Explore the world of fun and games with the Hape Quadrilla Advanced Coding Play Set. This set is a combination of logic, STEAM principles and a wooden marble run. It includes 50 challenge cards ranging from 'Starter' to 'Expert' levels. You can use it alongside the free Quadrilla App (available for Android & iOS). It mimics the basics of coding as kids find the hidden blocks to unlock the marble run through the right sequence. This toy teaches children the principles of coding and logical thinking. They learn to find the missing blocks to unlock the code. Suitable for children aged six years and above.