From storage to stacking! This convenient container is part of the play! The Build & Store Box Set contains 65 pieces and 5 marbles! Easy to construct, continuous, modular marble runs make it faster for children to innovate and build! With 3 build levels from beginner to advanced, your little one can create a wild vertical play set with the container! Then launch the marbles back to the top of the set with the included marble launcher. They can then see the 2 new flexible marble tubes to see marbles twist and turn on their run down to the bottom! Compatible with other Marble Rush sets! (each sold separately).