UR FERTILE CRESENT circa 2,100 BCE One block at a time, the Sumerians built wide, flat pyramids, called Ziggurats, in their city of Ur. Be the first to move your block on top of two of any players’ blocks which are stacked on a foundation block. Stop your opponent’s blocks from moving by stacking on top of them. But watch out! Everyone loses when someone cannot move any of their blocks. —description from the designer