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 4918 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

6513 – Back A

May 18, 2022May 23, 2022 Master Builder

6841 – Back A

October 3, 2019October 25, 2021 Master Builder

6836: V-Wing Fighter

October 24, 2019March 22, 2025 Master Builder

6648 – Back D

May 18, 2022May 23, 2022 Master Builder

1694: Galactic Scout

February 9, 2021February 9, 2021 Master Builder

6955 – Back A

February 3, 2021August 1, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Official Sets Small Builds Star Wars Star Wars Sets

7115: Gungan Patrol

January 12, 2021January 12, 2021 Master Builder

Year Released: 2000BricklinkInstructions

Bonus/Value Pack Alternate Builds Castle Castle Alternate Builds Instructions Added Official Sets Royal Knights Small Alt Build Small Builds Space Spyrius Spyrius Alternate Builds

1843 – Side R

January 22, 2021March 14, 2025 Master Builder

Classic Space Classic Space Sets Medium Builds Official Sets

6890: Cosmic Cruiser

October 7, 2019October 7, 2019 Master Builder

Medium Builds Official Sets Studio Sets Studios

1381: Vampire’s Crypt

July 2, 2024July 2, 2024 Master Builder

Large Builds Official Sets Time Cruisers Time Cruisers Sets

6493: Flying Time Vessel

July 14, 2021December 29, 2021 Master Builder

Hospital LEGOLAND Medium Builds Official Sets

780: Road Construction Set

February 14, 2024February 14, 2024 Master Builder

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

6257: Castaway’s Raft

June 6, 2022July 29, 2023 Master Builder

ABCs Large Builds Launch Command Official Sets Town Town Sets

6614: Launch Evac 1

June 30, 2023February 22, 2025 Master Builder

ABCs Classic Space Classic Space Sets Large Builds Official Sets Space

6783: Sonar Transmitting Cruiser

May 8, 2022August 15, 2023 Master Builder

Classic Space Classic Space Sets Official Sets Space Supplemental

454: Two Lunar Landing Plates

July 11, 2024July 11, 2024 Master Builder

ABCs Aquazone Aquazone Sets Hydronauts Official Sets Small Builds

6150 (6159): Crystal Detector

February 23, 2023February 18, 2025 Master Builder

Duplo Duplo Sets Official Sets Playhouse Small Builds

2788: Katie’s Kitchen

July 10, 2024July 10, 2024 Master Builder

Futron Sets Futuron Medium Builds Official Sets

6893: Orion II Hyperspace

September 25, 2019September 28, 2019 Master Builder

Extra Large Builds Model Team Model Team Sets Official Sets

5581: Magic Flash

January 2, 2024January 2, 2024 Master Builder

Classic Town Official Sets Police Small Builds Town Town Sets

6533: Police 4×4

January 6, 2022January 6, 2022 Master Builder

Medium Builds Official Sets Paradisa Town Town Sets

6405: Sunset Stables

September 15, 2022September 15, 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.