Unique marble run with marbles propelled by widening tracks
Encourages spatial reasoning, creativity, engineering skills, problem-solving
Tracks suspended by hollow stacking cubes
Builder and Deluxe sets - features base grid for added stability
Follow guided builds or invent your own structures!
Builder set includes 1 catcher, 1 topper, 55 risers, 5 stainless steel marbles, 10 unique tracks, base grid