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

Concepts and Prototypes Space

Blacktron II Prototypes

February 23, 2023February 11, 2025 Master Builder 4628 Views

Misc
Theme: Blacktron II

BrickJournal Issue 6 Volume 2 – Page 42
TwoMorrows Publishing
Photo Credit: Niels Milan Pedersen’s personal LEGO archives

Build 1: TBD
Submitted By: USER
Instructions:

Build 2: TBD
Submitted By: USER
Instructions:

Build 3: TBD
Submitted By: USER
Instructions:

← BrickJournal Issue 6 Volume 2 Page 42 – Concept 1
BrickJournal Issue 6 Volume 2 Page 43 – Concept 1 →

You May Also Like

Book 250 – Page 36-37

November 8, 2021November 11, 2021 Master Builder

6950 – Inside A

June 25, 2022May 17, 2023 Master Builder

2151 – Back C

January 14, 2021January 14, 2021 Master Builder

6901 – Back A

August 25, 2023March 14, 2025 Master Builder

1499 – Back B

February 3, 2021May 17, 2023 Master Builder

894: Mobile Ground Tracking Station

January 12, 2021July 29, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Space Classic Space Sets Official Sets Small Builds Space

6822: Space Digger

March 12, 2024March 12, 2024 Master Builder

Year Released: 1981BricklinkInstructions

Cowboys Official Sets Very Small Builds Western Western Sets

6790: Bandit’s Wheelgun

October 10, 2023October 10, 2023 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6820: Starfire I

January 12, 2021January 12, 2021 Master Builder

Castle Castle Sets Dragon Knights Official Sets Small Builds

6056: Dragon Wagon

December 28, 2021June 30, 2022 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

6870: Space Probe Launcher

January 12, 2021January 12, 2021 Master Builder

Classic Town Extra Large Builds Harbor Official Sets Town Town Sets Wrecker

6543: Sail N’ Fly Marina

July 22, 2022July 22, 2022 Master Builder

ABCs Aquanauts Aquazone Aquazone Sets Extra Large Builds Jørn Thomsen Official Sets

6195: Neptune Discovery Lab (Aqua Dome 7)

January 20, 2022February 11, 2025 Master Builder

Classic Town Fire Medium Builds Official Sets Town Town Sets

6358: Snorkel Squad

April 15, 2021April 15, 2021 Master Builder

Islanders Official Sets Pirates Pirates I Pirates Sets Small Builds

6236: King Kahuka

December 28, 2021December 28, 2021 Master Builder

Basic Large Builds Official Sets Universal Building Set

710: Universal Building Set

February 22, 2024February 22, 2024 Master Builder

Medium Builds Official Sets Paradisa Town Town Sets

6414: Dolphin Point

January 14, 2021January 14, 2021 Master Builder

Chamber of Secrets Harry Potter Harry Potter Sets Medium Builds Official Sets

4719: Quality Quidditch Supplies

March 22, 2025March 22, 2025 Master Builder

Episode III Medium Builds Official Sets Star Wars Star Wars Sets

6205: V-wing Fighter

March 3, 2023March 3, 2023 Master Builder

Drome Racers Official Sets Racers Very Small Builds

4592: Red Monster

November 14, 2025November 14, 2025 Master Builder

Airport Classic Town Large Builds Official Sets Town Town Sets

6346: Shuttle Launching Crew

November 20, 2020November 20, 2020 Master Builder

Building Classic Town Large Builds Official Sets Town Town Sets

6388: Holiday Home with Caravan

July 1, 2022July 1, 2022 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 © 2025 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.