Cosmonator is an 'RPG-em-up': a hybrid of classic fast-paced top-down shoot-em-up action infused with deep character building elements. Build up your own unique alien-killing machine to avenge the destruction of planet Earth!

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 12615420
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 |
|---|---|---|
| 12615420 | Cosmonator update 4.1.1 released |
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 |
|---|---|
| 17 Jan 2024 | Cosmonator update 4.1.1 released Patch notes |
| 26 Sept 2021 | Cosmonator update 4.1.0 released Patch notes |
| 6 May 2020 | Cosmonator update 4.0.0 released Update |
| 9 Dec 2019 | Cosmonator update 3.3.0 released Update |
| 19 Sept 2019 | Cosmonator update 3.2.1.1 released Patch notes |
| 26 Jun 2019 |
| Cosmonator update 3.2.0 released Patch notes |
| 18 Feb 2019 | Cosmonator update 3.1.1.0 released Patch notes |
| 23 Jan 2019 | Improved controller support Patch notes |
| 24 Dec 2018 | Cosmonator update 2.9.0 released 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