Public builds
—No reading yet
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 26349529
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
315 daysMiddle gap across the last 3 builds we saw
| Build | Went live | Patch notes |
|---|---|---|
| 26349529 | None posted | |
| 26345895 | None posted | |
| 21271259 | None posted |
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 |
|---|---|
| 28 Oct 2025 | Third hotfix + Small Halloween update has been released Update |
| 26 Oct 2025 | Second hotfix has been released Patch notes |
| 12 Sept 2025 | DEMO UPDATE v0913 Update |
| 29 Aug 2025 | UPDATE v0829 Update |
| 26 Aug 2025 | DEMO v0826 Hotfix Patch notes |
| 25 Aug 2025 |
| DEMO v0825 Hotfix 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
Backrooms: Facility Unknown - Is a co-op horror game about exploration of dangerous liminal spaces. Wander around the complex alone or with friends. In any case, your task is to do your job and survive.
