Build a super cool marble action course using the comprehensive building instructions and 102 pieces, or let your imagination run wild and build your own marble run. Place a few marbles in the basket, and it will automatically tilt forward, dropping them into the funnel. Then discover the secret passages, paths, and curves the marbles roll through, and help them along their way with the corkscrew tunnel and elevator. Take on exciting challenges alone or together with friends and family. The cool light and sound effects add even more fun! Includes 10 marbles.