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

Alternate Builds Classic Town Extra Large Alt Build Extra Large Builds Harbor Instructions Added Town Town Alternate Builds

6542 – Back A

October 5, 2023October 10, 2023 Master Builder 4873 Views

From: 6542: Launch & Load Seaport
Name: Sea Monster Processing Hub ¹
Instructions: View PDF | Download .io File

Contributions

Name, PDF and .io file submitted on October 5, 2023 by: Valdis

← 6484 – Back E
6340 – Back B →

You May Also Like

6524 – Back B

June 28, 2022June 28, 2022 Master Builder

5958 – Back A

October 28, 2019April 4, 2020 Master Builder

886 – Back C

January 25, 2024 Master Builder

6074 – Back A

October 14, 2021August 1, 2023 Master Builder

1785 – Back A

April 8, 2022May 10, 2022 Master Builder

6399 – Back B

February 24, 2023March 17, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

Chamber of Secrets Harry Potter Harry Potter Sets Medium Builds Official Sets

4733: The Dueling Club

March 3, 2023March 3, 2023 Master Builder

Year Released: 2002BricklinkInstructions

Building Classic Town Official Sets Small Builds Town Town Sets

6592: Vacation Hideaway (Weekend Cottage)

June 23, 2025June 23, 2025 Master Builder

Bjarne Tveskov Futron Sets Futuron Official Sets Small Builds

6850: Auxiliary Patroller

September 24, 2019July 29, 2023 Master Builder

Classic Town Official Sets Race Town Town Sets Very Small Builds

1750: Renault Formula 1 Racer

July 13, 2021July 13, 2021 Master Builder

Cowboys Jørn Thomsen Official Sets Small Builds Western Western Sets

6716: Weapons Wagon

April 2, 2022July 29, 2023 Master Builder

ABCs Aquazone Aquazone Sets Hydronauts Official Sets Small Builds

6150 (6159): Crystal Detector

February 23, 2023February 18, 2025 Master Builder

Airport Classic Town Large Builds Official Sets Town Town Sets

6345: Aerial Acrobats

January 29, 2021September 15, 2022 Master Builder

ABCs Castle Castle Sets Extra Large Builds Lion Knights Niels Milan Pedersen Official Sets

6080: King’s Castle

October 5, 2019August 16, 2023 Master Builder

Aquazone Aquazone Sets Box Story Hydronauts Large Builds Official Sets

6180: Hydro Search Sub

February 18, 2025February 18, 2025 Master Builder

Castle Castle Sets Dragon Knights Medium Builds Official Sets

6048: Majisto’s Magical Workshop

October 14, 2021October 14, 2021 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

886: Space Buggy

January 25, 2024January 25, 2024 Master Builder

Classic Town Official Sets Recreation Small Builds Town Town Sets

6665: River Runners

June 1, 2022June 1, 2022 Master Builder

12V Large Builds Official Sets Town Train Train Sets

7725: Electric Passenger Train

December 29, 2021July 26, 2022 Master Builder

Classic Town Construction Medium Builds Official Sets Town Town Sets

6481: Construction Crew

April 9, 2020July 4, 2022 Master Builder

Jurassic Park III Medium Builds Official Sets Studio Alternate Builds Studio Sets Studios

1371: Spinosaurus Attack Studio

January 6, 2022June 4, 2024 Master Builder

Basic Extra Large Builds Official Sets Universal Building Set

735: Basic Building Set

September 15, 2022September 15, 2022 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.