This is a fun, challenging game that everyone can enjoy. It is handcrafted from Shesham wood. The surface of the 6" diameter disc has been carved with deep grooves, and the entire game has a smooth finish with no sharp edges. Three tiny steel balls have been inserted into the grooves and would not fall out, even if turned upside down. The balls pass around inside the maze track when the toy is rattled, jostled, tipped, and shaken. To win the game, children must place all three balls in the puzzle's middle. Game play necessitates hand-eye coordination, concentration, and problem-solving abilities, all of which help in the growth and development of children in a fun way!