The ADKD Marble Run Building Blocks Construction Toys Set is a popular choice for kids who enjoy building and creative play. children can create their own unique marble run tracks and watch marbles race through them. One of the standout features of this set is its compatibility with Duplo blocks, making it a great addition to existing building block collections. It is also compatible with other Duplo-style blocks, which expands the possibilities for building and designing marble run tracks. The set comes with a variety of pieces, including funnels, tracks, and building blocks, allowing children to Construct intricate and exciting marble run designs. The standard size marbles provided with the set are able to spin well in the funnels, providing an engaging and entertaining experience for kids. While the set is not compatible with mega blocks or ping pong balls, it offers enough flexibility and options for imaginative play. The blocks are durable and sturdy, ensuring that they can withstand the hands of enthusiastic young builders.