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LEGO Alternate Builds!

SETS
- Adventurers
- Aquazone
- Belville
- BATMAN™
- BIONICLE
- Building Set with People
- Castle
- Duplo
- Fabuland
- Harry Potter
- Holiday and Event
- LEGOLAND
- Model Team
- Pirates
- Space
- Star Wars
- Technic
- Train
- Town
- Universal Building Set
- Western
- More Sets
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USEFUL LINKS
THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP

Classic Space Classic Space Sets Large Builds Official Sets

6972: Polaris I Space Lab

September 12, 2019November 21, 2023 Master Builder 8074 Views

Year Released: 1987
Bricklink
Instructions

*Alternate Build Connection: 1988 Classic Space and Blacktron with Zack Commercial

Back A

Back A

6940: Alien Moon Stalker →

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6821 – Back B

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EXPLORE MORE OFFICIAL SETS

Episode II Medium Builds Official Sets Star Wars Star Wars Sets

7143: Jedi Starfighter

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Jørn Thomsen Medium Builds Official Sets Space Space Police I Space Police I Sets

6895: Spy-Trak I

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Classic Space Classic Space Sets Official Sets Very Small Builds

6826: Crater Crawler

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Classic Town Extra Large Builds Harbor Official Sets Town Town Sets Wrecker

6543: Sail N’ Fly Marina

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Episode IV/V/VI Large Builds Official Sets Star Wars Star Wars Sets

6212: X-wing Fighter

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Castle Castle Sets Official Sets Royal Knights Very Small Builds

1752: Boat with Armor

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Harry Potter Harry Potter Sets Medium Builds Official Sets Sorcerer's Stone

4714: Gringott’s Bank

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Large Builds Model Team Model Team Sets Official Sets

5540: Formula I Racer

February 10, 2026March 4, 2026 Master Builder

Classic Town Official Sets Recreation Town Town Sets Very Small Builds

6534: Beach Bandit

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Classic Town Harbor Medium Builds Official Sets Town Town Sets Wrecker

6698: RV with Speedboat

June 28, 2022June 28, 2022 Master Builder

Medium Builds Official Sets Town Town Sets

6381: Motor Speedway

October 5, 2019February 19, 2023 Master Builder

Islanders Official Sets Pirates Pirates I Pirates Sets Small Builds

6246: Crocodile Cage

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ABCs Aquanauts Aquazone Aquazone Sets Box Plus Official Sets Playscape/Play Stage Box Small Builds

1728 (6145): Crystal Crawler {with Aqua Playscape}

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Classic Space Classic Space Sets Mads Rye Official Sets Small Builds

6882: Walking Astro Grappler

September 30, 2019April 2, 2025 Master Builder

Episode I Official Sets Star Wars Star Wars Sets Very Small Builds

7204: Jedi Defense II

June 27, 2022June 27, 2022 Master Builder

Divers Medium Builds Official Sets Town Town Sets

6558: Shark Cage Cove

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About This Site

There were once pictures of additional LEGO® builds on the back of set boxes. Written on the boxes was typically something about the endless building possibilities, "Build any of these exciting models with this set!" There were no instructions for these alternate builds, until now.

Sets

Adventurers
Aquazone
BATMAN
Bionicle
Belville
Building Set with People
Castle
Duplo
Fabuland
Harry Potter
Holiday and Event
LEGOLAND
Model Team
Pirates
Space
Star Wars
Technic
Train
Town
Universal Building Set
Western
More Sets
Misc

Useful Links

Submit Instructions!
New Instructions
New Official Sets
New Alternate Builds
Minifigs
Very Small Builds (<35 pcs)
Small Builds (<100 pcs)
Medium Builds (<200 pcs)
Large Builds (<400 pcs)
Extra Large Builds (>400 pcs)
How BOTBB was Built

In Honor of 1526

The classic space set that never was.

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