The pack of eight FFA/duel maps by Dennis "headshot" Kaltwasser and Dan "Danimal" Proietti was a big influence on the layout, construction and texturing in DM maps for Quake and (especially in layout concepts) for future Quake sequels.
The initial Da Pak release included a serverside mod that provided some nice features at the time, but any modern Quake competitive mod will cover most or all of those concerns now. You can extract the map bsp files from the release's pak0.pak and use the...
