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 24093103
Update posts
2 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 |
|---|---|---|
| 24093103 | Small Bugfix Patch |
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 |
|---|---|
| 7 Jul 2026 | Small Bugfix Patch Patch notes |
| 30 Jun 2026 | After The Collapse – v2.0.0 is out! Update |
| 24 Jul 2025 | Maintenance Patch 1.5.1.1 Patch notes |
| 27 May 2025 | Update 1.5.1: New Sound Library Update |
| 26 May 2025 | Spiderling Content Update 1.5.0 Update |
| 28 Feb 2025 |
| Update 1.3.5: General Update + DLC News Update |
| 7 Dec 2024 | Update 1.3.1: Cats! (and stuff) Update |
| 16 Oct 2024 | Maintenance Patch 1.3.0.2 Patch notes |
| 2 Oct 2024 | Update 1.3.0: General Update Update |
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
ATC is a base building game set in a post-apocalyptic world featuring urban environments. Build a base across several layers with dozens of survivors. Fight other factions for the control of the remaining production centers and explore the world to find long forgotten resources and technologies.
