Posted by: Anonymous Coward
on August 02, 2005 04:35 PM
I second Nexuiz, its a game that I play on a daily basis.
Another one I recommend is Cube <a href="http://cubeengine.com/" title="cubeengine.com">http://cubeengine.com/</a cubeengine.com> . There is almost always players online for both these great First Person Shooters.
Nexuiz is GPL and Cube is zLib (BSD-style) licensed.