- http://www.xonotic.org
- http://www.urbanterror.info/home/
- http://en.wikipedia.org/wiki/Id_Tech_3#Projects_based_on_the_GPL_source_release
- http://www.flightgear.org
- http://wildfiregames.com/0ad/ (AoE/Travian like game)
- http://sourceforge.net/projects/warzone2100/
- http://glest.org/
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