This kit lets you assemble two steampunk-style robots: a rolling train or a walking robot. The models can be reconfigured quickly by rearranging a few parts. An ultrasonic atomizer produces a cool, safe steam effect, mimicking a locomotive, while an LED light enhances the visual display by illuminating the vapor. The set includes an electric motor, circuit board, and ultrasonic atomizer, providing an opportunity to learn about sound waves, ultrasonic technology, and states of matter. A 44-page full-color manual features a comic-book-style story to enrich the play experience. This product was a 2023 Vehicle of the Year Award Finalist by The Toy Foundation and was included in Purdue University’s 2023 INSPIRE Engineering Gift Guide.