Subnautica is often praised as one of the best survival exploration games ever made - but for many players, one big question keeps coming up: can you play Subnautica in multiplayer? After spending dozens of hours testing mods, hosting servers, and troubleshooting coop sessions with friends, I can confidently say that while Subnautica doesn’t officially support multiplayer, there is a solid way to experience Subnautica coop using community tools.
In this guide, I’ll explain how Subnautica multiplayer works, how to install the Nitrox multiplayer mod, how to host and join a server, and what problems you should expect along the way.
The official answer is no.
Subnautica was designed as a single-player-only experience, which often surprises players who enjoy coop games and online experiences, including those used to fast-paced online platforms like https://pl.polskiesloty.com/kasyno-online-szybkie-wyplaty/. There is no built-in multiplayer, no online coop, and no local coop or split screen support. You cannot play with friends in the vanilla version of the game, either on PC or consoles.
That said, the demand for Subnautica coop has always been high. Exploring massive underwater biomes, building bases together, and surviving leviathan encounters feels like a natural fit for multiplayer. Because of that, the community stepped in.
The result is Nitrox, a fan-made Subnautica multiplayer mod that allows players to share the same world. While it doesn’t perfectly sync every story element, Nitrox makes it possible to play Subnautica with friends, turning a solo survival game into a cooperative experience.
The Nitrox multiplayer mod is currently the best and most popular way to play Subnautica in coop. I’ve tested it across multiple sessions, and while it has limitations, it’s surprisingly playable.
PC version of Subnautica (Steam or Epic Games Store)
All players must use the same game version
Windows OS
Stable internet connection
Download the Nitrox Launcher from the official Nitrox website or GitHub page.
Install and launch Nitrox.
Link Nitrox to your Subnautica installation folder.
Let the launcher patch the game automatically.
Always launch Subnautica through Nitrox, not directly from Steam or Epic.
A Nitrox server supports up to 8 players. However, from real-world testing, the best Subnautica coop experience is with 2-4 players. Larger groups increase desync, lag, and base-building bugs.
Nitrox works best when everyone plays cooperatively rather than rushing progression separately.
To play Subnautica multiplayer, all players must be connected to the same network. If you’re not on the same physical LAN, you’ll need software that creates a virtual local network.
I’ve personally tested the following tools:
Radmin VPN - free, stable, and low-latency
Hamachi
ZeroTier (alternative option)
All players must join the same VPN network before launching Nitrox.
Hosting a Subnautica multiplayer session is straightforward:
Launch Nitrox Server from the Nitrox installation folder.
Choose Host Game.
Select an existing Subnautica save or create a new one.
Keep default port settings unless you know what you’re doing.
Copy your local VPN IP address (from Radmin or Hamachi).
Start the server and keep it running.
The host’s PC handles the world simulation, so performance depends heavily on the host’s system.
To join a Subnautica coop session:
Connect to the same VPN network as the host.
Launch the Nitrox Launcher.
Select Multiplayer → Join Server.
Enter the host’s VPN IP address and port.
Join the game and wait for world synchronization.
After loading, all players spawn into the same ocean and can explore together.
This is one of the most common questions about Subnautica multiplayer.
Cross-platform play: No. Nitrox only supports PC-to-PC multiplayer.
Split screen / local coop: Not supported.
Console multiplayer: Not possible on PlayStation or Xbox.
Because Nitrox is a mod, not official multiplayer, you should expect issues. Here are the most common ones I’ve encountered - and how to deal with them.
Problem: Players see different creature positions, missing lockers, or broken interactions.
Fix: Avoid solo progression. Save often, and restart the server when desync appears.
Problem: Infinite loading or failure to join the server.
Fix:
Make sure everyone uses the same Subnautica version
Check VPN connection
Disable firewalls or add Nitrox as an exception
Problem: Parts of a base don’t appear for all players.
Fix: Let only one player build at a time, especially large structures.
Problem: Stuttering, rubberbanding, or delayed interactions.
Fix: Reduce player count to 2-4, close background apps, and ensure the host has a strong PC.
Subnautica was never meant to be a coop game - and it shows in places. But thanks to the Nitrox multiplayer mod, it’s possible to experience Subnautica in coop, and when it works, it’s genuinely amazing.
Exploring deep biomes with friends, coordinating base construction, and surviving together adds a completely new layer to the game. If you’re okay with occasional bugs and understand the limits of modded multiplayer, playing Subnautica with friends is absolutely worth trying.
For fans of cooperative games, Nitrox turns a solo adventure into a shared survival story - and that alone makes Subnautica multiplayer something special.
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