Set Details
- Set Number
- 31090
- Name
- Underwater Robot
- Theme
- Creator
- Year
- 2019
- Pieces
- 207
- Complexity
- Moderate
- Build Time
- 1-2 hours
- Ages
- 8+
- Type
- Play-focused
About LEGO Underwater Robot
LEGO Underwater Robot (set #31090) is a mid-sized build with 207 pieces from the Creator theme, released in 2019. The Creator line features versatile sets that can often be rebuilt into multiple models. This is a moderate-level build suitable for ages 8+, with an estimated build time of 1-2 hours.
Set Highlights
- 207 pieces at moderate complexity — a 1-2 hours build.
- Compatible with all standard LEGO sets — bricks extend naturally into other sets you own.
- Play-focused build with interactive elements designed for 8+ builders.
Who Is This Set For?
Gift for Ages 8+
The moderate difficulty makes this accessible without being trivial — a well-matched gift for LEGO fans in the 8+ age range.
Weekend Build Project
207 pieces with an estimated 1-2 hours fits comfortably into a focused afternoon or weekend session.
Expanding a Creator Collection
A solid addition for collectors building out their Creator shelf. Introduces parts and builds that complement other sets from the same line.
Build Tips
Check the piece count on the bag against the parts list before starting — knowing what you have prevents mid-build surprises.
Even in small sets, connection order matters. Follow the steps rather than building sections independently.
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 Underwater Robot (#31090) 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.
Underwater Robot FAQ
Related Reading
More Creator Sets
See all Creator →
Also Released in 2019
All 2019 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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