The Super Spiral Castle is a novelty set consisting of new control blocks two double spirals xylophone sounding playground and marble stairsThe numerous accessories of the Quadrilla allow you to assemble the wooden marble run completely creative and without assembly instructions (English language not guaranteed)The modular system of the marble run made of wood encourages young and old to build fantastic buildings with many great functionsChildren watch the marbles as they roll on the horizontal track very closely and train their visual perception and handeye coordinationThe construction toy playfully introduces the world of combinatorics and promotes dexterity