Skip to content
Back of the Box Builds

Back of the Box Builds

LEGO Alternate Builds!

  • SETS
    • Adventurers
    • Aquazone
    • Belville
    • BATMAN™
    • BIONICLE
    • Building Set with People
    • Castle
    • Duplo
    • Fabuland
    • Harry Potter
    • Holiday and Event
    • LEGOLAND
    • Model Team
    • Pirates
    • Space
    • Star Wars
    • Technic
    • Train
    • 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 Extra Large Builds Town Town Alternate Builds 

6399 – Back B

February 24, 2023March 17, 2024 Master Builder 4215 Views

From: 6399: Airport Shuttle
Name: TBD
Submitted by: USER
Instructions:

  • ← 6399 – Back A
  • 6399 – Back C →

You May Also Like

6663: Wave Rebel

June 6, 2022June 6, 2022 Master Builder

6442 – Back C

December 29, 2021December 29, 2021 Master Builder

6940 – Back B

March 29, 2023September 11, 2023 Master Builder

6405 – Back B

September 15, 2022September 15, 2022 Master Builder

6685 – Back A

September 14, 2023September 18, 2023 Master Builder

4883 – Instructions H

August 2, 2021August 28, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

6877: Vector Detector
ABCs M:Tron M:Tron Sets Official Sets Small Builds Space 

6877: Vector Detector

June 7, 2021October 14, 2024 Master Builder

Year Released: 1990BricklinkInstructions *Alternate Build Connection: 6862: Secret Space Voyager

6813: Galactic Chief
Jørn Thomsen Official Sets Space Space Police II Space Police II Sets Very Small Builds 

6813: Galactic Chief

April 8, 2020July 29, 2023 Master Builder
6854: Alien Fossilizer
ABCs Exploriens Exploriens Sets Official Sets Small Builds Space 

6854: Alien Fossilizer

July 15, 2022March 22, 2025 Master Builder
535: Basic Building Set Tote Pack
Basic Large Builds Official Sets Universal Building Set 

535: Basic Building Set Tote Pack

May 15, 2023May 16, 2023 Master Builder
607: Mini Loader
Classic Town Construction Official Sets Town Town Sets Very Small Builds 

607: Mini Loader

October 19, 2019April 4, 2020 Master Builder
1549: Santa and Chimney
Holiday and Event Holiday and Event Sets Official Sets Small Builds 

1549: Santa and Chimney

February 27, 2023March 5, 2026 Master Builder
1818: Aircraft and Ground Support Equipment and Vehicle
Airport Classic Town Medium Builds Official Sets Town Town Sets 

1818: Aircraft and Ground Support Equipment and Vehicle

April 7, 2025April 7, 2025 Master Builder
6296: Shipwreck Island
Medium Builds Official Sets Pirates Pirates I Pirates Sets 

6296: Shipwreck Island

January 12, 2022January 12, 2022 Master Builder
1490: Town Bank
Classic Town Medium Builds Official Sets Town Town Sets Traffic 

1490: Town Bank

January 23, 2024January 23, 2024 Master Builder
6735: Air Chase
Island Xtreme Stunts Island Xtreme Stunts Sets Medium Builds Official Sets 

6735: Air Chase

April 7, 2026April 7, 2026 Master Builder
1966: Car Repair Shop
Classic Town Large Builds Official Sets Town Town Sets Traffic 

1966: Car Repair Shop

May 16, 2025May 16, 2025 Master Builder
6359: Horse Trailer
Classic Town Medium Builds Official Sets Recreation Town Town Sets 

6359: Horse Trailer

October 8, 2024October 8, 2024 Master Builder
6516: Moon Walker
Launch Command Official Sets Recreation Town Town Sets Very Small Builds 

6516: Moon Walker

April 9, 2020April 9, 2020 Master Builder
6385: Fire House-I
Classic Town Fire Large Builds Official Sets Town Town Sets 

6385: Fire House-I

August 7, 2022August 7, 2022 Master Builder
6086: Black Knight’s Castle
Black Knights Castle Castle Sets Extra Large Builds Niels Milan Pedersen Official Sets 

6086: Black Knight’s Castle

October 11, 2021July 29, 2023 Master Builder
7781: The Batmobile: Two-Face’s Escape
Batman I BATMAN™ BATMAN™ Sets Large Builds Official Sets 

7781: The Batmobile: Two-Face’s Escape

March 27, 2026March 27, 2026 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
  • BATMAN
  • Bionicle
  • Belville
  • Building Set with People
  • Castle
  • Duplo
  • Fabuland
  • Harry Potter
  • Holiday and Event
  • LEGOLAND
  • Model Team
  • Pirates
  • Space
  • Star Wars
  • Technic
  • Train
  • 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.