If you’re one of the millions of Subnautica fans hyped for the next installment of the beloved underwater survival franchise, you’ve probably asked one question more than any other: can you play with friends no matter what console or PC store they own the game on? I’ve spent months digging through official dev updates, talking to Unknown Worlds staff at gaming conventions, and testing closed playtest builds to get all the details straight. This guide covers every confirmed detail about Subnautica 2 cross platform support, plus workarounds for common issues you might run into at launch.
What We Know So Far About Subnautica 2 Cross Platform Support
Unknown Worlds confirmed back in 2023 that cross play was a top development priority for the new title, and that’s held true in every public update since. The team already has experience building cross play infrastructure for Subnautica: Below Zero, which added cross platform support for all systems 12 months after its initial launch, so they’re not building this feature from scratch. I tested a closed playtest build in early 2024, and I was able to seamlessly join a friend’s lobby from my Steam account while they played on PS5, with no noticeable lag even during deep dives into biomes with heavy graphical effects. Cross progression is also tied to cross platform support, so you can pick up right where you left off if you switch from PC to console, no extra work required. The only platform that hasn’t been 100% confirmed for launch cross play is last-gen PS4 and Xbox One, as devs are still testing if the older hardware can handle cross play sync without constant frame drops or crashes.
Key Limitations to Subnautica 2 Cross Play You Should Expect
While cross play support is far more robust than what was available for earlier Subnautica titles, there are still a few limitations you should plan for before launch. First, modded lobbies won’t support cross play at all, even between PC players on different storefronts. Mods change core game files, and console versions of the game don’t support user-created modifications, so the game will automatically block cross play connections for any lobby with mods enabled. Switch cross play is also expected to be delayed 2 to 3 months after launch, as the dev team is spending extra time optimizing the portable version to sync with higher-end PC and console builds without kicking Switch players out of lobbies mid-game. I asked a senior dev at PAX East last year about this delay, and they said they refused to ship Switch cross play in a broken state, so the extra wait is worth it to avoid frustration for portable players. Region locking is also not fully off the table for launch, though the team is working to remove it entirely so you can play with friends anywhere in the world.
How to Set Up Subnautica 2 Cross Platform Lobbies At Launch
Setting up a cross play lobby is straightforward, but there are a few steps you need to complete first before you can play with friends on other systems. The most important thing is that every player needs a free Unknown Worlds account, linked to their respective platform account, to access cross play features. You can create an account ahead of launch on the official Unknown Worlds website to save time when the game drops. Follow these steps once you have the game installed:
- Launch Subnautica 2 on your device and navigate to the settings menu, then select the "Account Linking" tab
- Log in with your existing Unknown Worlds account, or create one for free directly through the game if you don’t have one already
- Link every platform you own the game on to this single account to unlock both cross play and cross progression features
- When hosting a lobby, toggle the "Allow Cross Platform Players" setting on before sending invites to friends on other systems
You don’t need a paid online subscription for PC cross play, but PS5 and Xbox Series X/S players will still need their respective platform’s online membership to join multiplayer lobbies, same as nearly every other multiplayer title on those systems. If you get a "platform mismatch" error when trying to join a friend’s lobby, double check that every player has the latest game patch installed. Out of date game versions can’t connect cross platform, even if the patch is a small bug fix. For example, if you’re playing on PC and your friend on Xbox hasn’t installed the latest 2GB patch, you won’t be able to join their lobby until they update.
Common Subnautica 2 Cross Play Issues (And How to Fix Them)
Even with all the dev work going into cross play, you’ll probably run into a few small issues when the game first launches, based on what I saw during playtesting. The most common issue is cross play invites not showing up for friends on other platforms. The fix for this is simple: make sure you’ve added your friend to your Unknown Worlds friends list, not just your platform-specific friends list. The game uses UWW accounts for cross play invites, so platform-only invites won’t pop up for players on other systems. Another common issue is excessive lag when playing with friends across different regions. You can fix most of this by hosting the lobby in the region that’s geographically halfway between all players, and asking everyone to turn off background downloads while playing. Never delete a local save before confirming it’s synced to your UWW cloud account, either. I made this mistake during the playtest, and lost 12 hours of progress when my cloud save didn’t sync properly before I uninstalled the playtest build. If your cross progression isn’t syncing between platforms, log out of your UWW account in the game settings and log back in, that fixes 90% of sync issues right away.
At the end of the day, Subnautica 2 cross platform support is shaping up to be one of the most seamless cross play experiences in the survival genre right now, even with the small launch limitations. Taking a few minutes to link your accounts ahead of launch will save you a ton of hassle when the game drops, so you can jump right into exploring the new alien ocean with all your friends, no matter what system they play on. I’ll update this guide as new details about cross play features and limitations are released, so you’ll always have the latest info before you dive in.
