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

Classic · SET 10405

Mission to Mars

A creative box with rockets, robots and space ideas.

Pieces: 871
Release year: 2018
Theme: Classic
Set number: 10405
LEGO recommended age: 5+
Archived regional retail price · Germany: 49.99 €

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 Mission to Mars?

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

≈ 45 minSuggested range27 min – 1 h 12 min

Intermediate

≈ 30 minSuggested range18 min – 48 min

Experienced

≈ 21 minSuggested range12 min – 34 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: A creative box with rockets, robots and space ideas. The estimate covers one first illustrated idea rather than every model or possible invention. 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.

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.

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Build your own story.

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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

Astronaut minifigure

The helmeted character accompanies examples of vehicles and creatures.

LEGO source

First exploration

The estimate covers one first illustrated idea rather than every model or possible invention.

LEGO source

Beyond the set

The stories, places and inventions behind your build.

The first flight on another planet

Ingenuity made the first powered, controlled flight on Mars on 19 April 2021.

Read the full story

Ingenuity made the first powered, controlled flight on another planet on 19 April 2021. Carried beneath Perseverance as a technology demonstration, it tested an aerial perspective distinct from the rover’s surface science mission.

NASA

A challenging atmosphere

Surface pressure on Mars is about one per cent of Earth’s. Rotors must work with very few air molecules.

Read the full story

Mars’s surface pressure is about one percent of Earth’s, leaving little air for rotor interaction. Ingenuity also needed autonomous flight because distance prevented real-time joystick control from Earth. Aerodynamics and guidance were linked challenges, beyond simply building a lighter version of an ordinary helicopter.

NASA

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.

No approved tips yet.

SET THE MOOD

A soundtrack for your build

· Selected for the subject and atmosphere

Plantasia’s synthesiser melodies suggest landscapes to explore and small worlds to imagine. They accompany the curious side of a space build, with piano among the alternatives for a more restrained backdrop.

OUR PICK

Mother Earth's Plantasia

Mort Garson

Intimate and spacious

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