Quake I Video Game Modifications and Add-Ons Engines

• Quakeworld

• FitzQuake  - Shows information about the modified Quake engine and provides the downloadable executable, the source code, and a readme file.
• Fruitz of Dojo  - Contains downloadable files for the MacOS X environment.
• JoeQuake  - Shows screenshots and provides a downloadable version of the tweaked Quake engine that features additional video effects.
• LordHavoc's DarkPlaces Quake Modification  - Disseminates information about the engine that has been used by several freeware, including the popular “Nexuiz”. Shows screenshots.
• Qrack  - Disseminates information on how to install the modified engine. Also showcases a gallery of pictures.
• Tenebrae  - Provides information about the tweaked engine that adds stencil shadows and “per pixel lights” to the game.
• Tremor  - Provides an overview of the changes done to Id’s popular deathmatch engine. Also shows screenshots.