A bullet-hell boss rush for up to 8 players. Take on 45 unique boss fights, then face a final boss that combines the other boss' mechanics. Dodge solo or survive together, unlock abilities and pets, and build your own raid.

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 26200991
Update posts
10 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
34 hoursMiddle gap across the last 5 builds we saw
| Build | Went live | Patch notes |
|---|---|---|
| 26200991 | None posted | |
| 26189562 | None posted | |
| 26178575 | Patch Notes October 24th | |
| 26127030 | None posted | |
| 26090818 | 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 |
|---|---|
| 19 Oct 2026 | October 19th Patch Notes Patch notes |
| 17 Oct 2026 | Patch Notes October 17th Patch notes |
| 16 Oct 2026 | Patch Notes October 16th Patch notes |
| 13 Oct 2026 | Patch Notes October 13th Patch notes |
| 10 Oct 2026 | Patch Notes October 10th Patch notes |
| 6 Oct 2026 |
| October 6th Patch Notes: Big Update Patch notes |
| 3 Oct 2026 | October 3rd Patch Notes: Big Update Patch notes |
| 20 Sept 2026 | September 20th Patch Notes Patch notes |
| 12 Sept 2026 | September 12th Patch Notes: Big Fixes 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