id Tech 2

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

id Tech 2, also known as Quake engine, 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