OpenNox is a backwards-compatible recreation of the classic Westwood RPG game Nox.

Find the game on Patreon, Discord, Noxcommunity.

How to install OpenNox (Windows)

This guide explains how to install OpenNox on Windows.

Posted by on (updated ago)


  1. Install original Nox (see: GoG or Origin). Prefer locations outside of "Program Files".
  2. Download latest OpenNox installer. Use .exe file for Windows.
  3. Install it to any directory (shouldn't be the same as Nox itself).

Playing HD version

  1. Go to OpenNox installation directory.
  2. Make a shortcut for opennox-hd.exe.
  3. Run it!

Note: HD version will not join public non-HD servers! This is done for fairness reasons, since not everyone runs OpenNox in HD. But you can still host your own server for your friends to join.

Playing non-HD version

  1. Go to OpenNox installation directory.
  2. Make a shortcut for opennox.exe.
  3. Run it!

Note: non-HD version will not join HD servers. Make sure to run the same version when playing online.


OpenNox doesn't start

First, try running OpenNox with Administrator permissions. If it works, when your Nox copy is likely installed in the protected folder like "Program Files" which causes issues. Delete OpenNox folder, reinstall Nox to some other folder and install OpenNox again.

If it doesn't help, open opennox.yml in OpenNox installation directory in a text editor (Notepad++ is a good option). Find section similar to this:

  data: C:\Games\Nox

Change the path manually to a folder where your copy of Nox is installed. Restart OpenNox.

If it still doesn't work, please ping us on Nox Discord in #tech channel. It will help if you share opennox.log located in log folder in OpenNox install directory.

Can't connect to a server: Version mismatch

As was explained in the installation section, HD and non-HD versions won't join servers of the opposite version. Most online servers still run non-HD version, so if you want to join them, you must run non-HD version of OpenNox as well. Make sure to try a correct version when joining a server.


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