Yeah, they had Gamma World and such as well, of course (never looked into it much, so I don't know much about it, except that stats/rules seem to be different).
Yup, Expedition of the Barrier Peaks (Greyhawk) is one of 'em. City of the Gods (Blackmoor, published for basic D&D) is another. I can't think of any others, actually, although I think they are out there...
Did L11 Needle have some? I forget...