Bring the Jurassic Period to life in your home! The K?NEX Beasts Alive Building Set offers you and your children a chance to experience the amazing world of dinosaurs by creating your own. Build a K'NEXosaurus Rex with the 255 vibrant parts and pieces included in this set. All parts are well-constructed plastic. The package also includes iconic rods and connectors that snap together to make customizable figures. Children can also make alternative Beasts Alive structures with this set. It includes an additional model for a Megasaurus dinosaur. Enjoy playing with them with friends anytime you want! The K?NEX Beasts Alive Building Set also includes a battery-powered motor to operate the structures. Watch your dinosaurs come to life! This building set also has downloadable step-by-step instructions for two motorized builds. Each STEAM toy kids can make is designed for a more exciting playtime. Promote your kids? development of STEAM (science, technology, engineering, arts, and math) concepts by igniting their natural curiosity and creativity. Building with K?NEX puts children on the path to a fundamental understanding of STEAM subjects. Let them design, construct, and customize their own K?NEX Beasts Alive structures and enjoy hours of fun playing with them.