"Wait!" I hear you all exclaim, "The Dungeon Crawl Classic RPG is fantasy not science fiction!"
Au contaire! And allow to enlighten you as to why. First of all, DCC has laser guns and hi-tech "stuff' in it. And this is quite acceptable; think of Arneson's Blackmoor and Bledsaw's Wilderlands, and yes, even Gygax's Barrier Peaks. All had some ray guns and fallen ancient civilizations. Vance's Dying Earth, anyone? Saberhagen's Empire of the East? It's a trope that has legs in the sci-fi genre. And one I'm willing to exploit for my game. This brings us to the second reason: I'm converting a setting.
As I have stated many, many, many times in the past, I started gaming with 1st edition Gamma World. The greatest linear-adventure-combined-with-sandboxy-goodness is GW1 The Legion of Gold by Gary. For all genres and games. Ever. Yes, there is a linear four act plot, but there is also a wealth of background and setting material for the Barony of Horn and its environs. Even after the threat of the Legion of Gold is ended, there is plenty to do in the area. Factions, while not detailed, are hinted at. The university is an enclave of the Restorationists who despise the feudal trappings of the barony but happily take the baron's money. The Baron has knights who are attended by squires who carry the knight's laser weapon for him. The Baron has an armory and a garage, oh, and by the way, it's rumored that his family is really mutant in nature and have gnarly mental powers. Mutants may only enter teh cit through the farmer's gate. Lairs of tribes, family units, and individual creatures are numbered and placed on the campaign map but, again, other than stats and a couple of lines of notes, no detail is given. The whole campaign setting (because that's what it really is, in module form) is perfect for fleshing out. this is B2 The Keep on the Borderlands but polished and refined.
So, how does this setting work for DCC? Well, I already know that it needs work to convert. And, naturually, there will be some stylistic differences...I have to downplay the tech and add the mystical. but I have a skeleton, a framework with which to play. At the very least, it's an idea to play with: DCC in the Gamma World. Maybe.