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

Space · SET 7050

Alien Defender

A little blue Alien Defence Unit vehicle faces an alien craft with two compact builds in one scene.

Pieces: 105
Release year: 2011
Theme: Space
Set number: 7050
LEGO recommended age: 7+
Archived regional retail price · US: 9.99 USD

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 Alien Defender?

Individual build

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

Beginner

≈ 1 hSuggested range36 min – 1 h 36 min

Intermediate

≈ 40 minSuggested range24 min – 1 h 4 min

Experienced

≈ 28 minSuggested range16 min – 45 min

Based 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 little blue Alien Defence Unit vehicle faces an alien craft with two compact builds in one scene. The second green-and-black craft has a very different silhouette. 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.

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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

Ground vehicle

Four wheels support the blue-and-grey bodywork.

LEGO source

Little opponent

The second green-and-black craft has a very different silhouette.

LEGO source

Beyond the set

The stories, places and inventions behind your build.

Between Mars and Jupiter

Most asteroids orbit in the main belt between Mars and Jupiter.

Read the full story

Most asteroids occupy the main belt between Mars and Jupiter, but vary greatly in shape, size and orbit; some have small moons. Their combined mass is less than Earth’s Moon, unlike the cinematic impression of an almost solid obstacle corridor.

NASA Science

Ancient remnants

They are remnants of the Solar System’s formation about 4.6 billion years ago.

Read the full story

Asteroids preserve remnants of Solar System formation around 4.6 billion years ago. Planetary gravity can move some toward Earth’s neighbourhood. Ancient origin and present motion coexist: studying one involves both early history and an orbit that can continue to change.

NASA Science

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

Electronic and synthesised sounds accompany this imagined space world. The pairing follows the model’s spacecraft, exploration and fictional mechanisms, with quieter alternatives for small steps. The subject belongs to LEGO science fiction.

OUR PICK

TRON: Legacy

Daft Punk

Rhythmic and lively

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Your listening moodChoose a different soundtrack

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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