Beginner
≈ 2 h 45 minSuggested range1 h 30 min – 4 h 30 min
Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗
Seasonal · SET 40570
Halloween Cat & Mouse
A cat and mouse for Halloween.
- Pieces
- 328
- Release year
- 2022
- Theme
- Seasonal
- Set number
- 40570
- LEGO recommended age
- 9+
- Archived regional retail price · Germany
- 12.99 €
Archived regional retail price in the stated market and currency. It does not establish the Italian launch price; no estimated currency conversion. Brickset ↗ · Reference checked on 22 October 2026
Official English name verified at: LEGO English archive ↗ · Checked on 26 October 2026.
TIME TO BUILD
How long does it take to build Halloween Cat & Mouse?
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
≈ 1 h 45 minSuggested range1 h – 3 hExperienced
≈ 1 h 15 minSuggested range45 min – 2 h 15 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: A cat and mouse for Halloween. The grey mouse emerges from an orange pumpkin. A first build following the instructions, including normal piece finding; an adult may help when needed. Breaks, subsequent play and any alternative models are excluded. For older sets, unnumbered bags or previously mixed pieces may prolong sorting. 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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How much display space does it need?
Assembled-model dimensions are not yet documented for this set. Box dimensions cannot tell you how much display space it needs.
BEYOND THE BRICKS
Did you know?
Inside the set
The model in the photo
The large black cat sits on the brown base.
LEGO sourceAccessories and details
The grey mouse emerges from an orange pumpkin.
LEGO sourceBeyond the set
The stories, places and inventions behind your build.
Turnips before pumpkins
Scary turnip lanterns in Ireland preceded the American pumpkin development.
Read the full story
The National Museum of Ireland links Jack o’ Lantern to folklore about Jack wandering with a lantern after being refused Heaven and Hell. This is a traditional tale, not documented biography. The frightening object combines a material, a craft activity and a seasonal story.
A museum lantern
A Donegal teacher sent an example in 1943, documenting practice around 1900.
Read the full story
Teacher Rois Ní Braonáin documented the local practice near Fintown around 1900. The object pictured by the museum is a plaster-cast model made and painted by Eileen Barnes. Distinguishing the collected lantern from its replica explains how a tradition using perishable material was preserved.
Expanded stories updated on 29 October 2026
Written 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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Building tips from the community
Specific steps, useful checks and sticking points. Contributions appear after moderation, in their original language. Do not upload instruction pages or personal contact details.
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Sign in to contributeSET THE MOOD
A soundtrack for your build
· Selected for the subject and atmosphere
Hazy electronic textures suggest imagined landscapes and memories. This suits world-building and atmosphere rather than merely matching any model containing circuitry.
OUR PICK
Music Has the Right to Children
Boards of Canada
Rhythmic and livelyEditorial 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 →
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YOUR NEXT BUILD
You might also like
Sets from the same theme or with similar suggested building times. The ranges shown are for intermediate builders.
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 ↗
Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗