id Tech 2

Todo: Mention FTE, a notable fork of the Quake I engine. See Quake#Source ports for more info.

id Tech 2 is an engine created by  id Software for Quake, and later modified for Quake II. It was used as the foundation for GoldSrc and all subsequent Valve engines.

id Tech 2 consists of the following two "branches":

• The Quake Engine, developed for Quake and used by several other games
• The Quake II Engine, developed for Quake II and used by several other games

See also

• id Tech 3, the successor to id Tech 2 developed for Quake III.
• id Tech 4, developed for Doom 3