTypical session length: 50–70 minutesHow to play togetherDownload the demo…

    Shimaletik

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