If you do not have a 3Dfx graphics card/drivers, you need to perform the good old “delete opengl32.dll” trick. Then it runs fine (at least on Wine). On the surface it seems like a fairly vanilla GLQuake but you cannot run the “valve” mod in a stock Quake engine properly. Included are some techdemo maps, demos and stuff. Definitely interesting for both Half-Life and Quake enthusiasts.
I have a really old Power Mac 8500 from 1997 which has a Voodoo 5 5500 in it. Very nice card, but unfortunately the original Half-Life port for Mac was cancelled. I wonder if some early version of it exists somewhere… stashed on a long forgotten hard drive.