Thinkfun Geologic Logic PuzzleWorld Changing Logic Puzzle Create your own world with GeoLogic! Players begin with a 30 sided planet Core and 14 different biome Tiles. Each of the 60 Challenge Cards shows a different starting position for some of the biome Tiles, and players must figure out how to position the remaining Tiles in order to complete the planets surface. Explore all 60 world building challenges, or get creative and design your own planets with GeoLogic! Features: 1