Quake 3 open source

ioquake3:

This project, ioquake3 (or ioq3 for short,) aims to build upon id Software's Quake 3 source code release. The source code was released on August 20, 2005 under the GPL. Since then, we have been cleaning up, fixing bugs, and adding features.

Our permanent goal is to create the open source Quake 3 distribution uponwhich people base their games and projects. We also seek to have the perfect version of the engine for playing Quake 3: Arena, Team Arena, and all popular mods. This distribution of the engine has been ported to many new platforms and has had a slew of new features added, along with massive bug extermination. While we don't have PunkBuster (and never will), we do havemore security for servers and clients from various bugfixes which aren't in id's client. Please also note that the name of this project is ioquake3, as derived from the old name icculus.org/quake3. Our gracious hosting benefactor (Subversion and mailing lists) is icculus.org, which is also home to a number of fine projects besides ioquake3. Check out some screenshots!

Para compilar no windows usando MS Visual c++:
http://svn.icculus.org/*checkout*/quake3/trunk/README