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
Airport Alternate Builds Classic Town Medium Builds Town Town Alternate Builds 

3439 – Back A

May 11, 2022May 11, 2022 Master Builder 1948 Views

From: 3439: Spy Runner
Name: TBD
Submitted by: USER
Instructions:

  • ← 3439: Spy Runner
  • 6482 – Back C →

You May Also Like

920 – Back D

February 2, 2021August 30, 2023 Master Builder

6533 – Back B

February 3, 2022February 9, 2022 Master Builder

6349 – Back C

July 1, 2021July 1, 2021 Master Builder

9355 – Card 2

March 2, 2023May 18, 2023 Master Builder

7106 – Back A

March 1, 2023March 1, 2023 Master Builder

1096 – Back C

July 26, 2020July 26, 2020 Master Builder

EXPLORE MORE OFFICIAL SETS

6396: International Jetport
Airport Classic Town Extra Large Builds Official Sets Town Town Sets 

6396: International Jetport

July 14, 2021July 14, 2021 Master Builder

Year Released: 1990BricklinkInstructions

6884: Aero-Module
Bjarne Tveskov Different Box Versions Futron Sets Futuron Official Sets Small Builds 

6884: Aero-Module

September 24, 2019March 17, 2024 Master Builder
4504: Millennium Falcon (Redesign)
Episode IV/V/VI Extra Large Builds Official Sets Star Wars Star Wars Sets 

4504: Millennium Falcon (Redesign)

May 15, 2023May 15, 2023 Master Builder
897: Mobile Missile Command
Classic Space Classic Space Sets Jens Nygaard Knudsen Official Sets Small Builds 

897: Mobile Missile Command

September 14, 2019July 31, 2023 Master Builder
1484: Weetabix Town House
Building Classic Town Medium Builds Official Sets Town Town Sets 

1484: Weetabix Town House

December 28, 2021December 28, 2021 Master Builder
3676: Catherine Cat’s Fun Park
Box Story Fabuland Fabuland Sets Official Sets Small Builds 

3676: Catherine Cat’s Fun Park

March 1, 2025March 1, 2025 Master Builder
6378: Service Station
Classic Town Extra Large Builds Gas Station Official Sets Town Town Sets Wrecker 

6378: Service Station

February 25, 2023February 26, 2023 Master Builder
6469: Spaceport Bonus Pack
Bonus/Value Pack Alternate Builds Bonus/Value Pack Sets Bonus/Value Packs Medium Builds Official Sets Space Port Town Town Sets 

6469: Spaceport Bonus Pack

March 3, 2025March 3, 2025 Master Builder
6643: Fire Truck
Classic Town Fire Official Sets Small Builds Town Town Sets 

6643: Fire Truck

July 2, 2024July 2, 2024 Master Builder
6495: Time Tunnelator
Official Sets Small Builds Time Cruisers Time Cruisers Sets 

6495: Time Tunnelator

July 14, 2021July 14, 2021 Master Builder
5958: Mummy’s Tomb
Adventurers Adventurers Sets Desert Large Builds Official Sets 

5958: Mummy’s Tomb

October 27, 2019July 14, 2022 Master Builder
6012: Siege Cart
Castle Castle Sets Lion Knights Official Sets Small Builds 

6012: Siege Cart

September 24, 2024September 24, 2024 Master Builder
6750: Sonic Robot
Classic Space Classic Space Sets Official Sets Small Builds 

6750: Sonic Robot

September 22, 2019September 28, 2019 Master Builder
8024: Universal Set
Medium Builds Official Sets Technic Technic Sets 

8024: Universal Set

October 20, 2019August 28, 2023 Master Builder
7139: Ewok Attack
Episode IV/V/VI Official Sets Small Builds Star Wars Star Wars Sets 

7139: Ewok Attack

June 27, 2022February 24, 2023 Master Builder
1621: Lunar MPV Vehicle
Bonus/Value Pack Sets Futron Sets Futuron Jørn Thomsen Official Sets Small Builds Space 

1621: Lunar MPV Vehicle

September 6, 2023September 7, 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.