Yes, Subnautica 2 fully supports crossplay.
Yes, Subnautica 2 supports full crossplay across PC, Xbox Series X/S. This means you can play with friends regardless of their platform. Cross-progression is limited — your progress only carries between some platforms, not all of them.
Subnautica 2 is available on the following platforms:
| PC (Steam) | PC (MS Store) | Xbox Series | |
|---|---|---|---|
| PC (Steam) | No | No | |
| PC (Microsoft Store) | No | Yes | |
| Xbox Series X/S | No | Yes |
| Feature | Supported | Details |
|---|---|---|
| Crossplay | Yes | All listed platforms can play together. |
| Cross-Progression | Partial | Saves only carry between some platforms — see the matrix above. |
| Split Screen / Couch Co-op | No | Online multiplayer only — no shared-screen play. |
Partially — Subnautica 2 has limited cross-progression. Your progress carries between some platforms but not others, so check the matrix above before you buy on a second platform.
Subnautica 2 supports Xbox Play Anywhere, so a single purchase covers both Xbox Series X|S and the Windows / Microsoft Store PC version and your save syncs between them. That sync does not extend to Steam or Epic, whose saves stand on their own. The bigger caveat is the Early Access state: the game launched into Early Access on 14 May 2026, content is still arriving, and there is no PlayStation 5 or Nintendo version, so those players cannot take part in crossplay at all yet.
No — Subnautica 2 does not offer split screen or couch co-op. To play together, each player needs their own system running the game.
There is no local co-op or split-screen. All four-player play is online, and each player needs their own copy and device. The host's world acts as the shared save, so progress made together lives in that host's game.
Subnautica 2 is the first game in the series with multiplayer: a single-player survival experience that can optionally be played in four-player online co-op. Crossplay is complete across everything it currently runs on — Steam, the Epic Games Store, the Microsoft Store, Xbox Series X|S, Game Pass and the ROG Xbox Ally all share one pool. Rather than using storefront friends lists, it runs on Epic Online Services and pairs players with an 8-digit Friend Code.
The game is designed first as a solo survival experience, and co-op is optional. Single-player does not depend on other people, so you can explore the planet entirely on your own; the online systems only come into play when you invite someone into your world.
Yes. PC players on Steam, the Epic Games Store and the Microsoft Store can play with Xbox Series X|S players in the same four-player co-op world, including through Game Pass.
Not yet. Early Access launched on PC and Xbox Series X|S only, so there is no PS5 or Switch version and those players cannot join a co-op session.
Up to four players can share one world. The game is still built as a single-player survival experience that you can optionally play co-operatively.
Multiplayer uses an 8-digit Friend Code through Epic Online Services rather than your Steam or Xbox friends list. Share your code, have your friend add you, then invite them into your world.
Partly. It supports Xbox Play Anywhere, so saves sync between Xbox Series X|S and the Windows / Microsoft Store PC version. Steam and Epic saves are separate and do not sync with the Xbox ecosystem.
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