Wonderology Rube Goldberg The Trick Shot Challenge STEM Spin Master BRAND NEW Discover gravity and energy transfer! How it works: Basketball hits bowling pin (A) causing a chain reaction of falling pins (B) allowing the hocket stick (C) to drop and set the weight (D) in motion. Weight rolls into baseball glove (E) causing boot (F) to kick basketball (G) down skis (H) and bounce off table up into basket (I). The ball then rolls out of garbage can (J) and continues on to trigger another contraption! BRAND NEW and SEALED in original packaging. Please see photos for condition of box.