DarkPlaces is a Quake modification I have built over the course
of 6 years on and off experimenting, it got somewhat of an
overhaul when the Quake engine source code was released, and I
began developing a custom OpenGL-only engine for it and other
mods, which supports Windows WGL and Linux GLX, and has greatly
improved graphics and image quality. It can not easily be
described, as it is simply an improved Quake, not a total
conversion (yet, anyway). The realism of shell casings falling
to the floor, much improved bullet impacts, 32bit color alpha
blended explosions, blood flying everywhere and sticking to the
walls... Behind the scenes the code has changed a great deal, I
was not content with the original QuakeC code, and I have
greatly changed the engine while maintaining compatibility with
normal quake modifications. LordHavoc  Latest Media