The game supports additional maps and character models. and entire ' mods' that can change various aspects of the game. id Software itself created a commercial mod called Team Arena. Id Software released some patches for the game, called PointReleases. Latest version is 1.32c (one has to install the game, then 1.32 PointRelease, and then the 1.32c patch). It does exist a port for the Sony PlayStation 2 console, which is named Quake III Revolution ( Q3R in short), and incorporates stuff from both Q3A and Team Arena, with some other twists. Until 2005, various commercial games used licensed (and modified) versions of its engine (for example, Star Trek: Elite Force, or Star Wars: Jedi Knight 2). On August 19, 2005, id Software released the source code of the game under the GNU General Public License, allowing programmers to use it for free.

ioquake3 uses a modified version of the id Tech 3 engine, resolves some bugs and adds various features, like support for IPv6. ioquake3 source code is under GPL, and you can download the installer for free. but to install it, it needs the textures, maps and 3d models from the original Quake 3, and they are still under copyright of id Software (only source code is free). This means that you must buy Quake 3 to be able to install and use ioquake3, and you can't share freely the whole thing. Since ioquake3 source code is free, it has been used to create OpenArena. OpenArena is totally stand-alone (you don't need the original Q3A) and free: all copyrighted material has been removed, everything has a free license. So, you can play a game very similar to the famous Q3A and use the improvements introduced by ioquake3, at no cost. Id Software itself created a new version of Quake 3, called Quake Live ( QL for short. a working title was 'Quake Zero'), even more Online-focused than the original game. Changes introduced during the years brought some details of its gameplay to noticeably differ from Q3. It used to be 'freemium', while nowadays it has changed to one-time buying game. Quake Champions ( QC in short) game followed in 2017. While it can be seen as a Q3/Quake Live successor, it has got major differences. It has got a free-to-play business model.Ĭompatibility for additional stuff designed for Quake 3 with OpenArena While it aims to keep some classic Q3 feeling, it's however another game, with a more modern engine, with some different weapons and game mechanics (it uses 'champions' as 'classes' of characters with different stats and abilites).

Quake 3 force player model