The race is on to build hands-on coding skills. Build your maze, and then use the coding cards to create a step-by-step path for Colby, the Programmable Robot Mouse. Program the sequence of steps, and then watch Colby race to find the cheese. This deluxe set includes 30 double-sided coding cards, 10 double-sided activity cards, cheese wedge, and Activity Guide to provide the perfect hands-on introduction to coding concepts. Create your path with 16 maze grids to create a 20" x 20" maze board, 22 maze walls, and 3 tunnels for endless possibilities. Colby lights-up, makes sounds, and features 2 speeds along with colorful buttons to match coding cards for easy programming and sequencing. Add multiple players with Jack, the Programmable Robot Mouse (LER 2841), sold separately. Colby measures 4" L and requires 3 AAA batteries (not included).