Role Playing Game from a Mailbag???

A while back someone sent the guys a pen and paper RPG boxed set. Does anyone remember what it was (it wasn't Pathfinder)?

The only one they sent beside pathfinder was Gamma World. Beware new players to the genre tho. It's based on D&D 4th Edition rules an ive heard the included rulebook leaves some minor-major holes.

I thought you were going to start doing some real tin-foil hat shit and say that GB was doing a weird ARG by leaving clues in the last mailbag. Kind of disappointed.