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 Aquazone Aquazone Sets Hydronauts Official Sets Small Builds

6150 (6159): Crystal Detector

February 23, 2023February 18, 2025 Master Builder 6316 Views

Year Released: 1998
Bricklink
Instructions

*Alternate Build Connection: Aqua Rover (LEGO Mania Magazine: May-June 1998)

Back A

Back A

← 6905 – Back D
6150 – Back A →

You May Also Like

6842: Shuttle Craft

October 21, 2019October 21, 2019 Master Builder

1549: Santa and Chimney

February 27, 2023March 5, 2026 Master Builder

6651 – Back C

February 3, 2021February 3, 2021 Master Builder

6067: Guarded Inn

February 9, 2021July 29, 2023 Master Builder

6088: Robber’s Retreat

January 24, 2022April 3, 2024 Master Builder

6049 – Back A

June 30, 2022June 30, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Holiday and Event Holiday and Event Sets Official Sets Small Builds

1978: Build-A-Santa Polybag

April 28, 2023April 28, 2023 Master Builder

Year Released: 1991BricklinkInstructions

Classic Space Classic Space Sets Official Sets Space Very Small Builds

886: Space Buggy

January 25, 2024March 2, 2026 Master Builder

Bjarne Tveskov Medium Builds Official Sets Space Space Police I Space Police I Sets

6886: Galactic Peace Keeper

April 8, 2020July 29, 2023 Master Builder

Official Sets Pirates Pirates I Pirates Sets Very Small Builds

6235: Buried Treasure

May 23, 2022May 23, 2022 Master Builder

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

Black Knights Castle Castle Sets Medium Builds Official Sets

6059: Knight’s Stronghold

July 13, 2021July 13, 2021 Master Builder

Castle Castle Sets Lion Knights Official Sets Small Builds

6012: Siege Cart

September 24, 2024September 24, 2024 Master Builder

Official Sets Small Builds Space Port Town Town Sets

6465: Space Port Jet

March 3, 2025March 3, 2025 Master Builder

Classic Town Official Sets Police Town Town Sets Very Small Builds

6623: Police Car

October 13, 2021October 13, 2021 Master Builder

Medium Builds Official Sets Town Town Sets

6561: Hot Rod Club

November 10, 2019June 3, 2026 Master Builder

Classic Town Official Sets Race Town Town Sets Very Small Builds

1096: Race Buggy

July 26, 2020July 26, 2020 Master Builder

Airport Classic Town Medium Builds Official Sets Town Town Sets

3439: Spy Runner

May 11, 2022May 11, 2022 Master Builder

Classic Space Classic Space Sets Extra Large Builds Official Sets Space

6980: Galaxy Commander

July 21, 2021July 21, 2021 Master Builder

Box Plus Different Box Versions Exploriens Exploriens Sets Medium Builds Official Sets

1737: Scorpion Detector (Limited Edition)

March 5, 2026March 5, 2026 Master Builder

Castle Castle Sets Duplicate Set Number Large Builds Official Sets Wolfpack

6075-1: Wolfpack Tower

October 11, 2021March 11, 2024 Master Builder

ABCs CHIMA™ CHIMA™ Sets Extra Large Builds Official Sets

70008: Gorzan’s Gorilla Striker

March 26, 2026March 26, 2026 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.