LEGO Super Mario Reznor Knockdown Expansion Set 71390 – 862 Pieces

Overview

Start a new chapter in your LEGO Super Mario journey with the Reznor Knockdown Expansion Set (71390). This 862-piece kit expands your world with buildable rotating platforms that come alive when you turn LEGO Mario or LEGO Luigi on the connected stand. As the platforms spin, you’ll twist, tilt, and time your moves to bring the action to a new level. The Skewer gives you a way to knock enemies off and the Blue Toad sits at the top, awaiting a rescue. Add the seesawing Grrrol, a Block, and a Special Pipe: Speed Run to stretch the play possibilities. Note: a Starter Course (71360 or 71387) is required to play.

What’s in the box

• 862-piece build that unlocks a fresh set of challenges
• 2 Reznors figures, a seesawing Grrrol, and a Blue Toad
• Block and a Special Pipe: Speed Run for extra rewards
• Skewer tool to knock enemies off the platforms
• All the pieces you need to build the rotating platforms and stand

How you can play

• Solo adventures or connect via Bluetooth to another player’s LEGO Mario or LEGO Luigi
• Try speed-run style challenges or cooperate to earn bonus coins
• Build, customize, and integrate with compatible Starter Courses for expanded levels

Why this set matters for your collection

Beyond the obvious display value, this expansion invites hands-on, open-ended play. The rotating platforms create kinetic action that rewards timing and experimentation. The included Blue Toad adds a clear objective, while the Skewer and Speed Run elements introduce quick, repeatable tasks that encourage replayability. As a collectible LEGO set, it pairs well with other Super Mario kits to help you craft unique levels that reflect your kid’s play style and imagination.

Compatibility and digital support

The LEGO Super Mario app provides building instructions, inspiration, and ideas to expand creativity. The set is designed to work with compatible Starter Courses (71360 or 71387), and when paired with a friend’s LEGO Mario or LEGO Luigi, it opens up two-player play with cooperative or competitive options.

Ideal as a gift

With its bold characters, bright colors, and engaging play patterns, this 862-piece expansion makes a thoughtful gift for kids aged 8 and up who love Super Mario and building sets.