I believe that few authors are so imaginative and visionary as Clark Ashton-Smith. Imagine a campaign settings with this description:
"The sand of the desert of Yondo is not as the sand of other deserts; for Yondo lies nearest of all to the world's rim; and strange winds, blowing from a pit no astronomer may hope to fathom, have sown its ruinous fields with the gray dust of corroding planets, the black ashes of extinguished suns. The dark, orblike mountains which rise from its wrinkled and pitted plain are not all its own, for some are fallen asteroids half-buried in that abysmal sand. Things have crept in from nether space, whose incursion is forbid by the gods of all proper and well-ordered lands; but there are no such gods in Yondo, where live the hoary genii of stars abolished and decrepit demons left homeless by the destruction of antiquated hells."
The finest material for gaming in my opinion. A great week to you all!