This set is a NAPPA Silver Award winner and allows builders to design and construct 10 different moving machines using LEGO elements. It includes 33 LEGO pieces, 6 plastic balls, string, paper ramps, and additional components. The 80-page instructional book provides step-by-step guidance for assembling all 10 modules, with Klutz Certified clear instructions. The set contains more than 30 essential LEGO elements and is designed for children ages 8 and up.