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
- 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 5939 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

6882: Walking Astro Grappler

September 30, 2019April 2, 2025 Master Builder

6872: Xenon X-Craft

October 19, 2019April 21, 2026 Master Builder

Kabaya: Alpha Team 1

September 9, 2024September 9, 2024 Master Builder

1628 – Back A

November 25, 2020July 25, 2024 Master Builder

6989: Mega Core Magnetizer (Multi Core Magentizer)

September 15, 2019February 18, 2026 Master Builder

6646 – Back A

March 16, 2022March 16, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Space Classic Space Sets Jens Nygaard Knudsen Official Sets Small Builds Space

894: Mobile Ground Tracking Station

January 12, 2021July 29, 2023 Master Builder

Year Released: 1979Designer: Jens Nygaard KnudsenBricklinkInstructions

Box Story Fabuland Fabuland Sets Medium Builds Official Sets

132: Cottage

March 1, 2023April 3, 2024 Master Builder

Classic Town Food and Drink Medium Builds Official Sets Town Town Sets

1620-2: Factory

October 21, 2021October 21, 2021 Master Builder

Classic Space Classic Space Sets Official Sets Very Small Builds

6803: Space Patrol

September 21, 2019February 15, 2026 Master Builder

Boat Fire Medium Builds Official Sets

775: Fire Fighter Ship

July 22, 2024July 22, 2024 Master Builder

Exploriens Exploriens Sets Official Sets Space Very Small Builds

1858: Droid Scout

July 8, 2022July 8, 2022 Master Builder

Classic Town Construction Medium Builds Official Sets Town Town Sets

6581: Dig N’ Dump

November 7, 2022November 7, 2022 Master Builder

Box Story Duplicate Set Number Medium Builds Ninja Ninja Alternate Builds Ninja Official Sets Official Sets

6083-2: Samurai Stronghold

December 16, 2025December 16, 2025 Master Builder

Classic Space Classic Space Sets Official Sets Very Small Builds

6809: XT-5 and Droid

April 4, 2020April 4, 2020 Master Builder

ABCs Bjarne Tveskov Extra Large Builds Futron Sets Futuron Official Sets Space

6990: Futuron Monorail Transport System

August 30, 2020February 12, 2025 Master Builder

Medium Builds Official Sets Super Model Technic Technic Alternate Builds Technic Sets

120270: The Great Technic Racer

March 8, 2025March 8, 2025 Master Builder

Fire Official Sets Small Builds Town Town Sets World City

7043: Firefighter

January 22, 2024January 22, 2024 Master Builder

Official Sets Racers Radio Control Small Builds

8369: Dirt Crusher RC (Yellow)

November 13, 2024November 13, 2024 Master Builder

Classic Space Classic Space Sets Duplicate Set Number Official Sets Small Builds Space

6848: Interplanetary Shuttle

March 11, 2024March 11, 2024 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6802: Space Probe

October 10, 2022October 10, 2022 Master Builder

Life on Mars Life on Mars Sets Medium Builds Official Sets Space

7314: Recon-Mech RP

July 14, 2021July 14, 2021 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
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.