This is an idea that popped into my head while taking a shower just a few minutes ago. But don't be alarmed. It has nothing to do with what I was doing in the shower. As far as you know. And it's not a game proposal. I just wanted to share the idea and see what people think. Mostly I just want to get it down before it leaves me.
What if there was a world built from the remnants of other worlds? Built from all the worlds that have ended. Worlds that have ended in every fashion imaginable and many that are not. A land of the dead for entire worlds. A patchwork of ruined cities and monuments and mix matched wildernesses with nuked wastelands and craters from meteors that fell from alien skies. Every time a world dies new places appear and when the last survivors of that world die so does it's parts in the world. Ripped clean into the void.
All populated by the survivors swept up in the ends of their worlds and brought here. People forging new lives in the remnants of old worlds. Having and raising children there. Some human, some not. Some so far from human that there very existence is a threat to mankind. Empires have been born, raised, and died without ever having known a true world of their own. Magic, alien science, and psychic abilities exist along side the riveted junkyard tech of the setting.
So this my idea. Planescape meets Post Apocalypse. A thousand worlds in one giant junkyard of a setting built from endless apocalypses. What do you think?