This also reinforces my need to NOT see the new MLP series, or I would be in danger of becoming a Brony. I'm not stupid, I've learned from my tragic Sailor Moon experience.
I'm old enough to remember what I think now was the ultimate crossover of the late seventies and early eighties. Traveller was a premier Science Fiction Role Playing Game. Dungeons and Dragons, was, of course, the most popular (if not the best) Swords and Sorcery RPG.
EPT was an interesting science fantasy RPG, but if you want officially published crossovers (as opposed to game-crossovers, where you'd want to be looking at the games I used to run and play in during that era), you're talking The Arduin Grimoire.
Crossovers?
The crossover? Empire of the Petal Throne
Re: Crossovers?