Backrooms Lost Unit

Co-op survival horror across Backrooms levels with different mechanics

JD Archives · Released May 21, 2026 · Early Access

Reviews: Very Positive; 80% of 55
Recent reviews: Mixed; 60% of 10 in 30 days
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Untested
Last update on Steam: 2 days ago; Oct 26, 2026
Minimum PC: RX 5300; 8 GB RAM · 12 GB disk; Full requirements

What is Backrooms Lost Unit?

A first-person horror game set in the Backrooms, playable alone or online with up to four players. You search levels for supplies, solve puzzles, and combine items while evading hostile entities, trying to find a way back to reality.

For you if...

+you enjoy coordinating with friends while enemies hunt you
+you like experimenting with items to overcome obstacles

Not for you if...

−you want relaxed exploration without threats or survival tasks

What players say

80% of 55 reviews are positive · 60% of 10 in the last 30 days

Players praise the varied level designs, visuals, and amount of content. Individual complaints mention inventory glitches, overly loud ambient sounds, and heavy camera bob while spectating.

Screenshots and trailer

Backrooms Lost Unit system requirements

Minimum: RX 5300, 8 GB RAM, 12 GB of disk space.

As published by the developer.

Can my PC run Backrooms Lost Unit?

Tell us your graphics card once and every game page will answer this for you.

Set up my PC →

Minimum

OS: Windows 10
Processor: Intel Core i7-8700 / AMD Ryzen 5 3600
Graphics: AMD RADEON RX 5300/ NVIDIA GeForce GTX 1650
Memory: 8 GB RAM
Storage: 12 GB available space MB available space

Does Backrooms Lost Unit have co-op or multiplayer?

Yes: co-op online. It also has a single-player mode.

Does Backrooms Lost Unit run on Steam Deck?

Untested Not yet tested by Valve on Steam Deck.

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows
Achievements: 13
Steam features: Family Sharing
Languages: Full audio: English. Text only: Spanish - Spain, Portuguese - Brazil.

Does Backrooms Lost Unit use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 28, 2026. How to filter AI games on Steam