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.)
Just discovered this whilst looking for some debug info - this is one cool freaking effect. If it looks cool on a bunch of different maps, I can say for sure it will feature in Chaos Archon.
Note: effect starts at 1:32 in the video
Oh yeah - the map can be downloaded here - Moddb.com
Before there is any confusion, it is a quake 3 map...which darkplaces can load. but only the chaos archon mod will translate all the q3 items. Already planning to update this map so it will run with any mod under darkplaces.