A combination of logic game, wooden marble run, and STEAM toy that’s one of the best gifts you can buy for boys and girls age 6 and up, preschooler, primary schooler, Junior high schooler. Arrow mark printed on the blocks indicates the functions of the different color blocks. Unlock the Question mark block on the challenge card & Magically change the marble arrival sequence. Multi-Level challenges: come with 30 Challenge Cards from Starter to Expert, perfectly matching the Logic Game difficulty level. Free Quadrilla App for Android and IOS offers great learning and sharing platform for the Quadrilla Players. Long time Screen off play: a great tool for kids to learn to code, the endless fun last for years. Develops critical skills – Playing your way through the challenges builds spatial reasoning and planning skills. And is partly an engineering and building toy that provides a great stealth learning experience for young players. Learn to Code.Package. Contains 90 pieces. Ages 6 and up.