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 Aquazone Aquazone Alternate Builds Hydronauts Small Builds

6150 – Back A

February 23, 2023February 23, 2023 Master Builder 3272 Views

From: 6150: Crystal Detector
Name: TBD
Submitted by: USER
Instructions

← 6150 (6159): Crystal Detector
6150 – Back B →

You May Also Like

6850: Auxiliary Patroller

September 24, 2019July 29, 2023 Master Builder

6895 – Back A

February 3, 2022February 9, 2022 Master Builder

7708: Uplink

August 11, 2023August 11, 2023 Master Builder

6352 – Back B

November 20, 2023November 29, 2023 Master Builder

6397 – Back D

June 28, 2023June 30, 2023 Master Builder

735 – Back D

December 18, 2023December 28, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

ABCs M:Tron M:Tron Sets Official Sets Small Builds Space

6877: Vector Detector

June 7, 2021October 14, 2024 Master Builder

Year Released: 1990BricklinkInstructions *Alternate Build Connection: 6862: Secret Space Voyager

Classic Town Official Sets Police Small Builds Town Town Sets

1895: Sky Patrol

June 1, 2022June 1, 2022 Master Builder

Aquazone Aquazone Sets Large Builds Official Sets Stingrays

6160: Sea Scorpion

October 29, 2019April 4, 2020 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 Small Builds

6258: Smuggler’s Shanty

July 8, 2022July 8, 2022 Master Builder

Extra Large Builds Model Team Model Team Sets Official Sets

5550: Custom Rally Van

February 9, 2026February 9, 2026 Master Builder

Box Story Large Builds Official Sets Pirates Pirates I Pirates Sets

6273: Rock Island Refuge

July 4, 2024July 4, 2024 Master Builder

Futron Sets Futuron Official Sets Small Builds Space

6885: Saturn Base Main Team (Crater Crawler)

December 28, 2021December 28, 2021 Master Builder

Large Builds Official Sets Technic Technic Sets

8001: Battle Droid

September 1, 2023September 1, 2023 Master Builder

Classic Town Construction Official Sets Town Town Sets Very Small Builds

6532: Diesel Dumper

November 19, 2020November 19, 2020 Master Builder

Medium Builds Official Sets Space Port Town Town Sets

6454: Countdown Corner

July 14, 2021July 14, 2021 Master Builder

Indians Official Sets Very Small Builds Western Western Sets

6709: Tribal Chief

October 10, 2023October 10, 2023 Master Builder

Classic Town Construction Medium Builds Official Sets Town Town Sets

6361: Mobile Crane

April 9, 2020April 9, 2020 Master Builder

9V Extra Large Builds Official Sets Town Train Train Sets

4563: Load N’ Haul Railroad

July 26, 2022July 26, 2022 Master Builder

Classic Town Large Builds Official Sets Town Town Sets Traffic

1590-2: ANWB Breakdown Assistance

October 22, 2021October 22, 2021 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds

6750: Sonic Robot

September 22, 2019September 28, 2019 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.