The Building Block Challenge Box is for anyone! Not only is the box a container for the building blocks (compatible with major brands) and the 36 Challenge Cards, but it serves as a base for building your designs. The 36 Challenge Cards included are in 3 different levels ranging from simple builds, challenges using specific colors or amounts of building blocks, and detailed and planned builds. The box includes 80 building blocks and 36 challenge cards. If you are interested in additional challenge cards or building blocks, you can find expansion packs here on our website.