LEGO 31120

LEGO Creator 3-in-1 Medieval Castle (31120) Instruction Manual

Introduction

Welcome to the world of LEGO Creator 3-in-1 Medieval Castle (31120). This versatile building set allows you to construct three distinct models from the same collection of bricks: a grand Medieval Castle, a towering Castle Tower with a catapult, or a bustling Medieval Marketplace. Designed for builders aged 9 and up, this set encourages imaginative play and creative construction. Please read this manual carefully to ensure a rewarding building experience and to understand all the features of your new LEGO set.

Product Features

  • Features a LEGO castle toy that rebuilds into a castle tower with a catapult or a bustling marketplace with a water mill, tower and prison.
  • The 2-floor castle has hinges to fold open at the back for easy access, an opening gate, smithy, water mill, king’s room, and a prison.
  • The castle tower is accompanied by a working catapult toy, while the medieval marketplace features a water mill, guard tower, and prison.
  • Includes a fire breathing dragon toy, 3 chickens, and a rat; kids can also power the blacksmith making swords by turning the waterwheel.
  • Includes 3 minifigures – a blacksmith and 2 medieval guards with impressive accessories to add even more fun to kids’ daring adventures.
  • This 1,426-piece large LEGO building set is a rewarding building task.

Setup and Assembly

The LEGO Creator 3-in-1 Medieval Castle set offers three distinct building options. Please note that only one model can be built at a time using the provided pieces. Detailed step-by-step instructions are included in the box for each model. Sort your LEGO elements by color and shape to facilitate the building process.

Model 1: Medieval Castle

Begin by constructing the main castle structure. This model features a detailed two-story castle with a functional drawbridge, an opening gate, a water mill, a prison, and a king's room. The castle is designed with hinges, allowing it to open up for enhanced playability and access to interior details.

LEGO Creator 3-in-1 Medieval Castle main build
Image: The primary Medieval Castle build, showcasing its full structure with minifigures and a dragon.

The set includes a posable dragon figure, three minifigures (a blacksmith and two medieval guards), three chickens, and a rat to populate your medieval scene. The water mill can be turned to simulate powering the blacksmith's forge.

LEGO Creator 3-in-1 Medieval Castle with posable dragon
Image: A child playing with the Medieval Castle, featuring the posable green dragon figure.

Model 2: Castle Tower with Catapult

Alternatively, you can assemble the pieces into a tall castle tower. This model emphasizes defensive structures and includes a separate, functional catapult for engaging battle scenarios. The tower features multiple levels and lookout points for the included minifigures.

LEGO Creator 3-in-1 Castle Tower with catapult
Image: The alternative Castle Tower build, featuring a tall tower structure and a separate working catapult.

Model 3: Bustling Marketplace

The third option allows you to build a vibrant medieval marketplace. This model includes a water mill, a guard tower, and a prison, creating a lively scene for storytelling and role-play. The marketplace design focuses on civilian life within a medieval setting.

LEGO Creator 3-in-1 Medieval Marketplace
Image: The alternative Medieval Marketplace build, depicting a lively scene with a water mill, guard tower, and various market stalls.

Operating and Play Features

Each model in the LEGO Creator 3-in-1 Medieval Castle set is designed with interactive elements to enhance play. The main castle features a working drawbridge that can be raised and lowered, and a gate that opens and closes. The water mill's wheel can be rotated to simulate powering the blacksmith's activities. The dragon figure is posable, allowing for dynamic flight and attack poses. The catapult included with the castle tower model is fully functional, capable of launching small projectiles (included in the set). Minifigures can be placed in various locations throughout the models to create diverse play scenarios.

LEGO Creator 3-in-1 Minifigures for role play
Image: Close-up of the three minifigures included in the set: a blacksmith and two medieval guards, ready for role-play.

Official Product Video

Video: An official product video showcasing the LEGO Creator 3-in-1 Medieval Castle (31120) building kit and its various features.

Maintenance & Care

To ensure the longevity of your LEGO Creator 3-in-1 Medieval Castle set, follow these care instructions:

  • Cleaning: LEGO bricks can be cleaned using lukewarm water (up to 40°C / 104°F) and a mild detergent. Rinse thoroughly with clear water and air dry at room temperature. Do not use hot water, harsh chemicals, or abrasive cleaners, as these can damage the plastic.
  • Storage: Store your LEGO bricks in a clean, dry place away from direct sunlight and extreme temperatures. This helps prevent discoloration and warping.
  • Handling: Avoid excessive force when assembling or disassembling bricks to prevent damage.

Troubleshooting

  • Missing Pieces: If you find any pieces missing from your new set, please visit the official LEGO Customer Service website to request replacement parts.
  • Difficulty Assembling: Double-check the instruction manual for the specific step you are on. Ensure you are using the correct pieces and that they are oriented correctly. Sometimes, a small error can affect subsequent steps.
  • Loose Connections: Ensure bricks are firmly pressed together. LEGO connections are designed to be snug.

Specifications

Brand NameLEGO
Model NameMedieval Castle 31120
Model Number6333046
Number of Pieces1426
Item Dimensions18.9 x 14.88 x 3.7 inches
Item Weight0.3 Kilograms
Material TypePlastic
Manufacturer Minimum Age108 Months (9 years)
Educational ObjectiveCreative Thinking

Warranty & Support

LEGO products are manufactured to high-quality standards. For information regarding product warranty, missing parts, or any other support needs, please visit the official LEGO Customer Service website or contact their support team directly. Keep your proof of purchase for any warranty claims.

© 2026 LEGO Group. All rights reserved. LEGO and the LEGO logo are trademarks of the LEGO Group.

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