id Tech 3

id Tech 3, popularly known as the Quake III Arena engine, is a game engine developed by id Software for their video game Quake III Arena. It has been adopted by numerous games.

At QuakeCon 2005, John Carmack announced that the id Tech 3 source code would be released under the GNU General Public License (version 2), and it was released on August 19, 2005. The code can be downloaded from id's GitHub account.

Active(Linux) source ports and derivatives:

Star Wars Jedi Knight II: Jedi Outcast

Unofficial! - Git
You'll get to assume the role of Kyle as you wield a unique mix of weapons, Force powers and your lightsaber in both single and multiplayer modes.
Gamers: 3
Rating: 8.7
Popularity: 0


Alpha 50 14 Apr 2016
Unvanquished is a first-person shooter and strategy game created by Unvanquished Development.
Gamers: 6
Rating: 7.3
Popularity: 0

ZEQ2 Lite

1536 5 Aug 2011
ZEQ2-Lite is an open-sourced and mod expandable project based on a highly modified ioQuake3 engine foundation and features many true-to-reference...
Gamers: 1
Rating: 9
Popularity: 0

Turtle Arena

0.6.1 15 Aug 2012
Turtle Arena is a free and open source cross-platform third-person action game using a modified version of the ioquake3 engine.
Gamers: 3
Rating: 7.2
Popularity: 0

Quake III Arena

1.32c 8 May 2006
Welcome to the Arena, where high-ranking warriors are transformed into spineless mush.
Gamers: 12
Rating: 8.4
Popularity: 0

Return to Castle Wolfenstein

World War II rages and nations fall.
Gamers: 7
Rating: 6.8
Popularity: 6

Medal of Honor: Allied Assault

by 2015
1.11-beta3 1 Apr 2006
In Medal of Honor: Allied Assault, you are Lt.
Gamers: 1
Rating: 5.3
Popularity: 0

Heavy Metal: F.A.K.K.2

Years have passed since Julie Strain (a.
Gamers: 3
Rating: 7
Popularity: 0

Smokin' Guns

1.1 8 Jun 2012
The Smokin' Guns game started its life under the name of Western Quake³.
Gamers: 6
Rating: 7.4
Popularity: 0

Wolfenstein: Enemy Territory

2.60b 8 May 2006
Wolfenstein: Enemy Territory is a free, stand-alone, downloadable multiplayer game in which players wage war as Axis or Allies in team-based combat.
Gamers: 10
Rating: 7.9
Popularity: 0

World of Padman

World of Padman is an open source first-person shooter computer game available in both English and German.
Gamers: 11
Rating: 7.9
Popularity: 0


1.1.0 30 Mar 2006
Tremulous is a free, open source game that blends a team based FPS with elements of an RTS.
Gamers: 9
Rating: 6.3
Popularity: 0


0.8.8 20 Feb 2012
OpenArena is a free network enabled multiplayer first person shooter based on the ioquake3 fork of the idTech 3 engine (engine of Quake III Arena).
Gamers: 22
Rating: 8
Popularity: 0

Urban Terror

4.2.x 15 Jul 2013
Urban Terror started as a realism based "total conversion" mod for Quake III Arena.
Gamers: 20
Rating: 8.2
Popularity: 0