Category:Id Tech 3
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Id Tech 3 is a game engine developed by Id Software for Quake III Arena and has been used in many games under the Quake III Arena engine and Quake III: Team Arena engine brands. In its heyday, it competed with the Unreal engine; both engines were widely licensed.
Id Tech 3 is a substantial improvement from the Quake Engine and Id Tech 2. Although id Tech 3 was derived from id Tech 2, a large portion of code was new or re-written. It was succeeded by Id Tech 4, which was derived from id Tech 3, but had very little of the original code.
At QuakeCon 2005, John Carmack announced that the Quake III 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 ftp site.