So my reasons for sending the players into Gamma World were two-fold. First and foremost I’d just picked up the box set and thought it would be pretty fun (it was!) Second I’d stumbled on the over-arching idea for the campaign, and I wanted to know if it was something my players would like. However I couldn’t ask them if they wanted to do it without major spoilers.
I am happy to say that the experiment was a success, my players really enjoyed the jaunt, and seemed eager to press on in D&D, but also to return to Gamma World in the future. The stage was set, and once the players made their way out of the ruins of Astridax, I started dropping hints and clues about the overarching meta-plot.