Nexuiz is een opensource-3d-shooter voor Windows, Linux en Mac OS X, die gebaseerd is op een flink verbouwde Quake-engine. In maart 2010 is het spel echter onder licentie van spelstudio IllFonic gekomen, met de bedoeling er een consoleversie van uit te brengen. Niet iedereen was hier even gelukkig mee en er is een afsplitsing onstaan onder de naam Xonotic. Eind december is de eerste publieke uitgave beschikbaar gekomen en deze wordt met de volgende release notes geleverd:
Xonotic 0.1 preview
The last release of Nexuiz (2.5.2) was on the first of October 2009, and when we decided to fork early March 2010 we continued where we had left off with Nexuiz. Large parts of the code, graphics and music have been redone and have improved immensely. In over a year we have managed to make huge progress on pretty much every part of the game. However this release is still a preview, which means that bugs are likely to exist and that some of our decisions turn out to have unwanted side effects. This first preview also still has a limited number of maps, but we do have many maps being worked on for future releases! In the next sections we will explain what new features are available and the main things that have changed from Nexuiz.