?FOLLOW BLACK LINE ROBOT? The robots equipped with optical sensor so that it can follow every route you draw out with black pens. ?PLAN YOUR ROADS & COMPETE? Package includes 70 pcs paper puzzle cards, kids can build roads and pathways for the robot, watch them move through or compete with your friends who can create the longest route. ?MORE FUN TO PLAY? Use paper cards to block black lines and lead the robot in the direction you want it to go. Challenge your friends to see who reaches the middle first. ?70 PCS PUZZLE? Putting the puzzle together is a good physical challenge for children, boosting their developing motor skills and improving their hand-eye coordination. Puzzles are made of natural wood, which is healthy and sturdy. ?IMPROVE STEM SKILLS? An adorable that inspires creativity, logic, problem solving and fine motor manipulation skills. Best gift for kids birthday, party, parties, Christmas gift & many happy moments. Recommend for kids age 3+.