This set contains a full set of 14 pieces of terrain, which include the same ones available in the Starter Box, and adds another set of 6 different designs. This terrain is high-quality 2mm board stock material, and easy to put together. Combine it with a first set to get a large play area or a densely packed one. This set also includes a poster paper play mat of 45x34" (inches) on which to play your battles.