Before Quake3 was released, there were a number of Q3Test releases. It was an exciting time in 1999 from about May to about December before the final demo and retail release. Q3Test releases were made for win32, linux and mac. I was mainly a win32 and linux user at the time and getting GLX/OpenGL working on linux at that time was hard work. Anyway, during this time many mods and hacks were developed for the Q3Test.