Choose Ultimate Backrooms
Choose Ultimate Backrooms if you want the Stereo Sound side of the pairing.
Ultimate Backrooms vs Liminal Protocol
Ultimate Backrooms and Liminal Protocol both land in Action, Indie, Early Access on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both share Action, Indie, Early Access on Steam. Both support cooperative play. No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.
Which should you pick?
Choose Liminal Protocol
Choose Liminal Protocol if you want the Steam Leaderboards, Adjustable Text Size, and Color Alternatives side of the pairing. Liminal Protocol launched in 2026.
Both Ultimate Backrooms and Liminal Protocol sit in Action, Indie, and Early Access on Steam and both list Multi-player, Online Co-op, and Playable without Timed Input, so either pick lands in the same broad neighborhood. Use the side-by-side table for the feature view, or follow the "Games like" links below to see ranked alternatives for either title.
Side-by-side comparison
 Ultimate Backrooms |  Liminal Protocol | |
|---|---|---|
| Released | — | 2026 |
| Genres | Action, Indie, Early Access | Action, Indie, Early Access |
| Platforms | Windows | Windows |
| Steam Deck | Unrated | Unrated |
| Price | Price unknown | 2.99 USD |
| Steam reviews | — | — |
| Multiplayer | Multi-player, Online Co-op, Co-op | Multi-player, Online Co-op, Co-op |
| Developers | KarArts | Rabbit House Games |
Side by side
- Both share Action, Indie, Early Access on Steam.
- Both support cooperative play.
Ultimate Backrooms vs Liminal Protocol — FAQ
- Are Ultimate Backrooms and Liminal Protocol similar?
- They overlap on Action, Indie, Early Access on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.
- Do both Ultimate Backrooms and Liminal Protocol have co-op?
- Yes — both list a co-op category on Steam. Specifics differ: Ultimate Backrooms ships Online Co-op, Co-op; Liminal Protocol ships Online Co-op, Co-op.