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
- 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 4036 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

6404 – Bottom

January 6, 2025January 6, 2025 Master Builder

6643 – Back B

July 2, 2024July 2, 2024 Master Builder

1590-2 – Back B

October 22, 2021October 22, 2021 Master Builder

607 – Back C

October 19, 2019October 25, 2021 Master Builder

6977 – Back A

November 9, 2019November 9, 2019 Master Builder

6012 – Back B

September 24, 2024September 24, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

Episode III Large Builds Official Sets Star Wars Star Wars Sets

7260: Wookiee Catamaran

March 1, 2023March 1, 2023 Master Builder

Year Released: 2005BricklinkInstructions

Bonus/Value Packs Castle Castle Sets Official Sets Royal Knights Small Builds Space Spyrius Spyrius Sets

1843: Space/Castle Value Pack

January 21, 2021September 13, 2023 Master Builder

Basic Official Sets Small Builds Universal Building Set

510: Basic Building Set

July 11, 2024July 11, 2024 Master Builder

Classic Town Large Builds Official Sets Police Town Town Sets

6545: Search N’ Rescue

June 2, 2022June 2, 2022 Master Builder

Basic Happy Meal McDonalds Official Sets Polybag Universal Building Set Very Small Builds

1912: Car (Set A, 1)

April 1, 2025April 1, 2025 Master Builder

9V Large Builds Official Sets Town Train Train Sets

4555: Cargo Station

January 2, 2024January 2, 2024 Master Builder

Classic Town Gas Station Medium Builds Official Sets Town Town Sets Wrecker

6594: Gas Transit

November 19, 2020July 8, 2025 Master Builder

Basic Extra Large Builds Official Sets Universal Building Set

725: Basic Building Set

July 22, 2024July 22, 2024 Master Builder

Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets Small Builds

6260: Shipwreck Island

April 9, 2020July 29, 2023 Master Builder

Classic Town Construction Official Sets Town Town Sets Very Small Builds

6532: Diesel Dumper

November 19, 2020November 19, 2020 Master Builder

9V Extra Large Builds Official Sets Town Train Train Sets

4565: Freight and Crane Railway

January 5, 2026January 5, 2026 Master Builder

Medium Builds Official Sets Technic Technic Sets

8812: Aero Hawk II

January 22, 2026January 22, 2026 Master Builder

Black Knights Castle Castle Sets Official Sets Very Small Builds

6009: Black Knight

April 9, 2020April 9, 2020 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets

6940: Alien Moon Stalker

September 12, 2019September 12, 2024 Master Builder

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

7166: Imperial Shuttle

April 16, 2021September 4, 2023 Master Builder

ABCs Box Plus Insectoids Insectoids Sets Mask Official Sets Small Builds Space

6909: Sonic Stinger with Promotional Mask

October 4, 2024March 22, 2025 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
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.