Can you escape the castle's rotary tower? Watch the marbles twist and turn on castle escape marble run by Hape! With 102 pieces let your creative side flow with endless possibilities and hours of fun to be had with two transparent stairways and three hanging bells that the marbles will ring on the way down. Have marble run races with your friends and family! Age: 4 years + the Quadrille castle escape is one of several types of marble runs in the Quadrille line. There are endless possibilities for 3-D thinking and engineering development. Hape Quadrille marble runs help children to develop spatial and reasoning abilities, and has even been highlighted as a developmental tool for computer programming by the wall street journal. Designed to engage kids in early STEM development, The Quadrille system encourages problem-solving and keeps little engineers coming back for more fun!