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

ABCs Concepts and Prototypes Sea People Sea-Tron Space

Aquadome

February 11, 2025February 18, 2025 Master Builder 6489 Views

Misc
Theme: Seatron, Sea People

*Alternate Build Connection: Aquazone, 6195: Neptune Discovery Lab (Aqua Dome 7), 6199: Hydro Crystalization Station

LEGO® Space: 1978-1992 – Page 157
Published: 2023
By: Tim Johnson
Dark Horse Books

Build: TBD
Submitted By: USER
Instructions

← Greytron
Sea People →

You May Also Like

6813 – Back A

April 8, 2020October 25, 2021 Master Builder

6815 – Back B

July 11, 2022July 13, 2022 Master Builder

M:Tron Prototypes

January 23, 2024February 12, 2025 Master Builder

6781 – Back C

May 18, 2022May 23, 2022 Master Builder

Islander Mask

January 26, 2025March 22, 2025 Master Builder

Galactic Spearhead

April 9, 2025April 10, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

Airport Classic Town Medium Builds Official Sets Town Town Sets

2532: Aircraft and Ground Crew

December 28, 2021December 28, 2021 Master Builder

Year Released: 1998BricklinkInstructions

Alpha Team Alpha Team Sets Mission Deep Sea Official Sets Very Small Builds

Kabaya: Alpha Team 3

September 9, 2024September 9, 2024 Master Builder

Classic Town Extra Large Builds Official Sets Town Town Sets Traffic

6393: Big-Rig Truck Stop

June 28, 2022June 28, 2022 Master Builder

Building Classic Town Medium Builds Official Sets Town Town Sets

6349: Vacation House

July 1, 2021July 12, 2021 Master Builder

Box Story Large Builds Official Sets Pirates Pirates I Pirates Sets

6273: Rock Island Refuge

July 4, 2024July 4, 2024 Master Builder

Jørn Thomsen Official Sets Space Space Police II Space Police II Sets Very Small Builds

1916 (Kabaya: Space 3): Starion Patrol

January 19, 2022February 25, 2025 Master Builder

Island Xtreme Stunts Island Xtreme Stunts Sets Medium Builds Official Sets

6739: Truck & Stunt Trikes

April 16, 2026April 16, 2026 Master Builder

9V Extra Large Builds Official Sets Town Train Train Sets

4565: Freight and Crane Railway

January 5, 2026January 5, 2026 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

1558: Mobile Command Trailer

December 18, 2021December 18, 2021 Master Builder

Official Sets Pirates Pirates I Pirates Sets Very Small Builds

1747: Treasure Cave

May 6, 2022May 6, 2022 Master Builder

Gears Medium Builds Official Sets Universal Building Set

801: Gear Set

December 17, 2025December 17, 2025 Master Builder

Classic Town Large Builds Official Sets Police Town Town Sets

381: Police Headquarters

July 27, 2023July 27, 2023 Master Builder

Basic Official Sets Small Builds Universal Building Set

510: Basic Building Set

July 11, 2024July 11, 2024 Master Builder

Official Sets Racers Radio Control Small Builds

8369: Dirt Crusher RC (Yellow)

November 13, 2024November 13, 2024 Master Builder

ABCs Jørn Thomsen Medium Builds Official Sets Spyrius Spyrius Sets

6939: Saucer Centurion

November 9, 2019October 1, 2024 Master Builder

Official Sets Small Builds Town Town Sets

1496: Rally Car

October 20, 2019October 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.