Volant

From publisher blurb: StarCluster 4 - Volant is a game set on a magical post-apocalyptic world, where no human has magic, but the animals, plants, and the stones are full of it. The surface of the world is full of monsters, and only scattered nomads live there. Civilization is only possible in the skylands - floating islands in the sky. Ships made of floating stone fly between them, and riders of giant birds and bats make war in the air and explore the surface.