This is a large version of a classic stacking game.  We made (3) different heights starting with the standard (54) pieces and then reduced it to (45) and then reduced it again down to (36). Once we accomplished this it then became clear that we needed to make a version 1/2 the size so when played by younger children the pieces weren't so clunky and a bit easier to handle. And again we made the (3) different sets in (54), (45), & (36).