Create your own track for marbles with this clever construction game. The Quercetti Spinning Marble Run contains two new special elements with a simple mechanism that intervenes as soon as the ball falls from the funnel, directing the ball alternately first right then left, thus creating an exciting new track. All 90 pieces (slides, bridges, columns, reels etc) fit easily in endless combinations that will allow you to build vertiginous slopes on which to drop the balls in succession in exciting contests of speed. Creativity is essential in order to build a beautiful, functional marble run. For ages 6+.