Multiple set sizes and levels of difficulty for progressive building and play
Base grid included for added stability and creative structure options
Guided and open-ended builds encourage problem-solving and engineering skills
Summarized by Shop
A truly mesmerizing marble-track experience!
Each set is made up of hollow stacking cubes and a variety of perfectly flat tracks. The paths cut out of each track widen almost imperceptibly from one end to the other, creating an invisible slope that propels the marbles forward.
Watching them go is like magic in slow-mo!
