Marble Run is a fun game that combines art, physics, STEM, and much more all in one. Your child can enjoy using their own imagination and creating their own masterpiece. The Mideer Marble Run Set includes 100 pieces with unique shapes and colors as well as differently shaped tubes to help you build your creation. The smooth polished tiles in 8 classic colors shine in the sunlight and creates a beautiful reflection. Your little engineer will enjoy hours of playtime with this set.