Skip to content

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
THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP

Airport Alternate Builds LEGOLAND LEGOLAND Alternate Builds Small Builds

371-3 – Bottom A

October 8, 2024October 8, 2024 Master Builder 3225 Views

From: 371: Seaplane
Name: TBD
Submitted by: USER
Instructions

← 371-3 – Top B
4818: Dragon Rider →

You May Also Like

6012 – Back A

September 24, 2024September 24, 2024 Master Builder

6939 – Back A

February 5, 2023February 13, 2023 Master Builder

1657 – Back B

December 28, 2021December 28, 2021 Master Builder

6536 – Back B

January 22, 2026January 22, 2026 Master Builder

6246: Crocodile Cage

January 26, 2022January 26, 2022 Master Builder

6706 – Back B

October 10, 2023October 10, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Basic Official Sets Small Builds Universal Building Set

385-2: Build-N-Store Chest

September 8, 2025September 8, 2025 Master Builder

Year Released: 1990Bricklink

Insectoids Insectoids Sets Official Sets Space Very Small Builds

6903: Bug Blaster

October 4, 2024October 4, 2024 Master Builder

ABCs Insectoids Insectoids Sets Official Sets Small Builds

6837: Cosmic Creeper (Mantis Scavenger)

April 2, 2020March 22, 2025 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets

6951: Robot Command Center

September 21, 2019September 28, 2019 Master Builder

Imperial Guards Official Sets Pirates Pirates I Pirates Sets Very Small Builds

6247: Bounty Boat

May 10, 2022May 10, 2022 Master Builder

9V Extra Large Builds Official Sets Town Train Train Sets

4565: Freight and Crane Railway

January 5, 2026January 5, 2026 Master Builder

Episode III Official Sets Small Builds Star Wars Star Wars Sets

7255: General Grievous Chase

March 2, 2023March 2, 2023 Master Builder

Bonus/Value Pack Sets Bonus/Value Packs Official Sets Race Small Builds Town

1509: Town Value Pack

October 8, 2024October 8, 2024 Master Builder

Classic Town Extra Large Builds Gas Station Official Sets Town Town Sets Wrecker

6378: Service Station

February 25, 2023February 26, 2023 Master Builder

Episode III Large Builds Official Sets Star Wars Star Wars Sets

7260: Wookiee Catamaran

March 1, 2023March 1, 2023 Master Builder

Official Sets Small Builds Star Wars Star Wars Sets

7124: Flash Speeder

November 15, 2019November 15, 2019 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6802: Space Probe

October 10, 2022October 10, 2022 Master Builder

Episode IV/V/VI Medium Builds Official Sets Star Wars Star Wars Sets

4501: Mos Eisley Cantina

December 29, 2021December 29, 2021 Master Builder

Indians Official Sets Very Small Builds Western Western Sets

6709: Tribal Chief

October 10, 2023October 10, 2023 Master Builder

Designer Sets Designer Sets Alternate Builds Designer Sets Set Medium Builds Official Sets

4883: Gear Grinders

August 2, 2021August 2, 2021 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds

6825: Cosmic Comet

September 12, 2019March 18, 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
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 © 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.