LEGO Sonic the Hedgehog – Green Hill Zone
Set #21331 · 2022 · 1,125 pieces · Advanced build
Set Details
- Set Number
- 21331
- Name
- Sonic the Hedgehog – Green Hill Zone
- Year
- 2022
- Pieces
- 1,125
- Complexity
- Advanced
- Build Time
- 4-8 hours
- Ages
- 14+
- Type
- Great for display
About LEGO Sonic the Hedgehog – Green Hill Zone
LEGO Sonic the Hedgehog – Green Hill Zone (set #21331) is a major set with substantial building depth with 1,125 pieces from the LEGO Ideas and CUUSOO theme, released in 2022. The LEGO Ideas and CUUSOO line features fan-designed sets voted into production by the community. Designed primarily for older teens and adults, this set is built for display with an estimated build time of 4-8 hours.
Set Highlights
- 1,125 pieces across multiple numbered bags — staged building keeps the process organized.
- Compatible with all standard LEGO sets — bricks extend naturally into other sets you own.
- Display-focused design — the finished model holds together well on a shelf without support.
Who Is This Set For?
Display & Collection
At 1,125 pieces, the finished model is built for a shelf or desk. Popular among adult fans and collectors who prefer challenging builds over play value.
Multi-Session Build Project
The estimated 4-8 hours build time makes this ideal for spreading across evenings or weekends. A satisfying project that rewards patience.
Gift for Adult LEGO Enthusiasts
One of the most-gifted categories for fans aged 14++. Works well for birthdays, holidays, or as a personal treat for LEGO Ideas and CUUSOO enthusiasts.
Build Tips
Open bags one numbered sequence at a time — LEGO orders them to match the build stages and keeps loose piece counts manageable.
Budget 4-8 hours across multiple sessions rather than one sitting. Fatigue leads to missed connections that are hard to trace later.
Once built, direct sunlight yellows ABS plastic over time. A display case or UV-filtered shelf glass keeps colors vibrant.
Finding Instructions
Building instructions for LEGO Sonic the Hedgehog – Green Hill Zone (#21331) are available as a free PDF on LEGO.com. You can also upload a photo of this set to LegoFinder to identify it and access the instructions directly.
Sonic the Hedgehog – Green Hill Zone FAQ
Related Reading
More LEGO Ideas and CUUSOO Sets
See all LEGO Ideas and CUUSOO →
Also Released in 2022
All 2022 sets →Similar Build Difficulty
Sets at roughly the same piece count and complexity tier — different theme and year, but a similar build experience.
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