Moderators of the wildly popular VORPG, Polyworld, had no idea that one of their most famous cites Edotown had been stolen and for quite some time. No wonder there were so many complaints and bug reports coming in.
A world whose lands are made up of huge terrain spheres that rotate constantly with most portion underwater. As time passes, the shape of the bodies of water change, landmarks shift inside the new border lines, and mountains tilt to different degrees. Land dwellers are gypsies that can never build anything permanent, and somewhat ironically, the only stable settlements are large structures built at sea.