LEGO Super Mario: Bowser's Castle Boss Battle Expansion - 1010 Piece Building Kit [LEGO, #71369]Players will love the flipping, shaking and balancing challenges in this LEGO Super Mario: Bowser's Castle Boss Battle Expansion Building Set 71369. Match LEGO Mario against Bowser in real life! A brilliant gift for kids to add to the LEGO Super Mario Starter Course (71360), this castle toy playset features towers with rotating and shaking platforms, flippers to raise Bowser's arms and access the ? Block and Time Block, a shaking bridge, plus Bowser,