A 1-4 player co-op horror and hunting game. Descend into an anomaly-filled underground to collect rare lure stones, return to the surface and use your Lure Gun to draw zombies in and hunt them. Kill, sell, upgrade. Survive below, hunt above.

Public builds
—No reading yet
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 26222649
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
30 hoursMiddle gap across the last 4 builds we saw
| Build | Went live | Patch notes |
|---|---|---|
| 26222649 | Beyond the Circle Update | |
| 26196954 | None posted | |
| 26189207 | None posted | |
| 26014394 | New Update ! New Threats ! |
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 Oct 2026 | New Update ! New Threats ! Patch notes |
| 9 Oct 2026 | The Food Chain Update Update |
| 8 Oct 2026 | Patch Notes – Performance, Stability & Gameplay Improvements Patch notes |
| 1 Oct 2026 | Anomaly Protocol – Major Update Update |
| 23 Sept 2026 | New Update Update |
| 1 Jul 2026 |
| Bug Fixes & New Content Update |
| 29 Apr 2026 | Scan System, Gameplay Improvements & Bug Fixes Update |
| 17 Apr 2026 | MAJOR UPDATE: Mission-2 Begins! A New Environment, A New Home,New Responsibility Update |
| 27 Jan 2026 | (New) Costume & Shop System - Optimization Update Update |
| 22 Dec 2025 | Anomaly Protocol 3.2 Patch notes |
| 18 Dec 2025 | HUGE UPDATE (New Features & Fully Improved Gameplay) Update |
| 16 Aug 2025 | A New Era Begins – [Anomaly Protocol v2.5] Is Live! Update |
| 23 Jul 2025 | Update Notes v2.2 (New Features and Fixes) Patch notes |
| 3 Jul 2025 | Anomaly Protocol v2.0 Patch notes |
| 29 Jun 2025 | version 1.9 bug fix Patch notes |
| 28 Jun 2025 | v1.8 bug fix and new feature Patch notes |
| 26 Jun 2025 | Anomaly Protocol new update 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