Hape Quadrilla is a High Quality Wooden Marble Run Construction System. It provides QUALITY TIME for the whole family to play together. The BEST GIFT for your loved ones. It provides endless creative building possibilities and encourages spatial thinking and problem solving. Each of the seven different color blocks has a different function and it's the world's only kinetic marble run! Roundabout has won “Spiel Gut” (Good Toy) Award and Oppenheim Toy Portfolio Platinum Award. Providing over a thousand happy playing hours, Quadrilla is worth every penny. All Quadrilla marble run sets are crafted with heirloom quality birch and rubber wood for long-lasting marble racing fun. Hape Toy finishes are all non-toxic, child safe and of the highest quality. Hape constructs their toys using FSC accredited wood products. Hape toys stimulate children through every stage of development and help nurture and develop their natural abilities. All Hape products meet or exceed all applicable safety standards. Roundabout is the basic entry level for Quadrilla starters. This 91-piece set includes marbles, railways, and a spiral funnel. The Quadrilla Marble Runs are a kid favorite. Designed by Hape toys, the marble run can be leveled or built up with add-ons for more advanced builders. Built to last and be passed down for generations, this is a family favorite that will delight time and time again. Hape's toys stimulate children through every stage of development and help nurture and develop their natural abilities. As with other Hape Quadrilla Marble Run Construction Sets, it combines easily with other Hape Quadrilla products for expansion and unique combinations that will enhance your child's play experience.