Children fit the rugged plastic pieces together to create action-packed marble mazes, with dips, drops, hairpin turns, and more! The pipes are translucent and can be left open, allowing kids to follow the marble as it rolls up and down through the track. It also improves problem-solving skills. It not only increases the mutual relationship between parents and children through playing together but also enhances the teamwork ability between playmates by constantly exchanging ideas and completing work together.