page_title: Id Tech
hierarchical_section_title: Id Tech
context_page_description: id Tech is a series of separate game engines designed and developed by id Software. Prior to the presentation of the id Tech 5-based game Rage in 2011, the engines lacked official designation and as such were simply referred to as the Doom and Quake engines, from the name of the main game series the engines had been developed for. "id Tech" numbers 1, 2, 3, and 4 have been released as free software under the GNU General Public License, along with the source code to Wolfenstein 3D, Doom, and Quake. id Tech 7 is currently the latest utilized engine.
  According to Eurogamer.net, "id Software has been synonymous with PC game engines since the concept of a detached game engine was first popularised." However id Tech 4 had far fewer licensees than the Unreal Engine from Epic Games, and id planned to regain the momentum with id Tech 5, until they were bought by ZeniMax Media which intends to keep the id Tech engines exclusively for id's sister studios.
context_section_description: id Tech is a series of separate game engines designed and developed by id Software. Prior to the presentation of the id Tech 5-based game Rage in 2011, the engines lacked official designation and as such were simply referred to as the Doom and Quake engines, from the name of the main game series the engines had been developed for. "id Tech" numbers 1, 2, 3, and 4 have been released as free software under the GNU General Public License, along with the source code to Wolfenstein 3D, Doom (id Tech 1), and Quake (id Tech 2). id Tech 7 is currently the latest utilized engine.
  According to Eurogamer.net, "id Software has been synonymous with PC game engines since the concept of a detached game engine was first popularised." However id Tech 4 had far fewer licensees than the Unreal Engine from Epic Games, and id planned to regain the momentum with id Tech 5, until they were bought by ZeniMax Media which intends to keep the id Tech engines exclusively for id's sister studios.
caption: Quake family tree, showing games and engines based on the Quake engine.