The Grassfires of Veldstar

The planet of Veldstar is a peaceful one. The eyefolk of the grassy plains live in sprawling villages of mud huts and stone mazes. They grow magical crystals made of time--each village collectively sacrificing bits and pieces of their lifespan, just a second here and there, to slowly daub together shimmering mineral growths of hyper-concentrated chronal energy. These crystals have saved them in the past, giving them time to respond to disasters. For centuries their stone fortifications have kept out wild animals, shielded them against sandstorms, and partitioned their villages so fire can't easily spread. But one day... Source: The Ludum Dare Game Jam entry.