These mazes are so fun! The game is a mind teaser puzzle disc that has a plastic maze carved out on the inside. Trapped inside are 3 small metal balls that you can move through the colored maze by tipping and tilting it! The goal is to move the tiny metal balls through the entire maze to get to the center. It is tricky because the divider walls of the maze has doorways open in them in random places so when you tilt it to move a ball into an inner layer, you could accidentally move the others further away if you are not careful. Solve again and again. These are perfect fun for in the car or airplane! 5″ x 5″ 1.5″. Comes in 3 colors.