So you are interested in helping out, that is truly epic!
First off we ask that you join our group Kisune Workx on Desura by going to:
Then we ask that you use our GIT reponsitory for the latest source code and NOT the source from the game download, you can find that at: Git.xonotic.org
If you need help or have any questions we ask that you use the Source Forge website for the game as we have a forum on there dedicated for these things and it is monitored for new submissions by the lead developer Mirceakitsune.
Thank you for your interest in helping make this into a great open source game!