Filthium Zero is a compact action roguelite experience featuring a mix of vertical and ground combat. Purge the Filthium-infested Earth, battle hordes of mutants, unlock powerful upgrades to survive, and watch the ragdolls fly in this short and explosive joyride.

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 22376660
Update posts
3 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 |
|---|---|---|
| 22376660 | Patch Notes - v1.0.1c |
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 Mar 2026 | Patch Notes - v1.0.1c Patch notes |
| 14 Mar 2026 | Patch Notes - v1.0.1b Patch notes |
| 13 Mar 2026 | Patch Notes - v1.0.1a Patch notes |
| 18 Aug 2025 | Thank you to more than 300 demo players! Demo v.0.5.3 now live! 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
| App | Players now | Latest build |
|---|---|---|
| Filthium Zero Playtest · App 3727450 | Not yet | 21569034 · |
Separate Steam apps for test, staging and playtest versions of Filthium Zero. 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