http://www.legendsworld.net/shooter/year/1995#1779
All the downloads here are no longer available. This is a shame, as literally the only other place on the entire internet I could find a download for 3DGCS was a copy on the Internet Archive that only featured the base program for DOS version 1.3 with none of the add-ons. If somebody's still got the versions that were once available here with the Mega Art Pack and GCSMenu or the 3.x versions that were for Windows and had model support, it'd be nice to have access to those again.