Project Vesperi is a branching narrative sci-fi game where you play as Doctor Evelyn Roth, sent to investigate a potential sign of life on Venus. When an intruder threatens the only habitable station on the planet, your choices will shape the fate of those around you—and humanity itself.

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 23581257
Update posts
4 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 |
|---|---|---|
| 23581257 | Patch v1.5.8 |
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 |
|---|---|
| 11 Jun 2026 | Patch v1.5.8 Patch notes |
| 28 May 2026 | Patch v1.5.6 Patch notes |
| 28 Apr 2026 | Hotfix v1.5.0 Patch notes |
| 27 Apr 2026 | Patch v1.4.8 Patch notes |
| 16 Nov 2024 | Project Vesperi Demo Patch 1 Notes 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.
| App | Players now | Latest build |
|---|---|---|
| Project Vesperi Playtest · App 3122810 | Not yet | 23797466 · |
Separate Steam apps for test, staging and playtest versions of Project Vesperi. 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