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

ABCs Commercials Instructions Added Space Spyrius Unitron Unitron Alternate Builds

1994 Unitron and Spyrius Commercial

August 16, 2023August 18, 2023 Master Builder 4974 Views

Misc
Featured: 6991: Monorail Transport Base, 6939: Saucer Centurion, 6949: Robo-Guardian, 6889: Recon Robot

Build: Unitron Alarm Tower ¹
Instructions: View PDF

Contributions

Name and PDF submitted August 16, 2023 by: cosmic.brick

← 1979 Classic Space Galaxy Explorer Commercial
1993 Ice Planet 2002 and Space Police II with Maniac Commercial →

You May Also Like

Book 250 – Page 40-41

September 30, 2025October 16, 2025 Master Builder

6984 – Back C

December 22, 2025December 31, 2025 Master Builder

6823 – Back B

September 30, 2019October 25, 2021 Master Builder

926 (493): Space Command Center

October 22, 2019July 31, 2023 Master Builder

Book 250 – Page 36-37

November 8, 2021November 11, 2021 Master Builder

6939 – Back A

February 5, 2023February 13, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Space Classic Space Sets Jens Nygaard Knudsen Official Sets Small Builds

897: Mobile Missile Command

September 14, 2019July 31, 2023 Master Builder

Year Released: 1985Designer: Jens Nygaard KnudsenBricklinkInstructions

Castle Castle Sets Dark Forest Official Sets Small Builds

6024: Bandit Ambush

April 16, 2021April 16, 2021 Master Builder

Hospital LEGOLAND Medium Builds Official Sets

770: Rescue Set

September 15, 2022February 14, 2024 Master Builder

Box Plus FreeStyle FreeStyle Official Sets Official Sets Poster Small Builds

4150: FreeStyle Building Set

December 17, 2025December 17, 2025 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6807: Space Sledge with Astronaut and Robot

November 21, 2023November 21, 2023 Master Builder

Classic Town Harbor Official Sets Small Builds Town Town Sets Wrecker

6513: Glade Runner

May 10, 2022May 10, 2022 Master Builder

Box Story Daniel August Krentz Extra Large Builds Imperial Soldiers Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets

6276: Eldorado Fortress

January 28, 2022April 3, 2024 Master Builder

Classic Town Medium Builds Official Sets Town Town Sets Traffic

1490: Town Bank

January 23, 2024January 23, 2024 Master Builder

Medium Builds Official Sets Time Cruisers Time Cruisers Sets

6492: Hypno Cruiser

December 29, 2021March 20, 2025 Master Builder

Exo-Force Medium Builds Official Sets

8114: Chameleon Hunter

December 12, 2025January 6, 2026 Master Builder

Blacktron II Blacktron II Sets Large Builds Official Sets

6988: Alpha Centauri Outpost

October 24, 2019October 24, 2019 Master Builder

Medium Builds Official Sets Outback Town Town Sets

6553: Crisis News Crew

December 4, 2023December 4, 2023 Master Builder

Imperial Soldiers Official Sets Pirates Pirates I Pirates Sets Small Builds

6265: Sabre Island

May 28, 2024May 28, 2024 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds

6871: Star Patrol Launcher

September 27, 2019September 30, 2019 Master Builder

Exo-Force Medium Builds Official Sets

7704: Sonic Phantom

April 28, 2023April 28, 2023 Master Builder

Drome Racers Official Sets Racers Very Small Builds

4591: Star Strike

February 21, 2025February 21, 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
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.