Age: 8 Years + The Hubelino Pi marble run system is designed for older children. Pi combines daring physics tricks with creative construction fun. The fascination of constructing tricky marble run racetracks is only topped by the high speed and action-packed tricks and stunts of the steel marble. And best of all, Hubelino Pi is fully compatible with other building bricks, figures and theme worlds. Contains 99 pieces: 29 run elements 65 construction elements 1 baseplate 4 marbles 1 manual Made in Germany.