Command the silent service. Modern Naval Warfare is the definitive tactical simulation that puts you inside the pressure hull of a Virginia-Class nuclear submarine. This uncompromising tactical simulation offers unparalleled depth in graphics, physics, and authentic combat systems.

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 26104348
Update posts
8 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 |
|---|---|---|
| 26104348 | Take it easy Update | |
| 25505328 | Onboarding & Tactical Systems 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 |
|---|---|
| 28 Sept 2026 | Onboarding & Tactical Systems Update Update |
| 31 Aug 2026 | Bridge Systems & QoL Update Update |
| 10 Aug 2026 | Documentation Update: New Manuals & TMA Guide Update |
| 27 Jul 2026 | Tactical Systems & Fleet Readiness Update Update |
| 7 Jul 2026 | Systems & Performance Update Update |
| 11 Jun 2026 |
| Modern Naval Warfare - Early Access Update #2 Patch notes |
| 28 May 2026 | Modern Naval Warfare - Early Access Update #1 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