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 Classic Space Classic Space Sets Medium Builds Official Sets Space 

6780: XT-Starship

October 12, 2021September 9, 2024 Master Builder 7007 Views

Year Released: 1986
Bricklink
Instructions

*Alternate Build Connection: 1988 Classic Space and Blacktron with Zack Commercial

Back A
Back B
Back C
Back D
Back E
  • ← 6926 – Back D
  • 6780 – Back A →

You May Also Like

6433 – Back A

July 10, 2024July 10, 2024 Master Builder

6951 – Back B

September 21, 2019October 25, 2021 Master Builder

6822: Space Digger

March 12, 2024March 12, 2024 Master Builder

920 – Back F

February 2, 2021October 25, 2021 Master Builder

6645: Street Sweeper

November 20, 2020November 20, 2020 Master Builder

6062 – Back A

August 18, 2023August 22, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

4536: Blue Hopper Car
9V Medium Builds Official Sets Train Train Sets 

4536: Blue Hopper Car

July 10, 2026July 10, 2026 Master Builder

Year Released: 1991InstructionsBricklink

1843-3: {Royal Knights Unknown}
Bonus/Value Pack Sets Castle Castle Sets Official Sets Royal Knights Small Builds 

1843-3: {Royal Knights Unknown}

September 8, 2023September 13, 2023 Master Builder
6508: Wave Racer
Official Sets Race Town Town Sets Very Small Builds 

6508: Wave Racer

October 23, 2026October 23, 2026 Master Builder
1793: Space Station Zenon
Large Builds Official Sets Space Unitron Unitron Sets 

1793: Space Station Zenon

April 19, 2021April 19, 2021 Master Builder
7146: TIE Fighter
Episode IV/V/VI Medium Builds Official Sets Star Wars Star Wars Sets 

7146: TIE Fighter

February 19, 2025February 19, 2025 Master Builder
7166: Imperial Shuttle
Episode IV/V/VI Large Builds Official Sets Star Wars Star Wars Sets 

7166: Imperial Shuttle

April 16, 2021September 4, 2023 Master Builder
1843 – Side L
Bonus/Value Pack Alternate Builds Castle Castle Alternate Builds Instructions Added Official Sets Royal Knights Small Alt Build Small Builds Space Spyrius Spyrius Alternate Builds 

1843 – Side L

January 22, 2021March 14, 2025 Master Builder
6580: Land Jet 7
Extreme Team Official Sets Small Builds Town Town Sets 

6580: Land Jet 7

June 25, 2025June 25, 2025 Master Builder
4500: Rebel Snowspeeder
Episode II Episode IV/V/VI Medium Builds Official Sets Star Wars Star Wars Sets 

4500: Rebel Snowspeeder

April 9, 2020April 9, 2020 Master Builder
4563: Load N’ Haul Railroad
9V Extra Large Builds Official Sets Town Train Train Sets 

4563: Load N’ Haul Railroad

July 26, 2022June 23, 2026 Master Builder
8956: Stone Chopper
Official Sets Power Miners Power Miners Sets Small Builds 

8956: Stone Chopper

March 27, 2026March 27, 2026 Master Builder
7303 (1415, Kabaya: Life On Mars 3): Jet Scooter
Life on Mars Life on Mars Sets Official Sets Very Small Builds 

7303 (1415, Kabaya: Life On Mars 3): Jet Scooter

February 25, 2025February 25, 2025 Master Builder
780: Road Construction Set
Hospital LEGOLAND Medium Builds Official Sets 

780: Road Construction Set

February 14, 2024February 14, 2024 Master Builder
2586: King & Throne (Chess King)
Castle Castle Sets Official Sets Very Small Builds 

2586: King & Throne (Chess King)

January 29, 2021January 29, 2021 Master Builder
6870: Space Probe Launcher
Classic Space Classic Space Sets Official Sets Small Builds Space 

6870: Space Probe Launcher

January 12, 2021January 12, 2021 Master Builder
6835: Saucer Scout
Jørn Thomsen Official Sets Small Builds Spyrius Spyrius Sets 

6835: Saucer Scout

November 9, 2019July 29, 2023 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.