Links

See the tools page for game engines, software libraries, and programs for creating 3D models, animation, textures, sounds, music and so forth.

Repositories

Free Game Arts open source game resources
http://www.lowpolycoop.com/ Low Poly Cooperative low poly model cooperative (Creative Commons Attribution 2.5 license)
http://telias.free.fr/index.html free the models, content free for every use
http://www.katorlegaz.com/3d_models/ Katorlegaz blender models, licensed under Creative Commons Attribution 3.0 United States
http://www.tellim.com/texture_cd/ blender texture disk (public domain)
http://openclipart.org/ public domain svgs
http://www.freehackers.org/~andi/apalom/index.php open source models
http://rltiles.sourceforge.net/ 2d tilesets for roguelike games, only attribution required
http://www.worldforge.org/ WorldForge, GPL-GFDL double license, has a media repository
http://www.e2-productions.com/bmr the new blender model repository (blenderartists thread)
http://repository.parastudios.de/ Blender materials (public domain) (blenderartists thread)

http://www.openfrag.org OpenFrag, game coode is under GPL, art is under CC-BY
http://www.alientrap.org/nexuiz/ Nexuiz Multiplayer FPS, game data and source are GPL
http://tremulous.net/ Tremulous, source code under GPL, game data under Creative Commons Attribution-ShareAlike License version 2.5
http://boson.eu.org/ Boson, most of the game data is free content
http://torcs.sourceforge.net/ Torcs, game data partly under Free Art License and partly non free
http://hack-and-slash.sf.net Hack and Slash - Action RPG (LGPL)
http://www.spiele-umsonst.de Free and Flashgame - German Communitysite for Freegames and Flashgames

http://openarena.ws/ OpenArena, GPL data replacement for Quake III Arena
http://openquartz.sourceforge.net/ Open Quartz, GPL data replacement for Quake
http://freedoom.sourceforge.net/ FreeDoom, modified BSD (compatible with GPL) data replacement for Doom