1、游戏引擎

Ogre3D游戏引擎

http://www.ogre3d.org/

Quake3游戏引擎

http://www.ioquake3.org/

http://www.vorbis.com/

http://www.libsdl.org/

Irrlicht游戏引擎

http://irrlicht.sourceforge.net/

Crystalspace3D游戏引擎

http://www.crystalspace3d.org/main/Main_Page

Sylphis3D 游戏引擎

http://devnet.sylphis3d.com/

更多3D引擎参考List of game engines

2、游戏

http://red.planetarena.org/

http://tremulous.net/

http://www.wesnoth.org/

http://www.globulation2.org

http://www.urbanterror.net/

http://www.worldofpadman.com/

http://www.scorched3d.co.uk/

http://maniadrive.raydium.org/

http://www.planeshift.it/

只整理一些较大的在架构实现上值得借鉴的游戏，更多右下参看100 of the Best Legal Free Full Version Games You Can Download Online

3、社区

http://www.devmaster.net/

http://freegamer.blogspot.com/

http://www.gamedev.net

http://www.replays.net

4、参考资料

http://en.wikipedia.org/wiki/List_of_game_engines

http://membres.lycos.fr/frochet/3d_engine_list.htm

http://www.cnblogs.com/cyberchen-net/archive/2007/03/04/663597.html

100 of the Best Legal Free Full Version Games You Can Download Online

http://games.slashdot.org/article.pl?sid=07/04/06/1638232