Build your maze, then use the coding cards to create a step-by-step path for the Programmable Robot Mouse. Program the sequence of steps, then watch the mouse race to find the cheese! This deluxe set includes 30 double-sided coding cards, 10 double-sided Activity Cards, a cheese wedge and an Activity Guide for the perfect hands-on introduction to coding concepts. Create endless maze possibilities with 16 maze grids, 22 maze walls and 3 tunnels. The mouse lights up, makes sounds and features 2 speeds; it measures 4 in long and requires 3 AAA batteries (not included). Size: 41.4 x 32 x 7.9 cm. Ages 4+.