Subnautica 2 Server Update Guide
Keep your Subnautica 2 co-op world current with the latest Early Access patches and improvements.
🔄 Why Update?
- Bug fixes and stability
- New content and features
- Performance improvements
- Security patches
How updates work
Subnautica 2 has no dedicated-server binary and no SteamCMD server install. The game updates through whichever storefront you own it on, Steam, the Epic Games Store, the Windows Store, or Game Pass. The host's game client is what runs the world, so updating is the same as updating any normal copy of the game.
- Steam: updates download automatically, or right-click the game and choose Update.
- Epic / Windows Store / Game Pass: updates are handled by the respective launcher.
Update Steps
- Back up your save: use Upload to Cloud, or copy the local save folder.
- Let the host update first: apply the patch on the machine that hosts the world.
- Match versions: every player must be on the same client version to join the same world.
- Restart the session: relaunch and confirm the crew can connect.
On Supercraft: when you run your world as an always-online managed session, we keep the host client patched for you, so you skip the manual update step.
Update Frequency
- Check Weekly: Early Access patches arrive often
- Major Patches: Update before the next session
- Minor Patches: Update within 1-2 days
Frequently Asked Questions
Will updates break saves?
Most patches are backward compatible. Back up before major Early Access updates as a precaution.
Do all players need to update?
Yes. Everyone in the same co-op world must be on the same client version, so a mismatched player should update before rejoining.
Auto-Updates: Supercraft keeps your always-online Subnautica 2 session on the current patch automatically.