This is the 682-piece set that lets kids create courses with elaborate chain reactions like those on social media. Unlike do-it-yourself set ups that require rounding up materials from all over the home, this set supplies everything needed. The pieces snap together easily to design a run with amazing and amusing actions triggered by rolling balls, flaps, levers, zip lines, and more. Just a little push sets the chain reactions in motion. Comes with instructions for building three courses, or young engineers can use their imagination to build a unique run all their own. Made by an award-winning German firm that has been creating high-quality construction sets for over 55 years Ages 8 and up.