Atropos ? A Steampunk Tortoise.
A long time ago there was an island in the middle of the sea. In it lived a people who were prosperous and free. One night a star fell. Sinking half the island into hell. The inhabitants decided to rebuild nevermore shall they be easily killed. They scoured the ruin of the island. Searching for something that would prevent their end. They stumbled upon the remains of the star. And found its ether had magic that would take them far. The magic that they combined with their technology. Gave them a new golden age in their history. For the power they had was shared. And the rule in the land was fair. But one day a ruler could not wait his turn. And forgot that magic ether burns. Now the whole island is in the deep. And the refugees now stuck in turtle ships.
Underground mushroom farm.