Polish railway simulator emphasizing multiplayer and realism. Become a train driver, operating faithfully recreated trains, or a dispatcher, managing traffic and signalling equipment at your post. Cooperate online, build stations in the editor, and join railway enthusiasts!

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 26176213
Update posts
6 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 |
|---|---|---|
| 26176213 | None posted | |
| 25277461 | 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 |
|---|---|
| 29 Aug 2026 | Update 2026.2.2 "Zwrotka" Patch notes |
| 6 Aug 2026 | Update 2026.2.1 "Zwrotka" Update |
| 16 Apr 2026 | Wydanie 2026.1.2 "Konstal" Patch notes |
| 27 Mar 2026 | Update 2026.1.1 "Edek" Update |
| 6 Jan 2026 | Update 2025.4.1 - "Iskierka" (Little Spark) Update |
| 31 Oct 2025 |
| Update 2025.3.1 - "Pinezka" (Pushpin) Update |
| 23 Jul 2025 | Update 2025.2.4 – New ST44 Liveries and Fixes Patch notes |
| 20 Jun 2025 | Update 2025.2.3 – SKPL liveries and 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