Here are a bunch of interconnected ideas for a world to role play in, plus some ideas for individual role plays. Feel free to plunder as you will, and to add or subtract. I know I need to develop the South more.
The world is contained with a massive sphere of unknown composition, divided into two halves. Myths abound as to what lies beyond the Vault of Sky, the top half, or the Bowl of Earth, the bottom half, but regardless of their other claims, all state that those who breach the Vault or Bowl do not return. The sphere is filled in two equal halves, the upper half the of the sphere being filled with gases of various sorts, though it va