Aster is a classic arcade style shooter, with fast action, aliens, (and sex). Earth is fighting a losing battle against aliens from another galaxy, and things are looking bleak. In a desperate gambit, Earth's military calls upon a hired gun to turn the tide. Take role of an ace mercenary pilot, and fight your way through 38 levels of arcade action. Upgrade your ship and improve your piloting skills to protect Earth and fend off what lurks in space! Earth forces don't pay so well when they're subjugated by an Alien Empire, after all.

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 4975209
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 |
|---|---|---|
| 4975209 | 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 |
|---|---|
| 1 May 2020 | Aster Update 1.1: Braking and More turning options 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