Where to Download and Install Nitrox for Subnautica

Updated

Go to nitrox.rux.gg — the official Nitrox site — and use its Download page to get the mod. From there, follow the site's install guide (linked on the homepage as "Read the install guide and FAQ page") before launching anything. Nitrox is a free, community-developed multiplayer mod for Subnautica, and the official site is the only source you should trust for the files.

What you're downloading

Nitrox adds multiplayer to Subnautica: you join or create a server and play survival or creative sessions with other people. The site reports 3.4M+ downloads and support for up to 100 player slots, with native cross-play across supported stores.

Two components matter for setup:

  • The mod itself — the multiplayer code that hooks into Subnautica.
  • The Nitrox Launcher — the tool used to configure and start the modded game. Per the site, the launcher is currently available for Windows.

The mod is listed as available for Windows and Linux, so check the install guide for how your platform is handled before assuming the launcher applies to you.

Steps to download and install

  1. Open the official site. Navigate to nitrox.rux.gg in your browser. Avoid mirrors, reuploads, or third-party download aggregators — the site's own framing is that this is the community project's home, and files from elsewhere carry unnecessary risk.
  2. Go to the Download page. The site's navigation includes a Download entry alongside Home, Guides, About, Community, and Blog.
  3. Read the install guide and FAQ first. The homepage explicitly points to "Read the install guide and FAQ page." This is the step most people skip and then get stuck on — the guide covers prerequisites and the order of operations.
  4. Install the mod and launcher following the guide's instructions for your platform.
  5. Launch through the Nitrox Launcher (Windows) to start or join a server.

Expected result: after a correct install, you can create or join a server and see other players in-game, with the built-in messaging system available for chat.

Before you start: conditions worth knowing

  • You need Subnautica installed. Nitrox is a mod, not a standalone game.
  • Cross-play is built in, so you and your friends don't all need the same store version — the site states native cross-play support across supported stores.
  • Port forwarding is usually handled for you. Nitrox supports UPnP and automatically opens the required ports, which means you generally don't need third-party VPN software to connect to friends. If UPnP is disabled on your router, expect to handle ports manually — the FAQ is the place to check.
  • Version matters. The blog shows active releases (for example, 1.8.0.0 and 1.8.1.0). Players on mismatched versions typically can't connect, so make sure everyone in your group is on the same build.

Common sticking points

  • Downloading from a non-official source. If a file isn't coming from nitrox.rux.gg, don't use it.
  • Skipping the guide. The install guide and FAQ exist because setup has prerequisites; reading them first saves a failed launch.
  • Assuming the launcher is cross-platform. It's listed for Windows only — Linux users should consult the guide for their path.
  • Ignoring the blog for updates. New releases are announced there, and staying current avoids version-mismatch connection failures.

Where to go for help

The site links a Community section for finding servers and talking to other Nitrox players, and the project maintains a Discord presence (the site cites 25K+ members online). For setup problems, the install guide and FAQ page is the first stop; for version news, the Blog.