LEGO Super Mario Bowser's Castle Boss Battle Expansion Set 71369 – 1,010 Pieces

Bring Bowser's Castle to life

This LEGO Super Mario expansion adds a dramatic boss battle to your Starter Course. With 1,010 pieces, you can build towering castle structures featuring rotating and shaking platforms, along with familiar foes. The setup invites tactile, hands-on play and invites players to remix the layout as new ideas come to mind.

Key components include Bowser, Dry Bones, Boo, and Lava Bubble figures, plus castle towers with action-ready elements. A rotating platform lets Bowser's arms rise and fall as players encounter the Time Block and the Question Block, while a shaking bridge delivers a satisfying, dynamic moment. The model measures over 9 inches tall and offers a broad footprint for group play or solo creativity, while remaining compact enough to tuck away on a shelf when not in use.

What you build and how you play

• Bowser’s Castle Boss Battle expansion features towers with rotating and shaking platforms that heighten anticipation and strategic movement.
• The set includes Bowser, Dry Bones, Boo, and Lava Bubble figures for classic encounters, plus interactive blocks to vary goals.
• Flippers raise Bowser’s arms and unlock access to the Time Block and the Question Block, introducing tactile puzzle elements.
• The layout is designed to be rebuilt and remixed with the Starter Course and other expansions for ongoing creativity.

Play ideas and benefits

• Intuitive Instructions PLUS on the LEGO Super Mario app offer helpful views and tips for building and customizing your course.
• Collectible, family-friendly gameplay supports cooperative or solo play, encouraging storytelling and level design exploration.
• Expandable by nature, it invites quick challenges or long, user-created adventures with future sets.
• High piece count and durable parts encourage hands-on exploration and fine motor development through building and play.

Gift ready and family friendly

Ideal for kids age 8 and up, this expansion makes a thoughtful gift for Super Mario fans and LEGO builders alike. It pairs nicely with the Starter Course for a larger, interconnected Mario world.