So we have seen some people do Futuristic Post Apocalypse, we have seen some do the Magitek thing. What would happen to a world where the Magitek society rises to power then falls to ruin?
What happens when the Empire that united the world under a single banner ceases to be in a night of horror.
This is the campaign I am designing, and while I am full of ideas for it, among others the Sands of Ruin, a plain of desert not unlike the Sahara made of black basalt silica sand, if it is on magical surfaces and users negates spell power, a magical train of sorts bullets around the continent, always on time, always in a rush, and controlled by a hive intelligence of ai driven constructs who will help you with your bag and luggage but turn on you the moment you make the train late, and the last great airships, piloted by a race of sentient squirrelfolk breed to maintain them in the air who now worship their floating city sized homes as roaming clan hall fortresses.
What I don't have is enough ideas, I don't think there could ever be enough ideas to fill a world like this. So I come to the Paizo community, and ask nicely. Fill'er up boys and girls, let em fly, the crazy, the sane, the kooky, I want feedback on the idea itself and how you think it would affect the feel of a Roleplaying world...
Anything you think a world like this has too have, or could live without?
Post-Apocalyptic things generally have a lot of broken, dangerous things.
Broken, dangerous magical things tend to be very dangerous indeed. XD So you'll probably want to consider how to work that in. At the moment, your game sounds rather Mana Wastes-y, but I highly recommend figuring out some ground rules for how all of that works. That will have a big impact on the rest of the world, so it's important to figure it out early.
Liber Influxus Communis has rules for a bunch of new haunts, magical radiation, and two templates to put on magically irradiated monsters. Might be up this campaign's alley?
Im actually working on my own setting that is pretty much this. Modern tech combined with mostly arcane magic ultimately led to a war that wiped out the core races and a lot of others. Its a planet infested with undead, biological weapons, aberrant mutants, and tons of outsiders pulled in from portals opened during the mana storms that wrack the world.
Fun fact: I created the concept here on the random race worldbuilding thread.