1.1b3 for

Enhance Quake I with OpenGL graphics.

GLQuake is a Quake version that supports 3D acceleration thanks to OpenGL.Flares, dynamic lightning and textures are enhenced and it's Mac OS X compatible.
Release Notes
Special Notes Quake (full version) or Quake Shareware, PowerPC, MacOS 8.6 and later or Mac OS X 10.1 and later, CarbonLib 1.2.5 or later, OpenGL 1.2 or later