The award-winning sci-fi city builder is back - remastered, expanded and even more stunning. Colonize Mars and survive the process, from exploration and infrastructure to welcoming colonists and achieving long-term stability. Are you ready? Mars is waiting.

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 25579348
Update posts
12 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 |
|---|---|---|
| 25579348 | Linux Stability Update |
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 |
|---|---|
| 30 Sept 2026 | Linux Stability Update Patch notes |
| 23 Sept 2026 | Patch 1.1.1 - Patch Notes Update |
| 8 Sept 2026 | Services & Science Patch Notes - Version 1.1.0 Update |
| 11 Jun 2026 | Linux Stability Update Patch notes |
| 10 Jun 2026 | Feeding the Future Timeline Update Update |
| 28 Apr 2026 |
| Patch 1.0.7 - Patch Notes Update |
| 16 Feb 2026 | Patch 1.0.6 - Patch Notes Update |
| 19 Jan 2026 | Patch 1.0.5 - Patch Notes Update |
| 10 Dec 2025 | Patch 1.0.4 - Patch Notes Update |
| 20 Nov 2025 | Hotfix 1.0.3 - Patch Notes Update |
| 17 Nov 2025 | Hotfix 1.0.2 - Patch Notes Update |
| 14 Nov 2025 | Hotfix 1.0.1 - Patch Notes 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