Age: 3+. Contains: 12 interlocking mats that form a colorful city, 34 foam accessories, 2 track switches (4 pieces), 3 wagons with 6 drawers, and a motorized locomotive. Puzzle-style mat that forms a padded, safe, and easy-to-assemble base. Requires 2 AAA batteries (not included) and adds real movement to the game, making the experience more interactive and exciting for children.