Hape CliffhangerGet closer to the Quadrilla action with three gutters that make your marbles race around the outside of the colored blocks on their way to the bottom. Looks cool and extends run time. Marble run construction toy made with durable wood and non toxic, water based paints Spiral gutters create more run time and bring you closer to the action Catcher makes it easy to collect marbles at the end of run Endless possibilities for reconfiguring the layout.