If you were wondering whether Subnautica 2 will support crossplay and cross-platform, you’ve arrived at the right place.
Subnautica 2 brings multiplayer to the series for the first time, letting you dive into alien oceans with up to three friends in co-op. Unknown Worlds Entertainment confirmed cross-platform multiplayer on Steam, with the game launching in Early Access on May 14, 2026.
Having that said, here’s everything you need to know about crossplay and cross-platform support in Subnautica 2.
Table of contents
Does Subnautica 2 support crossplay?
At the early access launch, Subnautica 2 will support crossplay between PC via Steam and Epic and Xbox Series X/S consoles. You have to add friends through the built-in friends system first, and then proceed with the process.
The Steam page lists “Cross-Platform Multiplayer” as a key feature, confirming it works across these platforms from Early Access day one. Xbox store pages boast “Xbox cross-platform multiplayer” and co-op for two to four players.
How Subnautica 2 crossplay actually works
Fire up the game, hit Multiplayer from the menu, and use the server browser or direct invite via friends list. You can convert your solo save to co-op on the fly or start fresh to avoid messing up your lone wolf run.
Up to four players total (you plus three buddies) share resources, but watch out because friends might snag or steal your resources. Cloud saves, and Steam Cloud will help sync progress.
Will Subnautica 2 have cross-progression support?
Yes, character progression, inventory, base blueprints, and research sync across platforms with a linked Unknown Worlds account and cloud saves enabled. This means your scanned blueprints from PC carry to Xbox sessions.
Solo worlds don’t mix with co-op unless you choose, preserving that creepy isolation Subnautica nails. Devs prioritize single-player first, so multiplayer feels optional, not forced. Crossplay shines on stable connections, but high-ping groups can stutter during big builds. So keep your game and drivers updated. Xbox users need Live Gold for online co-op.
If invites fail, restart the friends list or check the firewall, which is common on PC. Since the game will launch in Early Access, expect some bugs like desync in crowded bases or some glitches, but quick patches should fix that.
