This is part of a LEGO kit we got Finn for Christmas. It’s a technical set that includes a motor drive, motion sensor, and secondary motor element. We built a tracked robot that is programmable through a tablet app to move in 360˚, make sounds, shoot a shoulder-mounted projectile, move its head, and recognize sound and movement. The whole thing was accessed through the app, including the build process. She and I had a blast putting the whole thing together at the dinner table.