I for one am rather dissapointed it didn't turn out well. All joking aside, DN3D still has lots of entertaining qualities we haven't seen turn up in modern FPS games.
Here's a link to some commentary from a former 3D Realms employee that goes some way toward explaining how they ran out of money. It seems the 2001 trailer wasn't actually game footage.
http://csnation.totalgamingnetwork.com/ ... ost1215273
Here's another bizarre link about 'the chair' story. This one looks a bit too ridiculous to be true.
http://gamingisstupid.com/2009/05/06/th ... y-revival/