Marble runs really are are one of the greatest toys for both boy's and girl's! Hours of fun not just for the kids but all the family! This set is the most fabulous of all marble runs! With endless opportunities to construct new tracks! Including fabulous new extensions such as the xylophone rail, and two sided spiral twists. This Marble run is one of the biggest and best sets, in the Quadrilla range. In this Super Spiral set, the two-sided spiral twist will double the fun. Spirals can be arranged to either spiral marbles inward in a concave position dropping them through the centre or, spiral the marbles outward in a convex position, this will drop the marble on the outer ring. Start by building one of the layouts pictured on the box. Watch your marbles navigate the spiral twist, blocks and transparent stairways and ring the bells as they race down to the catcher. Now use your imagination to build your own fantastic marble runs! The Hape Quadrilla range has been praised by The Wall Street Journal as the perfect toy for teaching kids how to code. This German engineered design, inspired by Da Vinci Circles will help your child to develop special thinking as well as an understanding of Science, Technology, Engineering, Arts and Mathematics (STEAM) principles This is a big box toy, but totally worth the investment as it really will become a firm favourite.