Skip to content

Back of the Box Builds

LEGO Alternate Builds!

SETS
- Adventurers
- Aquazone
- Belville
- Building Set with People
- Castle
- Duplo
- Fabuland
- Harry Potter
- Holiday and Event
- LEGOLAND
- Model Team
- Pirates
- Space
- Star Wars
- Technic
- 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 3496 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

6596 – Back A

September 15, 2022September 15, 2022 Master Builder

4593 – Instructions A

January 27, 2025February 21, 2025 Master Builder

6250 – Back B

February 20, 2025February 20, 2025 Master Builder

6542 – Back A

October 5, 2023October 10, 2023 Master Builder

6970 – Back F

January 20, 2021October 25, 2021 Master Builder

Blacktron Concept

February 23, 2023February 11, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

ABCs Black Falcons Castle Castle Sets Large Builds Official Sets

6062: Battering Ram

October 11, 2021July 31, 2023 Master Builder

Year Released: 1987BricklinkInstructions *Alternate Build Connection: 1988 Medium US (100317/100417)

Futron Sets Futuron Medium Builds Official Sets Space

6770: Lunar Transporter Patroller

September 11, 2023September 11, 2023 Master Builder

Classic Town Construction Medium Builds Official Sets Town Town Sets

6361: Mobile Crane

April 9, 2020April 9, 2020 Master Builder

Basic Large Builds Official Sets Universal Building Set

535: Basic Building Set Tote Pack

May 15, 2023May 16, 2023 Master Builder

Medium Builds Official Sets Space Port Town Town Sets

6454: Countdown Corner

July 14, 2021July 14, 2021 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets

6940: Alien Moon Stalker

September 12, 2019September 12, 2024 Master Builder

Hospital LEGOLAND Medium Builds Official Sets

780: Road Construction Set

February 14, 2024February 14, 2024 Master Builder

Boat Fire Medium Builds Official Sets

775: Fire Fighter Ship

July 22, 2024July 22, 2024 Master Builder

Medium Builds Official Sets Space Unitron Unitron Sets

1787: Crater Cruiser

April 9, 2020July 18, 2020 Master Builder

Classic Town Medium Builds Official Sets Police Town Town Sets

6430: Night Patroller

April 9, 2020February 4, 2021 Master Builder

Classic Town Construction Official Sets Town Town Sets Very Small Builds

607: Mini Loader

October 19, 2019April 4, 2020 Master Builder

Extra Large Builds Jørn Thomsen Official Sets Western Western Sets

6769: Fort Legoredo

November 10, 2019July 29, 2023 Master Builder

Bonus/Value Pack Sets Classic Town Official Sets Small Builds Town Town Sets Traffic

1876: Soil Scooper

October 11, 2021September 7, 2023 Master Builder

Classic Town Official Sets Recreation Small Builds Town Town Sets

6595: Surf Shack

April 9, 2020April 9, 2020 Master Builder

Official Sets Pirates Pirates I Pirates Sets Very Small Builds

1747: Treasure Cave

May 6, 2022May 6, 2022 Master Builder

Classic Town Medium Builds Official Sets Town Town Sets Traffic

6357: Stunt ‘Copter N’ Truck

January 28, 2022January 28, 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
Belville
Building Set with People
Castle
Duplo
Fabuland
Harry Potter
Holiday and Event
LEGOLAND
Model Team
Pirates
Space
Star Wars
Technic
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.