Skip to content
Back of the Box Builds

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
    • Train
    • Town
    • Universal Building Set
    • Western
    • More Sets
    • Misc
  • USEFUL LINKS
    • Submit Instructions!
    • New Instructions
    • New Official Sets
    • New Alternate Builds
    • Minifigs
    • Very Small Builds
    • Small Builds
    • Medium Builds
    • Large Builds
    • Extra Large Builds
    • How BOTBB was Built
  • THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP
ABCs Blacktron Blacktron Alternate Builds Blacktron II Blacktron II Alternate Builds Concepts and Prototypes Space 

Blacktron Concept

February 23, 2023February 11, 2025 Master Builder 7225 Views

Misc
Theme: Blacktron

BrickJournal: Issue 6 Volume 2 – Page 39
TwoMorrows Publishing
Photo Credit: Niels Milan Pedersen’s personal LEGO archives

Build 1: TBD
Submitted By: USER
Instructions:
*Alternate Build Connection: 2154: Robo Master

Build 2: TBD
Submitted By: USER
Instructions:
*Alternate Build Connection: 2152: Robo Raptor

Build 3: TBD
Submitted By: USER
Instructions:

Build 4: TBD
Submitted By: USER
Instructions:

Build 5: TBD
Submitted By: USER
Instructions:

Build 6: TBD
Submitted By: USER
Instructions:

  • ← BrickJournal Issue 6 Volume 2
  • Space Police II Concept →

You May Also Like

6854 – Back A

August 31, 2022September 19, 2022 Master Builder

MAGS

March 14, 2025April 10, 2025 Master Builder

1620: Astro Dart

September 6, 2023September 7, 2023 Master Builder

1954 – Back A

January 26, 2022January 26, 2022 Master Builder

6808: Galaxy Trekkor

January 21, 2021January 21, 2021 Master Builder

1967: System Bonus Pack

February 13, 2025February 13, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

6532: Diesel Dumper
Classic Town Construction Official Sets Town Town Sets Very Small Builds 

6532: Diesel Dumper

November 19, 2020November 19, 2020 Master Builder

Year Released: 1991BricklinkInstructions

6776: Ogel Control Center
Alpha Team Alpha Team Sets Large Builds Official Sets 

6776: Ogel Control Center

February 12, 2024February 12, 2024 Master Builder
6395: Victory Lap Raceway
Extra Large Builds Official Sets Race Town Town Sets 

6395: Victory Lap Raceway

July 1, 2022July 1, 2022 Master Builder
1818: Aircraft and Ground Support Equipment and Vehicle
Airport Classic Town Medium Builds Official Sets Town Town Sets 

1818: Aircraft and Ground Support Equipment and Vehicle

April 7, 2025April 7, 2025 Master Builder
735: Basic Building Set
Basic Extra Large Builds Official Sets Universal Building Set 

735: Basic Building Set

September 15, 2022September 15, 2022 Master Builder
1974-4: Star Quest
Bonus/Value Pack Sets Futron Sets Futuron Official Sets Small Builds Space 

1974-4: Star Quest

September 7, 2023September 8, 2023 Master Builder
6249: Pirates Ambush
Medium Builds Official Sets Pirates Pirates I Pirates Sets 

6249: Pirates Ambush

November 16, 2019February 20, 2025 Master Builder
5580: Highway Rig
Extra Large Builds Model Team Model Team Sets Official Sets 

5580: Highway Rig

February 9, 2026February 9, 2026 Master Builder
775: Fire Fighter Ship
Boat Fire Medium Builds Official Sets 

775: Fire Fighter Ship

July 22, 2024July 22, 2024 Master Builder
6809: XT-5 and Droid
Classic Space Classic Space Sets Official Sets Very Small Builds 

6809: XT-5 and Droid

April 4, 2020April 4, 2020 Master Builder
6830: Space Patroller
Bjarne Tveskov Futron Sets Futuron Official Sets Space Very Small Builds 

6830: Space Patroller

April 8, 2020July 29, 2023 Master Builder
6404: Carriage Ride
Medium Builds Official Sets Paradisa Town Town Sets 

6404: Carriage Ride

January 6, 2025January 6, 2025 Master Builder
6802: Space Probe
Classic Space Classic Space Sets Official Sets Space Very Small Builds 

6802: Space Probe

October 10, 2022October 10, 2022 Master Builder
6313: Cross-Road Plates
Classic Town Official Sets Supplemental Town 

6313: Cross-Road Plates

October 10, 2022October 10, 2022 Master Builder
6783: Sonar Transmitting Cruiser
ABCs Classic Space Classic Space Sets Large Builds Official Sets Space 

6783: Sonar Transmitting Cruiser

May 8, 2022August 15, 2023 Master Builder
6822: Space Digger
Classic Space Classic Space Sets Official Sets Small Builds Space 

6822: Space Digger

March 12, 2024March 12, 2024 Master Builder

BOXES

INSTRUCTIONS

FAVORITES

MINIFIGS

About This Site

Logo
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
  • Train
  • 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.