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 3430 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

6829 – Back A

April 14, 2023April 17, 2024 Master Builder

6195 – Back A

January 20, 2022January 20, 2022 Master Builder

6589 – Extra B

February 27, 2023February 27, 2023 Master Builder

6360 – Back A

October 19, 2019October 25, 2021 Master Builder

6481 – Back A

August 31, 2022September 19, 2022 Master Builder

4726 – Back A

February 27, 2023February 27, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Town Official Sets Police Town Town Sets Very Small Builds

600: Police Patrol

July 11, 2024July 11, 2024 Master Builder

Year Released: 1978BricklinkInstructions

Classic Space Classic Space Sets Large Builds Official Sets

6972: Polaris I Space Lab

September 12, 2019November 21, 2023 Master Builder

Box Marketing Blurb Castle Castle Sets Forestmen Medium Builds Official Sets

6071: Forestmen’s Crossing

October 23, 2019April 3, 2024 Master Builder

Exploriens Exploriens Sets Large Builds Official Sets

6958: Android Base

November 9, 2019April 16, 2021 Master Builder

Episode III Large Builds Official Sets Star Wars Star Wars Sets

7257: Ultimate Lightsaber Duel

March 1, 2023March 1, 2023 Master Builder

Adventurers Adventurers Sets Desert Medium Builds Official Sets

5948: Desert Expedition

October 8, 2024October 8, 2024 Master Builder

Building Classic Town Medium Builds Official Sets Town Town Sets

6349: Vacation House

July 1, 2021July 12, 2021 Master Builder

ABCs Bjarne Tveskov Blacktron II Blacktron II Sets Official Sets Small Builds

6878: Sub Orbital Guardian

October 4, 2019August 14, 2023 Master Builder

Goblet of Fire Harry Potter Harry Potter Sets Medium Builds Official Sets

4762: Rescue from the Merpeople

May 16, 2023May 16, 2023 Master Builder

Building Classic Town Large Builds Official Sets Town Town Sets

6379: Riding Stable

February 8, 2022February 8, 2022 Master Builder

Castle Castle Sets Lion Knights Official Sets Very Small Builds

6022: Horse Cart

October 19, 2019April 4, 2020 Master Builder

ABCs Box Story Ice Planet 2002 Ice Planet 2002 Sets Jørn Thomsen Large Builds Official Sets Space

6973: Deep Freeze Defender

September 26, 2019December 17, 2024 Master Builder

Box Plus Classic Space Classic Space Sets Jens Nygaard Knudsen LL Link Official Sets Playscape/Play Stage Box Small Builds Space

918: Space Transport

April 27, 2020January 6, 2026 Master Builder

Airport Classic Town Official Sets Small Builds Town Town Sets

6687: Turbo Prop I

December 27, 2021December 27, 2021 Master Builder

Belville Belville Sets Lion Knights Official Sets Recreation Very Small Builds

5830: Fun-Day Sundaes

April 19, 2021April 19, 2021 Master Builder

Airport Classic Town Extra Large Builds Official Sets Town Town Sets

6396: International Jetport

July 14, 2021July 14, 2021 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.