Archon ---> Quake. You heard right, elements of the 80's micro game archon extrapolated into the Quake universe. Get ready for a wild ride. (free stuff | no warranty | see disclaimer.txt | blah blah blah.)
For testing purposes I have the cubes set to transparent. The internal planes make a cool 3D effect.
Funny thing is, now that 6 months have slipped by, I dont recall what test required transparent cubes!