The Inverse World – so named by outsiders, who came from beyond the world’s crust. Inside, they found a massive, windy void, with a glowing star shining in the center. A ring of islands orbits this star, and far above lies a ceiling of stone. The Inverse World is on the inside of a planet, and could even be inside of an already existing campaign world, if you dig deep enough.
The locals call it a different name, however: Invells. Invells is a mystical place, where an imprisoned god casts light and rain up to the top of the world, and then it all drains back down to the center. The great god Sola is trapped in the center of Invells, a massive burning star that created the light and rain from which all life in Invells was formed. Well, most life.
Invells is a bizarre world, filled with all manner of flying fish, strange monsters, wondrous machinery, and Sola’s children, the three spirit-blessed races. Airships, great chains, and winged angels bridge the open gaps between the floating islands. Shanty towns of wood and iron cling to the top of the world. Great cities of light and gold are hidden within the sea of clouds surrounding Sola’s cage, a molten sea of gold with a god trapped inside. There is much to see, and all of it is just out of reach.