Skip to content

Back of the Box Builds

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
- Misc
USEFUL LINKS
THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP

Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space

920 – Back C

February 2, 2021October 25, 2021 Master Builder 4624 Views

From: 920 (483): Alpha-1 Rocket Base
Name: Alpha-1 Moving Laboratory ¹
Instructions: View PDF

Contributions

Name and PDF Instructions submitted on January 31, 2021 by: plastic.ati

← 920 – Back B
920 – Back D →

You May Also Like

924 – Back C

August 24, 2024August 27, 2024 Master Builder

6801 – Back C

September 22, 2019October 25, 2021 Master Builder

6232 – Back A

July 13, 2021July 13, 2021 Master Builder

6043: Dragon Defender

November 20, 2023November 20, 2023 Master Builder

6991 – Back B

September 28, 2019September 28, 2019 Master Builder

6059: Knight’s Stronghold

July 13, 2021July 13, 2021 Master Builder

EXPLORE MORE OFFICIAL SETS

Alpha Team Alpha Team Sets Medium Builds Mission Deep Sea Official Sets

4793: Ogel Sub Shark

February 21, 2024February 21, 2024 Master Builder

Year Released: 2002BricklinkInstructions

Classic Town Large Builds Official Sets Police Town Town Sets

6384: Police Station

December 28, 2021December 28, 2021 Master Builder

Airport Classic Town Medium Builds Official Sets Town Town Sets

2532: Aircraft and Ground Crew

December 28, 2021December 28, 2021 Master Builder

Classic Space Classic Space Sets Medium Builds Official Sets Space

6928: Uranium Search Vehicle

January 12, 2021October 21, 2024 Master Builder

Basic Set Duplo Duplo Sets Official Sets Very Small Builds

1657: Bird

December 28, 2021December 29, 2021 Master Builder

Classic Town Food and Drink Medium Builds Official Sets Town Town Sets

1620-2: Factory

October 21, 2021October 21, 2021 Master Builder

Large Builds Official Sets Star Wars Star Wars Sets

7150: TIE Fighter & Y-wing

April 21, 2026April 21, 2026 Master Builder

Imperial Soldiers Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets Very Small Builds

6245: Harbor Sentry

July 13, 2021July 29, 2023 Master Builder

12V Large Builds Official Sets Town Train Train Sets

7725: Electric Passenger Train

December 29, 2021July 26, 2022 Master Builder

ABCs Classic Town Official Sets Small Builds Town Town Sets Traffic

6655: Auto & Tire Repair

June 4, 2023July 31, 2023 Master Builder

Bonus/Value Pack Sets Castle Castle Sets Official Sets Royal Knights Small Builds

1843-3: {Royal Knights Unknown}

September 8, 2023September 13, 2023 Master Builder

Batman I BATMAN™ BATMAN™ Sets Official Sets Small Builds

7779: The Batman Dragster: Catwoman Pursuit

March 27, 2026June 23, 2026 Master Builder

Classic Town Official Sets Police Small Builds Town Town Sets

6681: Police Van

October 13, 2021October 13, 2021 Master Builder

ABCs Large Builds Official Sets Space Spyrius Spyrius Sets

6949: Robo-Guardian

October 23, 2019August 15, 2023 Master Builder

Box Story Large Builds Ninja Ninja Alternate Builds Ninja Official Sets Official Sets

6088: Robber’s Retreat

January 24, 2022April 3, 2024 Master Builder

Classic Town Fire Official Sets Small Builds Town Town Sets

6531: Flame Chaser

November 7, 2022November 7, 2022 Master Builder

BOXES

INSTRUCTIONS

FAVORITES

MINIFIGS

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.

Copyright © 2026 Back of the Box Builds. All rights reserved. LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize, or endorse this site.