Is Subnautica 2 crossplay? Co-op and platforms so far

Subnautica 2 has crossplay, but only between PC and Xbox. Players on Steam, the Epic Games Store, the Windows Store, and Xbox Series X|S all sit in the same co-op pool, so any of them can crew up together.

There's no PlayStation 5 or Nintendo Switch 2 version yet, which means those players can't join and nothing about them has been officially confirmed.

The game entered Early Access on May 14, 2026 with cross-platform multiplayer already switched on. Its official Steam store page lists "Cross-Platform Multiplayer" as a feature, and up to four players can team up in a single session through Epic Online Services.

So Subnautica 2 is cross platform, just inside the PC and Xbox family for now. If you're on Steam and a friend is on an Xbox Series X|S, you're set from your first session. The first Subnautica is one of our picks for the best survival games on Xbox if you dive on Xbox.

Which platforms share Subnautica 2 crossplay

Here's every platform the game runs on and where crossplay stands, straight from what Unknown Worlds shipped for Early Access.

One thing to flag: this is Early Access, so the platform list and crossplay scope can change with future updates. Everything here reflects the game as of August 23, 2026.

Cross-progression and cross-save: what actually carries over

People mix up crossplay and cross-progression, so here's the split. Crossplay is about playing together across systems, while cross-progression is about your save file following you to another system.

Subnautica 2 only handles the save side partway. Stay inside the Xbox ecosystem and it's automatic.

Xbox Play Anywhere syncs your progress across Xbox Series X|S consoles, the game on PC through the Windows/Microsoft Store, the ROG Xbox Ally, and Xbox Cloud Gaming, as long as you're signed in to the same Microsoft account.

Crossing between storefronts is manual. Ark handles its Xbox and PC saves through Play Anywhere too, as our guide on whether Ark is crossplay covers. There's no automatic Steam-to-Xbox or Epic-to-Xbox save sync.

To move a save between those ecosystems, upload it to the cloud from the main menu, then import it on the other platform with a one-time code. PlayStation and Switch cross-progression doesn't apply, since those versions don't exist. The Forest and its sequel never got crossplay at all, as our guide on whether The Forest is crossplay covers.

How to play co-op with a friend

Crossplay is on by default, so there's no setting to switch before you start. Co-op runs on an 8-digit Friend Code through Epic Online Services, or a direct invite.

1. Open the Friends List in-game (Escape on PC, Start on Xbox).
2. The first time, generate your 8-digit Friend Code.
3. Share that code with a friend on any supported platform so they can add you and join.
4. Already friends in-game? The host can send a direct invite instead.

Up to four players can team up in one session, mixing PC and Xbox freely. Grounded runs its co-op on the same Xbox and PC family, as our Grounded crossplay guide shows.

How to turn crossplay off

There isn't a documented way to turn crossplay off, and you likely won't miss one. Subnautica 2 uses invite and code-based sessions rather than open matchmaking, so there's no public crossplay lobby dropping strangers into your game.

You only play with people you invite or whose Friend Code you enter. That keeps the co-op closed to your own group without any toggle.

Voice chat: what's confirmed

Built-in in-game voice chat isn't officially documented for Subnautica 2 right now. During Early Access, players are leaning on platform party chat or Discord to talk while they play.

Treat voice as unconfirmed rather than absent, since Unknown Worlds hasn't made an official statement either way.

PS5 and Switch 2: what's actually confirmed

You'll see roundups claiming a PlayStation 5 release or PS5 crossplay is on the way. Right now that's speculation, not fact.

There is no PS5 or Nintendo Switch 2 version of Subnautica 2, and Unknown Worlds has not announced either for the Early Access period. The studio has only said it hasn't ruled them out for the eventual full release, which is a long way from a confirmed plan.

So if you're waiting to play with a PlayStation friend, there's no date and no promise to point to yet. Take any "PS5 crossplay confirmed" headline as unverified until Unknown Worlds says otherwise.

Where Subnautica 2 co-op stands right now

For Early Access, the co-op story is short: if you and your friends are on PC or Xbox, you can play together today, and Xbox players get automatic save sync on top.

Anyone hoping for PlayStation or Switch 2 support is waiting on an announcement that hasn't come. Palworld already added PS5, and our Palworld crossplay guide covers how it all connects. Because this is Early Access, it's worth re-checking the platform list after big updates.