Skip to content
Back of the Box Builds

Back of the Box Builds

LEGO Set Alternate Builds!

  • THEMES
    • Adventurers
    • Aquazone
    • Belville
    • Building Set with People
    • Castle
    • Duplo
    • Harry Potter
    • Holiday and Event
    • Model Team
    • Ninja
    • Pirates
    • Rock Raiders
    • Space
    • Star Wars
    • Studios
    • Technic
    • Time Cruisers
    • Town
    • Train
    • Western
    • Misc
  • USEFUL LINKS
    • Contribute!
    • New Instructions
    • New Official Sets
    • New Alternate Builds
    • Minifigs
    • Very Small Builds
    • Small Builds
    • Medium Builds
    • Large Builds
    • Extra Large Builds
    • About
  • THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP

Model Team Alternate Builds

Alternate Builds Large Builds Model Team Model Team Alternate Builds 

5521 – Back A

January 12, 2021January 12, 2021 Master Builder 1269 Views

From: 5521: Sea JetName: TBDSubmitted by: USERInstructions

Read more

EXPLORE MORE OFFICIAL SETS

6809: XT-5 and Droid
Classic Space Classic Space Sets Official Sets Very Small Builds 

6809: XT-5 and Droid

April 4, 2020April 4, 2020 Master Builder

Year Released: 1988Bricklink

1593: Super Model
Classic Space Classic Space Sets Large Builds Official Sets Space 

1593: Super Model

February 3, 2021February 3, 2021 Master Builder
6055: Prisoner Convoy
Castle Castle Sets Forestmen Lion Knights Official Sets Small Builds 

6055: Prisoner Convoy

May 20, 2021May 20, 2021 Master Builder
6672: Safari Off-Road Vehicle
Classic Town Off-Road Official Sets Small Builds Town Town Sets 

6672: Safari Off-Road Vehicle

January 28, 2022January 28, 2022 Master Builder
6251: Pirate Mini Figures (Sea Mates)
Official Sets Pirates Pirates I Pirates Sets Very Small Builds 

6251: Pirate Mini Figures (Sea Mates)

April 9, 2020April 9, 2020 Master Builder
6870: Space Probe Launcher
Classic Space Classic Space Sets Official Sets Small Builds Space 

6870: Space Probe Launcher

January 12, 2021January 12, 2021 Master Builder
6972: Polaris I Space Lab
Classic Space Classic Space Sets Large Builds Official Sets 

6972: Polaris I Space Lab

September 12, 2019September 28, 2019 Master Builder
6518: Baja Buggy
Classic Town Coast Guard Official Sets Small Builds Town Town Sets 

6518: Baja Buggy

May 23, 2022May 23, 2022 Master Builder
6244: Armada Sentry
Imperial Armada Official Sets Pirates Pirates Sets Small Builds 

6244: Armada Sentry

November 16, 2019April 4, 2020 Master Builder
6076: Dark Dragon’s Den
Castle Castle Sets Dragon Knights Medium Builds Official Sets 

6076: Dark Dragon’s Den

December 27, 2021December 27, 2021 Master Builder
6851: Tri-Wheeled Tyrax
Blacktron II Blacktron II Sets Official Sets Very Small Builds 

6851: Tri-Wheeled Tyrax

October 24, 2019May 14, 2020 Master Builder
1628: Santa on Sleigh with Reindeer
Holiday and Event Holiday and Event Sets Official Sets Small Builds 

1628: Santa on Sleigh with Reindeer

November 25, 2020November 25, 2020 Master Builder
6075 (375): Castle
Castle Castle Sets Classic Castle Extra Large Builds Official Sets 

6075 (375): Castle

November 8, 2019October 13, 2021 Master Builder
6630: Bucket Loader
Classic Town Construction Official Sets Town Town Sets Very Small Builds 

6630: Bucket Loader

October 13, 2021October 13, 2021 Master Builder
6878: Sub Orbital Guardian
Blacktron II Blacktron II Sets Official Sets Small Builds 

6878: Sub Orbital Guardian

October 4, 2019October 4, 2019 Master Builder
6346: Shuttle Launching Crew
Airport Classic Town Large Builds Official Sets Town Town Sets 

6346: Shuttle Launching Crew

November 20, 2020November 20, 2020 Master Builder

MINIFIGS

About This Site

Logo
In the 1960s, 70s, 80s, 90s, and early 2000s there were pictures of additional builds on the back of LEGO® boxes. There was a note that said you could build any of those exciting models with that set. There were no instructions, until now.

Themes

  • Adventurers
  • Aquazone
  • Belville
  • Building Set with People
  • Castle
  • Duplo
  • Harry Potter
  • Holiday and Event
  • Model Team
  • Ninja
  • Pirates
  • Rock Raiders
  • Space
  • Star Wars
  • Studio
  • Technic
  • Time Cruisers
  • Town
  • Train
  • Western
  • Misc

Useful Links

  • Contribute!
  • 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)
  • About

In Honor of 1526

The classic space set that never was.

Copyright © 2022 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.