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 24251643
Typical gap between builds
Not enough builds yet| Build | Went live | Patch notes |
|---|---|---|
| 24251643 | 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 post tagged as patch notes from an hour before to a day after the build. Not every build gets one. How we count
Protocol Five is a surreal first-person adventure with multiple endings, you will find yourself in a world where some rotten things want to kill you. Some choices along the way drastically and irreversibly change the game, leading to one of the 5 possible endings.
