Models include: terrain Walker roboar fairy shrimp Bot kangaroobot monkeybot robomouse leopard Crawler and water bear A 44-page full-color manual guides construction of models that Hop creep wriggle and crawl and modular plastic building pieces are compatible with other Thames & Kosmos construction engineering and physics kits. Manufacturered by Thames & Kosmos. Gain hands-on experince building mechanical devices and learn about complex geared systems Models move using a battery-powered motor box (2 AA batteries required not included). Construct 8 awesome motorized Walking machines that move in different ways using gear trains linkages and intermittent gears!