I ran a short session of Gamma World for the first time last night with Josh and Liz. Josh rolled a speedster/seismic that he called Rockslide, while Liz played a felinoid/hypercog that she simply named Jingle. Following some advice from the book, I placed the adventure in my local area seen through the shattered lens of apocalypse-vision. The skeleton adventure I wrote up had them going to a shanty town built atop the nearby Beaverton Transit Center before hitting up the ruins of Fred Meyer's looking for power cells to help repair a MAX train so that they could quickly (and relatively safely) get to downtown Portland.
We didn't have as much fun as we could have, considering that I didn't have a lot of time to sufficiently plan an adventure, there were only two players, and it was a new genre for all of us. The game's got a lot of promise, and I think that as we play more, I'll get a better handle on planning adventures suited for post-apocalyptic wasteland-romps. For now, it's back to the drawing board so I can prepare for a lengthy train tunnel throwdown. I'm thinking giant mutant cockroaches, or perhaps graboids?