This marble run set gives kids an engaging way to build custom tracks and enjoy fast-paced marble races. It is designed to encourage creativity, problem-solving, spatial awareness, and hand-eye coordination through hands-on play. The set includes 80 blocks, 20 glass marbles, and 10 glow-in-the-dark plastic marbles for added excitement. Its easy-connect design makes it suitable for young builders ages 3 and up. Compatible with marbles up to 16 mm in diameter, it also allows for expanded play with other marbles.