"Quantum Derelict" is a rogue-lite survival horror game set in a chilling Lovecraftian inspired narrative. In the uncharted vastness of space, outwit the sinister cult of VUGSHERYOG and the lurking horrors as you strive to retain your sanity, find rescue, and survive against all odds.

Public builds
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Counted once we have watched for 90 days (since 21 Oct 2026)
Distinct builds deployed to a game's public (default) Steam branch, as Steam's client network describes them.
Checked within minutes of each Steam change. Observed since 21 Oct 2026.
Source: Steam client network (PICS), App info, public branch. Full methodology
Latest public build
Build 20252623
Update posts
0 postsPosts announcing an update, tagged or not
Posts in a game's official Steam news feed that announce an update: tagged as patch notes by the developer, or plainly about a patch or a released update.
Source: Steam Web API, ISteamNews/GetNewsForApp. Full methodology
Typical gap between builds
Not enough builds yet| Build | Went live | Patch notes |
|---|---|---|
| 20252623 | Unity vulnerability hotfix |
From Steam’s client network, last checked . Builds before 21 Oct 2026, when we started watching, aren't listed. Patch notes are the developer’s update post from an hour before to a day after the build. Not every build gets one. How we count
| Posted | Update |
|---|---|
| 4 Oct 2025 | Unity vulnerability hotfix Patch notes |
| 1 Jan 2025 | Quantum Derelict Update 2 Hotfix 3 is live! Patch notes |
| 31 Dec 2024 | Quantum Derelict Update 2 hotfix 2 for Steam Deck has been released. Patch notes |
| 29 Dec 2024 | Quantum Derelict Update 2 Hotfix 1 is now live. Patch notes |
| 9 Jan 2024 | Update 2 - Automation and Upgrades has been released! Update |
| 4 Oct 2023 |
| Chapter 2 Update! Patch notes |
| 14 Jul 2023 | Patch Version 1.0.002 Patch notes |
Steam keeps no record of past build numbers, so before 21 Oct 2026 a game’s update history comes from its own Steam news: posts tagged as patch notes, and untagged posts that plainly announce a patch or a released update. Older posts are still being read in, most played games first. How we count