Beginner
≈ 22 minSuggested range13 min – 36 min
Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗
Ninjago · SET 71849
Nya vs. Mutation Monster Spinner
Nya faces a Mutation Monster with a blue spinner and small accessories.
- Pieces
- 49
- Release year
- 2026
- Theme
- Ninjago
- Set number
- 71849
- LEGO recommended age
- 6+
- LEGO Italy price
- 9.99 €
Source: LEGO Italy · Price checked on 26 October 2026. Price and availability may change. Check the store for current details. This is not a verified launch price.
Official English name verified at: LEGO English catalogue ↗ · Checked on 26 October 2026.
TIME TO BUILD
How long does it take to build Nya vs. Mutation Monster Spinner?
A starting point for planning your build. Times for each experience level are editorial estimates, not measurements submitted by HowLongToBuild users.
Editorial estimate · first build
Intermediate
≈ 15 minSuggested range9 min – 24 minExperienced
≈ 10 minSuggested range6 min – 16 minBased on one person building the set for the first time, following the original instructions and using numbered bags where supplied. Includes normal piece-finding and minor adjustments; excludes long breaks, filming, dismantling and modifications. Sources may use different methods. This range is neither a statistical interval nor a limit: your build may take less or more time.
How we estimate times · sources and method
Editorial assessment: Nya faces a Mutation Monster with a blue spinner and small accessories. The estimate includes the illustrated builds, excluding repeated battles. A first build following the instructions, including normal piece finding; an adult may help when needed. Breaks and subsequent play are excluded. No verified timed build: indicative values with substantial variation.
Sources do not always specify the builder’s experience. The three experience bands are our editorial assessment, based on the complexity of the set and individual accounts where available.
- LEGO · set-specific instructions ↗
Official name, pieces, age and imagery; no timed building data.
- LEGO · set manual ↗
Document for this set number. The duration is an editorial estimate, not a LEGO timing.
Checked: 26 October 2026 · Method v1.0 · Limited reports; not a statistical average.
BUILT BY THE COMMUNITY
Yours could be the first building time.
0 reviewed solo building times.
No solo building times have been reviewed yet. You can still find editorial estimates under Suggested times.
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Create a free account →BEYOND THE BRICKS
Did you know?
Inside the set
Transparent colours
Blue elements define the spinner’s outline.
LEGO sourceInitial setup
The estimate includes the illustrated builds, excluding repeated battles.
LEGO sourceBeyond the set
The stories, places and inventions behind your build.
Claws could indicate rank
On a Qing robe examined by the Met, five-clawed dragons indicate membership of the imperial family. The number and placement of details carried specific meanings.
The Metropolitan Museum of ArtA hidden ninth dragon
The robe features nine dragons, one inside, hidden when worn. Even a ceremonial object can hold a detail intended to be discovered at close quarters.
The Metropolitan Museum of ArtWritten by HowLongToBuild · Sources are linked with each story · Checked on 26 October 2026. Historical facts and story details refer to the context described.
THE COMMUNITY’S EXPERIENCE
What was it like to build?
Three separate scores from 1 to 10. For difficulty, 1 means very easy and 10 means very difficult.
No approved ratings yet. Scores are never generated by this site or inferred from the recommended age.
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Specific steps, useful checks and sticking points. Contributions appear after moderation, in their original language. Do not upload instruction pages or personal contact details.
No approved tips yet.
Sign in to contributeSET THE MOOD
A soundtrack for your build
Nya vs. Mutation Monster Spinner · Selected for the subject and atmosphere
Piano miniatures, contrasts and musical colours lend an imaginative character to figures and fantasy worlds. A suggestion for finding a sense of wonder as you build.
OUR PICK
Debussy – Rameau
Víkingur Ólafsson
Piano · colour and small contrastsTry a different atmosphere
ANOTHER MOOD
Green
Hiroshi Yoshimura
Ambient · light and contemplativeEditorial suggestions, not official soundtracks for the set. External services may require an account or subscription; editions and availability can vary by country. Suggest another soundtrack →
Report a problem with this set →
YOUR NEXT BUILD
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Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗
Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗
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Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗
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