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Big Bad Island Expansion Set — LEGO set 71412

Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗

Super Mario · SET 71412

Big Bad Island Expansion Set

An island with large and small enemies.

Pieces
354
Release year
2022
Theme
Super Mario
Set number
71412
LEGO recommended age
7+
Archived regional retail price · Germany
44.99 €
Official LEGO archive Official building instructions

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

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Official English name verified at: LEGO English archive ↗ · Checked on 26 October 2026.

TIME TO BUILD

How long does it take to build Big Bad Island Expansion Set?

First build · with help if needed

For younger children, we estimate the first illustrated setup, with adult guidance when needed. Ranges reflect building familiarity, not a child’s age or ability. Free play and learning have no completion time.

Editorial estimate · first setup

Beginner

≈ 2 h 45 minSuggested range1 h 30 min – 4 h 30 min

Intermediate

≈ 1 h 45 minSuggested range1 h – 3 h

Experienced

≈ 1 h 15 minSuggested range45 min – 2 h 15 min

First guided arrangement: one model for 3 in 1 sets, a small composition for creative boxes, and setup alone for expansions. Excludes play, breaks and electronic configuration. These are broad editorial estimates, not measured times or targets to meet.

How we estimate times · sources and method

Editorial assessment: An island with large and small enemies. A brown Goomba accompanies the other characters. Creative boxes and modular decorations refer to one first illustrated arrangement; 3 in 1 sets to the main model only, and expansions to their first setup. An adult may guide the child. Ranges reflect building familiarity, not age or development; they do not measure play, learning or a speed contest. 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.

Checked: 26 October 2026 · Method v1.0 · Limited reports; not a statistical average.

Share your building time · no account needed

Include normal piece searching and instruction checks; exclude long breaks, dismantling and modifications.

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MAKE ROOM FOR YOUR NEXT BUILD

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?

The model, the history, the ideas

Inside the set

01

A closer look

A large yellow Koopa rises above part of the scene.

LEGO source
02

Another detail

A brown Goomba accompanies the other characters.

LEGO source

Beyond the set

The stories, places and inventions behind your build.

03

A new companion and new movement

Super Mario World launched in Japan on 21 November 1990 for Super Famicom.

Read the full story

Nintendo highlights the debuts of Yoshi and Cape Mario, which expanded the ways players could travel through levels. A reference to that world points to a particular stage in the series, defined by new movement as well as new characters.

Nintendo
04

A landscape designed for exploration

Mario and Luigi travel through Dinosaur Land to rescue Peach from Bowser.

Read the full story

Yoshi helps tackle enemies, while the cape enables Mario to fly. Nintendo describes varied stages filled with mechanisms and puzzle elements. The landscape is therefore a space explored through different abilities, rather than a backdrop to the characters.

Nintendo

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.

BEYOND THE BRICKS

Keep the story going

Films, series, games, books and music connected to this model or its universe.

Film

The Super Mario Bros. Movie

2023

Another adventure in the same universe, for before or after your build.

Find streaming services · Italy ↗
Title search on JustWatch: choose the result matching the title and year above.

Streaming: Italian catalogue. Check availability, languages and terms on the external service. Searches are labelled; book results may include different editions.

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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.

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SET 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.

Editorial 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

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Sets from the same theme or with similar suggested building times. The ranges shown are for intermediate builders.