LEGO Super Mario fans will love the frightful challenges in this King Boo and the Haunted Yard Expansion Set (71377). To get to the hidden Super Star, players must stomp on Goombas and a spider web, flip a tree and then stomp the spinning Swoops to topple King Boo. Make building this set even more fun with intuitive Instructions PLUS on the free LEGO Super Mario app. It features digital viewing tools and creative suggestions for alternative ways to build and play and is a safe platform for fans to share ideas. Perfect for fun competitions with friends or solo gameplay, LEGO Super Mario toy playsets bring a family-favorite character into the real world. The Starter Course, Expansion Sets and Power-Up Packs nurture kids’ problem-solving creativity.