This Lego set introduces little ones to creative building and endless imaginative fun with 2 of the most iconic comic book characters: Batman and Joker. The accessories, including Joker's stolen money and Batman's cape, helmet, and Batarang™, help inspire imaginative role-playing. A Starter Brick car chassis helps kids build the Batmobile "on their own." A colorful illustrated story serves as a building and play guide, and for extra digital fun, builders can zoom, rotate the sets in 3D, and track their progress using the fun LEGO Builder app.