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
    • 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
Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space 

1968 – Back D

November 21, 2023December 2, 2023 Master Builder 3908 Views

From: 1968: {Unknown}
Name: Unknown Comet 1
Instructions: View PDF | Download .io File

Back D

Contributions

  1. Name, PDF and .io file submitted on November 21, 2023 by: tutmosic
  • ← 1968 – Back A
  • 6883 – Back D →

You May Also Like

6642 – Back A

April 8, 2020April 8, 2020 Master Builder

801 – Instructions

December 17, 2025December 17, 2025 Master Builder

6630 – Back D

October 13, 2021October 13, 2021 Master Builder

6030 – Back A

April 2, 2022April 2, 2022 Master Builder

2152: Robo Raptor

January 14, 2021March 22, 2025 Master Builder

6850 – Back A

September 24, 2019March 14, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

6999: Cyber Saucer with Promotional Mask
Box Plus Mask Medium Builds Official Sets UFO UFO Sets 

6999: Cyber Saucer with Promotional Mask

December 16, 2025December 16, 2025 Master Builder

Year Released: 1997Bricklink

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
6077: Knight’s Procession
Castle Castle Sets Classic Castle Official Sets Very Small Builds 

6077: Knight’s Procession

July 13, 2021July 13, 2021 Master Builder
6081: King’s Mountain Fortress
Castle Castle Sets Crusaders Daniel August Krentz Extra Large Builds Official Sets 

6081: King’s Mountain Fortress

June 30, 2022July 29, 2023 Master Builder
6536: Aero Hawk
Airport Classic Town Official Sets Small Builds Town Town Sets 

6536: Aero Hawk

January 22, 2026January 22, 2026 Master Builder
6155: Deep Sea Predator
Aquashark Aquazone Aquazone Sets Official Sets Small Builds 

6155: Deep Sea Predator

May 10, 2022May 10, 2022 Master Builder
7260: Wookiee Catamaran
Episode III Large Builds Official Sets Star Wars Star Wars Sets 

7260: Wookiee Catamaran

March 1, 2023March 1, 2023 Master Builder
725: Basic Building Set
Basic Extra Large Builds Official Sets Universal Building Set 

725: Basic Building Set

July 22, 2024July 22, 2024 Master Builder
6623: Police Car
Classic Town Official Sets Police Town Town Sets Very Small Builds 

6623: Police Car

October 13, 2021October 13, 2021 Master Builder
6980: Galaxy Commander
Classic Space Classic Space Sets Extra Large Builds Official Sets Space 

6980: Galaxy Commander

July 21, 2021July 21, 2021 Master Builder
1749: Paravane
Aquanauts Aquazone Aquazone Sets Official Sets Very Small Builds 

1749: Paravane

July 26, 2020July 26, 2020 Master Builder
6982: Explorien Starship
Exploriens Exploriens Sets Extra Large Builds Official Sets 

6982: Explorien Starship

November 9, 2019December 13, 2024 Master Builder
5978: Sphinx Secret Surprise
Adventurers Adventurers Sets Desert Large Builds Official Sets 

5978: Sphinx Secret Surprise

October 28, 2019April 4, 2020 Master Builder
6614: Launch Evac 1
ABCs Large Builds Launch Command Official Sets Town Town Sets 

6614: Launch Evac 1

June 30, 2023February 22, 2025 Master Builder
8024: Universal Set
Medium Builds Official Sets Technic Technic Sets 

8024: Universal Set

October 20, 2019August 28, 2023 Master Builder
6020: Magic Shop
Castle Castle Sets Dragon Knights Official Sets Small Builds 

6020: Magic Shop

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
  • 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.