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 5347 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

6875 – Back B

September 16, 2019March 14, 2025 Master Builder

M:Tron Prototypes

January 23, 2024February 12, 2025 Master Builder

6926 – Back B

October 5, 2025October 11, 2025 Master Builder

Book 260 – Page 42-43

February 5, 2023February 14, 2023 Master Builder

928 – Back G

November 22, 2025November 25, 2025 Master Builder

6923 – Back B

October 1, 2019October 25, 2021 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Town Official Sets Post Office Small Builds Town Town Sets

6651: Post Office Van

February 3, 2021February 3, 2021 Master Builder

Year Released: 1982BricklinkInstructions

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6821: Shovel Buggy (Geological Inspection)

February 17, 2026February 17, 2026 Master Builder

Adventurers Adventurers Sets Dino Island Official Sets Small Builds

5975: T-Rex Transport

December 29, 2021December 29, 2021 Master Builder

Bonus/Value Pack Sets Bonus/Value Packs M:Tron M:Tron Sets Official Sets Space Very Small Builds

9401: M:Tron Team

February 18, 2026February 19, 2026 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds

6846: Tri-Star Voyager

September 26, 2019September 28, 2019 Master Builder

Building Set with People Building Set with People Sets Official Sets Small Builds

194: Family

October 4, 2019October 6, 2019 Master Builder

Classic Town Official Sets Race Town Town Sets Very Small Builds

1750: Renault Formula 1 Racer

July 13, 2021July 13, 2021 Master Builder

Episode III Medium Builds Official Sets Star Wars Star Wars Sets

7256: Jedi Starfighter & Vulture Droid

March 1, 2023May 12, 2023 Master Builder

Episode II Medium Builds Official Sets Star Wars Star Wars Sets

7143: Jedi Starfighter

December 29, 2021December 29, 2021 Master Builder

Basic Set Duplo Duplo Sets Official Sets Very Small Builds

2331: Barney The Skateboard Bear

December 29, 2021December 29, 2021 Master Builder

Classic Town Extra Large Builds Official Sets Police Town Town Sets

6598: Metro PD Station

January 6, 2022January 6, 2022 Master Builder

Imperial Soldiers Official Sets Pirates Pirates I Pirates Sets Small Builds

6259: Broadside’s Brig

April 16, 2024April 16, 2024 Master Builder

Blacktron II Blacktron II Alternate Builds Blacktron II Sets Bonus/Value Pack Sets Bonus/Value Packs Large Builds Official Sets Space Super Model

4741: Blacktron Super Vehicle Value 3-Pack

February 19, 2026February 20, 2026 Master Builder

Episode IV/V/VI Official Sets Small Builds Star Wars Star Wars Sets

7139: Ewok Attack

June 27, 2022February 24, 2023 Master Builder

Large Builds Launch Command Official Sets Town Town Sets

6544: Shuttle Transcon 2

July 20, 2022July 20, 2022 Master Builder

Medium Builds Official Sets Paradisa Town Town Sets

6416: Poolside Paradise

June 28, 2022June 28, 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 © 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.