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Research Facility G-1-6 has gone dark. Your mission: reestablish contact and investigate the communication blackout. Equipped with AEGIS-scanner and a flashlight, uncover what is really going on here.
Game modes: Single player
Right now the lowest price for Quantum Sleeper we're tracking is $8.99 at Steam. We compare 1 store and prices refresh every few minutes.
The lowest price we've recorded for Quantum Sleeper is $4.49 at Steam on October 2, 2026. The current best price is about 100% above that low.
100% of 18 Steam user reviews for Quantum Sleeper are positive ("Positive").
Quantum Sleeper released on October 14, 2024, developed by Helm Boy Studios and published by Interdiction Studios.
Quantum Sleeper is available on PC (Microsoft Windows). It supports single player.
Quantum Sleeper last hit a new low of $4.49 on October 2, 2026 at Steam. Current best price is $8.99. Prices on this page refresh every few minutes, so check back around seasonal sales for new lows.
The cheapest Quantum Sleeper price right now is $8.99 at Steam.
| Store | Discount | Price | Buy link |
|---|---|---|---|
 SteamBest price | — | $8.99 | Buy Quantum Sleeper at Steam |
All-time low: $4.49 at Steam on Oct 2, 2026 — the current best price is 100% above it.
Prices in USD, refreshed every few minutes. Switch currency on this page for EUR/GBP/BRL and more.
