8 years & up. Travel to the peculiar glowing Blox city with Seymour E. Blox and help him make some emergency repairs. This set features a suspenseful story that teaches children about the dangers of pollution and the wonders of engineering all while they follow Seymour E. Blox on his nightly adventures. Included blocks work with and enhance most classic building block sets. Requires a 9V battery (not included). Included: 12-Page storybook with instructions for 8 building models and QR codes that lead to fun online resources. Also includes a variety of building blocks: tin plated blocks, LED blocks, and more.