Create a LEGO® version of the Super Mario™ universe with the Bowser Skeletal Castle Battle Expansion Set (71423). Players explore the castle with LEGO® Peach™, LEGO® Mario™ or LEGO® Luigi™ (not included). The set includes an entrance in the shape of Bowser's jaw, a crane to get the Purple Toad out of prison and knock down Bowser Skelet, seesaws to defeat the Piranh'os Plant and the Goomb'os, an Avalave attack function, a room sports, a secret entrance and room and Key and Treasure Chest action bricks. Note: Starter Pack 71360, 71387, or 71403 required for interactive play. Great gift This great gift for children aged 8 and up includes 5 LEGO® Super Mario™ characters. Download the LEGO Super Mario app for building instructions, tips and more.