It is a very challenging game that requires some degree of skill from your dog. The difficulty level varies from 1 paw to 4 paws by adding and removing numbers of tokens (hats and cylinders) from the structure. This puzzle comes with 6 drawers and 8 of each kind of tokens. The game challenge can be increased by purchasing additional hats to a staggering 31 tasks! It is one of our all-time bestsellers and dogs and their parents have a lot of fun playing with it.