Wikipedia
Nexuiz is a free first-person shooter video game developed and published by Alientrap. The game and its media are released under the GNU General Public License (GPL) and uses the DarkPlaces engine, a significantly modified Quake engine. A remake, also called Nexuiz, has been released for Steam and Xbox 360 using CryEngine 3. The original game was released on May 31, 2005.
Nexuiz was a first-person shooter developed by Illfonic and published by THQ for Microsoft Windows (through Steam) and Xbox Live Arcade. It used CryEngine 3 and it was based on the original free game called Nexuiz (now called Nexuiz Classic by IllFonic), developed by Alientrap. It was a fast-paced arena first-person shooter in futuristic, Victorian style theme. The servers for the Xbox 360 and PC versions were taken offline in February 2013 due to the closure of THQ.