Skip to content
Back of the Box Builds

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
    • Submit Instructions!
    • New Instructions
    • New Official Sets
    • New Alternate Builds
    • Minifigs
    • Very Small Builds
    • Small Builds
    • Medium Builds
    • Large Builds
    • Extra Large Builds
    • How BOTBB was Built
  • THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP
Classic Space Classic Space Sets Official Sets Small Builds 

6825: Cosmic Comet

September 12, 2019March 18, 2024 Master Builder 4599 Views

Year Released: 1985
Bricklink

Back A
Back B
Back C
  • 6940: Alien Moon Stalker →

You May Also Like

6352 – Back B

November 20, 2023November 29, 2023 Master Builder

6803: Space Patrol

September 21, 2019October 19, 2019 Master Builder

7139 – Back B

June 27, 2022February 24, 2023 Master Builder

928 – Inside A

November 24, 2020October 13, 2021 Master Builder

6633: Family Car

April 19, 2021April 19, 2021 Master Builder

6985 – Inside A

September 28, 2019August 16, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

379: Bus Station
Classic Town Medium Builds Official Sets Town Town Sets Traffic 

379: Bus Station

April 10, 2021May 31, 2023 Master Builder

Year Released: 1979BricklinkInstructions

6340: Hook & Ladder
Classic Town Fire Medium Builds Official Sets Town Town Sets 

6340: Hook & Ladder

December 29, 2021December 29, 2021 Master Builder
1630: Helicopter
Airport Classic Town Official Sets Town Town Sets Very Small Builds 

1630: Helicopter

April 8, 2025April 8, 2025 Master Builder
6659: TV Camera Crew
Classic Town Off-Road Official Sets Small Builds Town Town Sets 

6659: TV Camera Crew

April 10, 2021April 10, 2021 Master Builder
6885: Saturn Base Main Team (Crater Crawler)
Futron Sets Futuron Official Sets Small Builds Space 

6885: Saturn Base Main Team (Crater Crawler)

December 28, 2021December 28, 2021 Master Builder
6804: Surface Rover
Classic Space Classic Space Sets Official Sets Very Small Builds 

6804: Surface Rover

September 25, 2019September 28, 2019 Master Builder
857: Motorcycle
Extra Large Builds Official Sets Technic Technic Sets 

857: Motorcycle

January 6, 2025January 6, 2025 Master Builder
5986: Amazon Ancient Ruins
Adventurers Adventurers Sets Box Story Extra Large Builds Jungle Official Sets 

5986: Amazon Ancient Ruins

October 29, 2019April 3, 2024 Master Builder
6669: Diesel Daredevil
Classic Town Official Sets Race Small Builds Town Town Sets 

6669: Diesel Daredevil

March 17, 2022March 17, 2022 Master Builder
6209: Slave I (2nd edition)
Episode IV/V/VI Extra Large Builds Official Sets Star Wars Star Wars Sets 

6209: Slave I (2nd edition)

February 1, 2024February 1, 2024 Master Builder
6247: Bounty Boat
Imperial Guards Official Sets Pirates Pirates I Pirates Sets Very Small Builds 

6247: Bounty Boat

May 10, 2022May 10, 2022 Master Builder
6510: Mud Runner
Official Sets Race Town Town Sets Very Small Builds 

6510: Mud Runner

May 8, 2022May 8, 2022 Master Builder
8000: Pit Droid
Large Builds Official Sets Technic Technic Sets 

8000: Pit Droid

September 11, 2023September 11, 2023 Master Builder
132: Cottage
Box Story Fabuland Fabuland Sets Medium Builds Official Sets 

132: Cottage

March 1, 2023April 3, 2024 Master Builder
4731: Dobby’s Release
Chamber of Secrets Harry Potter Harry Potter Sets Official Sets Small Builds 

4731: Dobby’s Release

January 23, 2024January 23, 2024 Master Builder
7166: Imperial Shuttle
Episode IV/V/VI Large Builds Official Sets Star Wars Star Wars Sets 

7166: Imperial Shuttle

April 16, 2021September 4, 2023 Master Builder

BOXES

INSTRUCTIONS

FAVORITES

MINIFIGS

About This Site

Logo
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.