
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 19017868
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 |
|---|---|---|
| 19017868 | Portal - Update |
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 |
|---|---|
| 27 Jun 2025 | Portal - Update Patch notes |
| 28 May 2025 | Portal - Update Patch notes |
| 23 May 2025 | Portal - Update Patch notes |
| 19 May 2025 | Portal - Update Patch notes |
| 13 Feb 2025 | Portal Update Patch notes |
| 5 Jan 2024 |
| App | Players now | Latest build |
|---|---|---|
| Portal: Lost in Aperture · App 3043220 | Not yet | None seen yet |
| Portal: Prelude RTX · App 2410180 | Not yet | 11741294 · |
Separate Steam apps for test, staging and playtest versions of Portal. They have no store page, so they aren’t counted as games or releases. Builds come from Steam’s client network, players from the Steam Web API every few hours. Steam gives no count for an app nobody can launch. How we count
| Portal - Update Patch notes |
| 17 Jan 2023 | Portal Update Patch notes |
| 19 Nov 2022 | Portal - Update Patch notes |
| 29 Aug 2022 | Portal: Update Patch notes |
| 13 Apr 2022 | Portal - Update Patch notes |
| 28 Feb 2022 | Portal - Update Patch notes |
| 8 Dec 2014 | Portal Update Released Update |
| 24 Jun 2013 | Portal Update Released 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