The sandbox version of Mayhem on a Rainbow - VR. It offers endless fun with arena and wave shooters, spiced with mini games and upcoming new features. A glimpse into the wacky apocalypse where zombies fly in slow motion and chickens lay airstrikes! Saddle up your unicorn and fire up the spaceboat!

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 9508209
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 |
|---|---|---|
| 9508209 | Update 4 |
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 |
|---|---|
| 14 Sept 2022 | Update 4 Update |
| 30 Jul 2022 | UPDATE 3 - Randomly generated handguns Update |
| 28 Jul 2022 | UPDATE 2 Update |
| 22 Jul 2022 | UPDATE 1 - Index Controlls, start up crash 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