The Game itself is not bad. As long as I can see, it looks like Quake,
Quake2, HexenII, DN3D and Turok. There is no free version of it, if you
want to see it, you got to have to buy it.
What do you need to play it fluent?
(aka 3DFX or Voodoo1/2) 3D accelerator
My PPro233, 64 MB, Voodoo1 does about 25 fps at 640x480, with lo-fi sound. You can imagine how it will be running if you possess less than that and want to play with best sound quality.