This 37 piece Marble Run game is easy to assemble and provides hours of fun. You can create endless marble runs for variety. 15 marbles are included to watch them run the course. Bright, colorful pieces are made of sturdy plastic. Product Description This 37 piece marble run sets contain an assortment of 22 plastic tubes and ramp pieces, one start funnel, and 15 marbles. Pieces can connect in any combination to make different runs. Easy to assemble and hours of fun for the whole family!