Spin-offs

Quake III Revolution
Quake III Revolution is a fusion of Quake III Arena and Quake III Team Arena. This port got mixed reviews, as it received controversy for the lack of mouse and keyboard support as well as the lack of online gameplay. However this game was one of the first games to show the potential of the PS2. In Split-Screen mode, the screen is divided up to a maximum of 4 segments, depending on the amount of players.

Enemy Territory: Quake Wars
Enemy Territory: Quake Wars (ET:QW) is a first-person shooter video game, and is the follow-up to Quake 4. It is also the first game in the series rated T by the ESRB (with the descriptors of Mild Language and Violence. Mild Blood is featured but only on the PC version). It is set in the same science fiction universe as Quake 2 and Quake 4, with a minimal backstory serving as a prequel to Quake II. It is the second multiplayer-focused game in the Quake series (after Quake 3 Arena). Quake Wars features similar gameplay to Wolfenstein: Enemy Territory, but with the addition of controllable vehicles and aircraft as well as multiple AI deployables [1], Enemy Territory: Quake Wars asymmetric teams, much larger maps and the option of computer-controlled bots. Unlike the previous Enemy Territory games, Quake Wars is a commercial release rather than a free download. Enemy Territory: Quake Wars was developed by Splash Damage for Windows using a modified version of id Software's id Tech 4 engine with MegaTexture rendering technology. It was released for the Xbox 360 and PlayStation 3 on May 27, 2008. On March 18, 2008, Aspyr Media released the title for Mac OS X.

Quake Live
Quake Live is the newest installment in the Quake series of first-person shooters, designed by id Software. It is a modified version of Quake 3 Arena: Gold. First announced in 2007 as a free-to-play browser plugin based game, it entered invitation-based closed beta in 2008, and was opened to all on February 24, 2009, and on August 1st, 2010 Quake Live was fully released and 2 pay to play choices were made: Pro and Premium. Pro and Premium players get maps and game modes that are not usually seen by players. Quake Live is now exclusively available on Steam, with Steamworks integration for community generated content.

Quake Plus 3D
Quake Plus 3D is a mobile game developed by M3GWorks (known for J2ME adaptation of Counter-Strike 1.6 named Counter-Attack) for J2ME-enabled phones. Only single player is available. There were plans for a multiplayer version but it was later scrapped.