Nitrox is a free multiplayer mod for the game Subnautica developed by the community.

Joining a server Want to join another server? Learn how to add and join other Nitrox servers and play Subnautica multiplayer. Read more

Oct 20, 2025 · Download Nitrox: a free multiplayer mod for the game Subnautica developed by the community.

Joining a Nitrox Server How to join and play multiplayer on a Nitrox Server for Subnautica.

If you or others can't connect, make sure that both you and the host of the server have a firewall exception for the Subnautica.exe and NitroxServer-Subnautica.exe

Why Nitrox? Multiplayer. Play Subnautica how it was intended to be played, in Multiplayer. Open source. Regular support and updates from the generous contributors. Community. Find new servers, get help …

Get started by installing the Nitrox Mod. Follow the steps carefully and you will be ready to play in no time!

Nitrox features a powerful multiplayer server, all while being extremely lightweight and resource efficient.

Get started by installing the Nitrox Mod. Follow the steps carefully and you will be ready to play in no time!

Discord Join our active Discord server to find servers to play on, get help from the support team and much more. Join on Discord chevron_right