Skip to content

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
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 C

February 24, 2023March 17, 2024 Master Builder 3601 Views

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

← 6399 – Back B
6399 – Back D →

You May Also Like

6037 – Back C

April 18, 2023April 26, 2023 Master Builder

6430: Night Patroller

April 9, 2020February 4, 2021 Master Builder

6533 – Back B

February 3, 2022February 9, 2022 Master Builder

6664 – Back C

April 8, 2022May 10, 2022 Master Builder

6150 – Back A

February 23, 2023February 23, 2023 Master Builder

6115 – Back A

March 20, 2023March 21, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

ABCs Classic Town Extra Large Builds Harbor Official Sets Town Town Sets Wrecker

6541: Intercoastal Seaport

January 25, 2022February 12, 2025 Master Builder

Year Released: 1991BricklinkInstructions *Alternate Build Connection: M:Tron Prototypes (BrickJournal: Issue 6 Volume 2, BrickJournal: Issue 12, LEGO® Space: 1978-1992)

Cargo Classic Town Large Builds Official Sets Town Town Sets

6377: Delivery Center

May 22, 2026May 22, 2026 Master Builder

Bonus/Value Packs Imperial Guards Official Sets Pirates Pirates Alternate Builds Pirates I Small Builds

1795 – Side R

March 30, 2026March 30, 2026 Master Builder

Classic Town Medium Builds Official Sets Recreation Town Town Sets

6355: Derby Trotter

December 28, 2021December 28, 2021 Master Builder

Castle Castle Sets Dragon Knights Medium Builds Official Sets

6076: Dark Dragon’s Den

December 27, 2021December 27, 2021 Master Builder

Extra Large Builds Official Sets Star Wars Star Wars Sets

7190: Millennium Falcon

November 14, 2019November 14, 2019 Master Builder

Castle Castle Sets Extra Large Builds Niels Milan Pedersen Official Sets Royal Knights

6090: Royal Knight’s Castle

July 13, 2021July 29, 2023 Master Builder

Official Sets Small Builds Star Wars Star Wars Sets

7121: Naboo Swamp

March 2, 2023March 2, 2023 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6633: Family Car

April 19, 2021April 19, 2021 Master Builder

Futuron Official Sets Space Supplemental

6921: Monorail Accessory Track

September 1, 2023January 22, 2026 Master Builder

Aquashark Aquazone Aquazone Sets Large Builds Official Sets

6190: Shark’s Crystal Cave

July 13, 2021January 20, 2022 Master Builder

Large Builds Official Sets Race Town Town Sets

6713: Grip-n-Go Challenge

February 10, 2025February 10, 2025 Master Builder

Insectoids Insectoids Sets Official Sets Small Builds

6905: Bi-Wing Blaster

February 22, 2023February 22, 2023 Master Builder

9V Medium Builds Official Sets Town Train Train Sets

4557: Freight Loading Station

July 10, 2026July 10, 2026 Master Builder

Castle Castle Sets Dragon Knights Official Sets Small Builds

6056: Dragon Wagon

December 28, 2021June 30, 2022 Master Builder

Classic Town Medium Builds Official Sets Police Town Town Sets

6344: Jet Speed Justice

October 8, 2024October 8, 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
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.