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| Weight & dimensions | |
| Package weight | 1 kg |
| Package depth | 382 mm |
| Package height | 70.5 mm |
| Package width | 262 mm |
| Package type | Box |
| Package volume | 7.056 cm³ |
| Energy management | |
| Batteries required | ![]() |
| Packaging content | |
| Batteries included | ![]() |
| Features | |
| Material | Plastic |
| Product colour | Multicolour |
| Country of origin | China |
| Product type | Building set |
| Theme | Ideas |
| Number of pieces | 1125 pc(s) |
| Suggested gender | Boy/Girl |
| Sound effects | ![]() |
| Recommended age (min) | 18 yr(s) |
| Recommended age (max) | 99 yr(s) |
| Logistics data | |
| Master (outer) case height | 280 mm |
| Master (outer) case width | 229 mm |
| Master (outer) case gross weight | 3.33 kg |
| Pallet gross weight | 158.3 kg |
| Pallet net weight | 120 kg |
| Master (outer) case length | 398 mm |
| Master (outer) case GTIN (EAN/UPC) | 5702017230412 |
| Master (outer) case net weight | 3 kg |
| Master (outer) case volume | 25.52 cm³ |
| Harmonized System (HS) code | 95030035 |
| Pallet length | 120 cm |
| Pallet width | 80 cm |
| Pallet height | 126.5 cm |
| Pallet volume | 1214.4 cm³ |
| Safety warning | |
| Safety warning | Warning! Choking hazard. Small parts. Not suitable for children under 3 years old. |
| EU TSD warning | No warning applicable, Not for children under 36 months |
| Supplier features | |
| Assembly required | ![]() |
| EAN | 5702017153124 |
Celebrate a pop culture icon and showcase the gameplay of a true classic with this LEGO® Ideas Sonic the Hedgehog™ – Green Hill Zone model (21331). Enjoy quality time with no distractions, recreating authentic details of the Green Hill Zone, including a palm tree, bridge loop, rings, TV screens, Dr. Eggman’s Eggmobile and a spring for Super Sonic Jumps.
Iconic characters
Arrange the level in your own way and bring it to life with a Sonic the Hedgehog minifigure and Dr. Eggman, Moto Bug and Crabmeat figures. Step-by-step building instructions are included and – like in the game – you collect Chaos Emeralds as you progress. A display stand for the 7 Emeralds and Sonic minifigure completes a colourful centrepiece. All in all, it’s the best Sonic nostalgia gift for yourself or any fan.
Endless possibilities
Welcome to LEGO sets for adults: a space to relax and build detailed models that pay homage to the worlds of gaming, history, travel, sport, science, technology and entertainment.
Recreate the Green Hill Zone in LEGO® bricks – Recapture the magic of Sonic the Hedgehog™ with this LEGO Ideas model of an all-time classic platform game level (21331)
Iconic characters – A Sonic the Hedgehog™ LEGO® minifigure, plus brick-built figures of Dr. Eggman with his buildable Eggmobile, Moto Bug with 2 face options, and Crabmeat
Authentic obstacles and details – Build a palm tree, bridge loop and lever-activated spring for Super Sonic Jumps, plus 7 rings and 2 buildable TVs with 5 screen elements and 5 sticker options
Collect Chaos Emeralds, just like in the game – Earn an emerald for every build you complete and display all 7 on the stand with Sonic
Gift idea for fans – This 1,125-piece LEGO® model makes a nostalgic birthday or holiday gift for millennial Sonic the Hedgehog™ fans who enjoy unwinding with mindful activities
Display piece – The buildable Green Hill Zone measures over 7 in. (17 cm) high, 14 in. (36 cm) wide and 2.5 in. (6 cm) deep. It may be rearranged and connects easily to extra sets
Step-by-step guide – Includes a premium-quality, illustrated booklet featuring the set’s fan designer and LEGO® designers, plus illustrated instructions to ease the building experience
The LEGO® fans’ choice – This set for adults is one of many exciting LEGO Ideas sets, each created by a fan designer, voted for by thousands of LEGO fans and produced by the LEGO Group
High quality – Since 1958, LEGO® bricks have met strict industry quality standards to ensure secure connections and robust buildable models
Safety assured – LEGO® components are thoroughly tested to make sure that they comply with stringent global safety standards
Iconic characters
Arrange the level in your own way and bring it to life with a Sonic the Hedgehog minifigure and Dr. Eggman, Moto Bug and Crabmeat figures. Step-by-step building instructions are included and – like in the game – you collect Chaos Emeralds as you progress. A display stand for the 7 Emeralds and Sonic minifigure completes a colourful centrepiece. All in all, it’s the best Sonic nostalgia gift for yourself or any fan.
Endless possibilities
Welcome to LEGO sets for adults: a space to relax and build detailed models that pay homage to the worlds of gaming, history, travel, sport, science, technology and entertainment.
Recreate the Green Hill Zone in LEGO® bricks – Recapture the magic of Sonic the Hedgehog™ with this LEGO Ideas model of an all-time classic platform game level (21331)
Iconic characters – A Sonic the Hedgehog™ LEGO® minifigure, plus brick-built figures of Dr. Eggman with his buildable Eggmobile, Moto Bug with 2 face options, and Crabmeat
Authentic obstacles and details – Build a palm tree, bridge loop and lever-activated spring for Super Sonic Jumps, plus 7 rings and 2 buildable TVs with 5 screen elements and 5 sticker options
Collect Chaos Emeralds, just like in the game – Earn an emerald for every build you complete and display all 7 on the stand with Sonic
Gift idea for fans – This 1,125-piece LEGO® model makes a nostalgic birthday or holiday gift for millennial Sonic the Hedgehog™ fans who enjoy unwinding with mindful activities
Display piece – The buildable Green Hill Zone measures over 7 in. (17 cm) high, 14 in. (36 cm) wide and 2.5 in. (6 cm) deep. It may be rearranged and connects easily to extra sets
Step-by-step guide – Includes a premium-quality, illustrated booklet featuring the set’s fan designer and LEGO® designers, plus illustrated instructions to ease the building experience
The LEGO® fans’ choice – This set for adults is one of many exciting LEGO Ideas sets, each created by a fan designer, voted for by thousands of LEGO fans and produced by the LEGO Group
High quality – Since 1958, LEGO® bricks have met strict industry quality standards to ensure secure connections and robust buildable models
Safety assured – LEGO® components are thoroughly tested to make sure that they comply with stringent global safety standards
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The above technical details are for reference only and may change without notice. We reserve the right to correct printing errors and use illustrations for guidance. Some text may be auto-generated or machine-translated, which could lead to inaccuracies.


