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
Concepts and Prototypes Space 

Alien Prototype

February 23, 2023February 12, 2025 Master Builder 7275 Views

Misc
Theme: Space

BrickJournal: Issue 6 Volume 2 – Page 41
TwoMorrows Publishing
Photo Credit: Niels Milan Pedersen’s personal LEGO archives

Build: TBD
Submitted By: USER
Instructions

  • ← Space Police II Concept
  • BrickJournal Issue 6 Volume 2 Page 42 – Concept 1 →

You May Also Like

1974-4 – Back B

January 9, 2026January 12, 2026 Master Builder

6807 – Back B

November 21, 2023November 21, 2023 Master Builder

Aqua Rover

January 18, 2025December 31, 2025 Master Builder

1988 Classic Space and Blacktron with Zack Commercial

August 16, 2023August 16, 2023 Master Builder

6800 – Back C

October 4, 2024October 4, 2024 Master Builder

6970 – Back H

June 8, 2022June 29, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

6430: Night Patroller
Classic Town Medium Builds Official Sets Police Town Town Sets 

6430: Night Patroller

April 9, 2020February 4, 2021 Master Builder

Year Released: 1991BricklinkInstructions

7475: Fire Hammer vs. Mutant Lizards
Dino Attack Large Builds Official Sets 

7475: Fire Hammer vs. Mutant Lizards

April 27, 2023April 27, 2023 Master Builder
6589: Radical Racer {with Rocky Ridge Playscape}
Box Plus Extreme Team Official Sets Playscape/Play Stage Box Small Builds Town Town Sets 

6589: Radical Racer {with Rocky Ridge Playscape}

February 27, 2023October 8, 2024 Master Builder
6497: Twisted Time Train
Box Story Medium Builds Official Sets Time Cruisers Time Cruisers Sets 

6497: Twisted Time Train

March 17, 2025March 17, 2025 Master Builder
Kabaya: Alpha Team 2
Alpha Team Alpha Team Sets Mission Deep Sea Official Sets Very Small Builds 

Kabaya: Alpha Team 2

September 9, 2024September 9, 2024 Master Builder
1549: Santa and Chimney
Holiday and Event Holiday and Event Sets Official Sets Small Builds 

1549: Santa and Chimney

February 27, 2023March 5, 2026 Master Builder
6469: Spaceport Bonus Pack
Bonus/Value Pack Alternate Builds Bonus/Value Pack Sets Bonus/Value Packs Medium Builds Official Sets Space Port Town Town Sets 

6469: Spaceport Bonus Pack

March 3, 2025March 3, 2025 Master Builder
6981: Aerial Intruder
ABCs Blacktron II Blacktron II Sets Jørn Thomsen Large Builds Official Sets Space 

6981: Aerial Intruder

September 22, 2019August 15, 2023 Master Builder
6872: Xenon X-Craft
Classic Space Classic Space Sets Official Sets Small Builds 

6872: Xenon X-Craft

October 19, 2019April 21, 2026 Master Builder
6351: Surf N’ Sail Camper
Classic Town Medium Builds Official Sets Recreation Town Town Sets 

6351: Surf N’ Sail Camper

July 14, 2021July 14, 2021 Master Builder
6212: X-wing Fighter
Episode IV/V/VI Large Builds Official Sets Star Wars Star Wars Sets 

6212: X-wing Fighter

February 1, 2024February 1, 2024 Master Builder
2161: Aqua Dozer
Aquaraiders I Aquazone Aquazone Sets Large Builds Official Sets 

2161: Aqua Dozer

January 8, 2020April 4, 2020 Master Builder
4726: Quidditch Practice
Chamber of Secrets Harry Potter Harry Potter Sets Medium Builds Official Sets 

4726: Quidditch Practice

February 27, 2023February 27, 2023 Master Builder
6289: Red Beard Runner
Extra Large Builds Official Sets Pirates Pirates I Pirates Sets 

6289: Red Beard Runner

July 13, 2021July 13, 2021 Master Builder
8860: Car Chassis (Auto Chassis)
Extra Large Builds Official Sets Technic Technic Sets 

8860: Car Chassis (Auto Chassis)

January 2, 2024January 2, 2024 Master Builder
6236: King Kahuka
Islanders Official Sets Pirates Pirates I Pirates Sets Small Builds 

6236: King Kahuka

December 28, 2021December 28, 2021 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.