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

ABCs Aquazone Aquazone Sets Hydronauts Official Sets Small Builds

6150 (6159): Crystal Detector

February 23, 2023February 18, 2025 Master Builder 5502 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

889: Radar Truck

September 22, 2019September 28, 2019 Master Builder

6073 – Inside A

October 23, 2019October 28, 2021 Master Builder

780: Road Construction Set

February 14, 2024February 14, 2024 Master Builder

1526 – Back B

April 4, 2020March 14, 2025 Master Builder

6673 – Back B

April 20, 2025April 21, 2025 Master Builder

6983 – Back B

December 22, 2024February 11, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Town Off-Road Official Sets Small Builds Town Town Sets

6641: 4-Wheelin’ Truck (Four Wheelin’ Truck)

May 7, 2022May 7, 2022 Master Builder

Year Released: 1987BricklinkInstructions

Aquazone Aquazone Sets Box Plus Large Builds Official Sets Playscape/Play Stage Box Stingrays

6109: Sea Creeper {with Giant Ray}

January 19, 2022April 1, 2025 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

6883: Terrestrial Rover

October 22, 2019October 21, 2024 Master Builder

Exploriens Exploriens Sets Official Sets Space Very Small Builds

1858: Droid Scout

July 8, 2022July 8, 2022 Master Builder

Classic Town Gas Station Medium Builds Official Sets Town Town Sets Wrecker

6594: Gas Transit

November 19, 2020July 8, 2025 Master Builder

Divers Official Sets Town Town Sets Very Small Builds

6555: Sea Hunter

February 8, 2023February 8, 2023 Master Builder

Jørn Thomsen Official Sets Space Spyrius Spyrius Sets Very Small Builds

1954 (1714, Kabaya: Space 1): Surveillance Scooter

January 26, 2022February 25, 2025 Master Builder

Black Falcons Castle Castle Sets Official Sets Small Builds

6035: Castle Guard

December 27, 2021December 27, 2021 Master Builder

Building Classic Town Large Builds Official Sets Town Town Sets

6388: Holiday Home with Caravan

July 1, 2022July 1, 2022 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6509: Red Devil Racer

October 12, 2021October 12, 2021 Master Builder

Bjarne Tveskov Futron Sets Futuron Official Sets Small Builds

6875: Hovercraft

September 16, 2019October 16, 2024 Master Builder

Insectoids Insectoids Sets Official Sets Space Very Small Builds

6903: Bug Blaster

October 4, 2024October 4, 2024 Master Builder

Airport Classic Town Large Builds Official Sets Town Town Sets

6345: Aerial Acrobats

January 29, 2021September 15, 2022 Master Builder

ABCs Aquazone Aquazone Sets Hydronauts Official Sets Small Builds

6150 (6159): Crystal Detector

February 23, 2023February 18, 2025 Master Builder

Medium Builds Official Sets Pirates Pirates I Pirates Sets

6268: Renegade Runner

April 9, 2020July 13, 2021 Master Builder

Classic Town Official Sets Supplemental Town

6310: T-Road Plates

October 10, 2022May 5, 2025 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.