LEGO Invention Designer (Kits 10 - 12)
Set #20215 · 2013 · 678 pieces · Substantial build

Set Details
- Set Number
- 20215
- Name
- Invention Designer (Kits 10 - 12)
- Year
- 2013
- Pieces
- 678
- Complexity
- Substantial
- Build Time
- 2-4 hours
- Ages
- 10+
- Type
- Play-focused
About LEGO Invention Designer (Kits 10 - 12)
LEGO Invention Designer (Kits 10 - 12) (set #20215) is a large, detailed build with 678 pieces from the Master Builder Academy theme, released in 2013. The Master Builder Academy line features building skill courses with progressive difficulty levels. At 678 pieces, this is a substantial-level build with an estimated build time of 2-4 hours, suitable for ages 10+.
Set Highlights
- 678 pieces at substantial complexity — a 2-4 hours build.
- Compatible with all standard LEGO sets — bricks extend naturally into other sets you own.
- Play-focused build with interactive elements designed for 10+ builders.
Who Is This Set For?
Gift for Ages 10+
The substantial difficulty makes this accessible without being trivial — a well-matched gift for LEGO fans in the 10+ age range.
Weekend Build Project
678 pieces with an estimated 2-4 hours fits comfortably into a focused afternoon or weekend session.
Expanding a Master Builder Academy Collection
A solid addition for collectors building out their Master Builder Academy shelf. Introduces parts and builds that complement other sets from the same line.
Build Tips
A five-minute sort by color or piece type before starting saves time hunting for specific bricks mid-step.
Follow the numbered steps in sequence — structural elements early in the build support everything that comes after.
Keep the instruction booklet after building — it's the most reliable reference for disassembly, cleaning, or reassembly after storage.
Finding Instructions
Building instructions for LEGO Invention Designer (Kits 10 - 12) (#20215) 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.
Invention Designer (Kits 10 - 12) FAQ
Related Reading
More Master Builder Academy Sets
See all Master Builder Academy →Also Released in 2013
All 2013 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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