Quake 2
Home page: http://www.idsoftware.com/business/techdownloads/
- License: GPL
Download page: http://www.idsoftware.com/business/techdownloads/
- Description: 3D First Person Shooter.
Notes: No free content; engine has known security holes in network code. Someone should make a sourceforge page for quake2 and dump the code there.