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 Classic Space Classic Space Sets Large Builds Official Sets Space

6783: Sonar Transmitting Cruiser

May 8, 2022August 15, 2023 Master Builder 5591 Views

Year Released: 1986
Bricklink
Instructions

*Alternate Build Connection: BrickJournal Issue 6 Volume 2 Page 39 – Proto 1

Back A

Back A

← 6641 – Back E
6783 – Back A →

You May Also Like

6884: Aero-Module

September 24, 2019March 17, 2024 Master Builder

6286: Skull’s Eye Schooner

February 8, 2022July 29, 2023 Master Builder

Ultimate Alien

March 22, 2025March 22, 2025 Master Builder

6880 – Back A

June 1, 2022June 2, 2022 Master Builder

6999: Cyber Saucer with Promotional Mask

December 16, 2025December 16, 2025 Master Builder

6874 – Back A

November 6, 2023November 6, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Fire Official Sets Small Builds Town Town Sets World City

7043: Firefighter

January 22, 2024January 22, 2024 Master Builder

Year Released: 2004BricklinkInstructions

ABCs Castle Castle Sets Classic Castle Daniel August Krentz Different Set Numbers Duplicate Set Number Extra Large Builds Official Sets

375-2 (6075-2): Castle

November 8, 2019September 5, 2025 Master Builder

Chamber of Secrets Harry Potter Harry Potter Sets Medium Builds Official Sets

4733: The Dueling Club

March 3, 2023March 3, 2023 Master Builder

Bonus/Value Packs Classic Town Fire Ice Planet 2002 Ice Planet 2002 Sets Official Sets Small Builds Space Town

1722: Rescue/Ice Planet Combo Pack

July 13, 2021April 4, 2024 Master Builder

Bonus/Value Pack Sets Bonus/Value Packs Official Sets Race Small Builds Town

1509: Town Value Pack

October 8, 2024October 8, 2024 Master Builder

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

7119: Twin-Pod Cloud Car

February 26, 2023February 26, 2023 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6509: Red Devil Racer

October 12, 2021October 12, 2021 Master Builder

Classic Town Construction Medium Builds Official Sets Town Town Sets

6361: Mobile Crane

April 9, 2020April 9, 2020 Master Builder

Box Story Large Builds Official Sets Pirates Pirates I Pirates Sets

6281: Pirates Perilous Pitfall

February 21, 2025February 21, 2025 Master Builder

Box Story Fabuland Fabuland Sets Official Sets Small Builds

3676: Catherine Cat’s Fun Park

March 1, 2025March 1, 2025 Master Builder

Bjarne Tveskov Extra Large Builds Official Sets Space Space Police I Space Police I Sets

6986: Mission Commander

April 3, 2022July 29, 2023 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6590: Vacation Camper

July 8, 2022July 8, 2022 Master Builder

Classic Town Official Sets Race Town Town Sets Very Small Builds

1096: Race Buggy

July 26, 2020July 26, 2020 Master Builder

ABCs Black Falcons Castle Castle Sets Large Builds Official Sets

6062: Battering Ram

October 11, 2021July 31, 2023 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Wrecker

6670: Rescue Rig

November 19, 2020November 19, 2020 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

891: Two-Man Scooter

March 15, 2024March 15, 2024 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 © 2025 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.