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

Unitron Sets

Official Sets Small Builds Space Spyrius Spyrius Sets Unitron Unitron Sets 

1785: Introducing Crater Critters

December 28, 2021December 28, 2021 Master Builder 6217 Views

Year Released: 1995BricklinkInstructions

Read more
Large Builds Official Sets Space Unitron Unitron Sets 

1793: Space Station Zenon

April 19, 2021April 19, 2021 Master Builder 7595 Views

Year Released: 1995Bricklink

Read more
Medium Builds Official Sets Space Unitron Unitron Sets 

1789: Star Hawk II

July 18, 2020July 18, 2020 Master Builder 7480 Views

Year Released: 1995InstructionsBricklink

Read more
Medium Builds Official Sets Space Unitron Unitron Sets 

1787: Crater Cruiser

April 9, 2020July 18, 2020 Master Builder 6916 Views

Year Released: 1995InstructionsBricklink

Read more
Extra Large Builds Jørn Thomsen Official Sets Space Unitron Unitron Sets 

6991: Monorail Transport Base

September 28, 2019July 29, 2023 Master Builder 9083 Views

Year Released: 1994Designer: Jørn ThomsenBricklinkInstructions

Read more

EXPLORE MORE OFFICIAL SETS

6988: Alpha Centauri Outpost
Blacktron II Blacktron II Sets Large Builds Official Sets 

6988: Alpha Centauri Outpost

October 24, 2019October 24, 2019 Master Builder

Year Released: 1991Bricklink

6388: Holiday Home with Caravan
Building Classic Town Large Builds Official Sets Town Town Sets 

6388: Holiday Home with Caravan

July 1, 2022July 1, 2022 Master Builder
6604: Formula-1 Racer
Official Sets Race Town Town Sets Very Small Builds 

6604: Formula-1 Racer

November 25, 2020November 25, 2020 Master Builder
6818: Cyborg Scout
Official Sets Small Builds Space UFO UFO Sets 

6818: Cyborg Scout

July 18, 2022July 18, 2022 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
6422: Telephone Repair
Official Sets Town Town Jr Town Sets Traffic Very Small Builds 

6422: Telephone Repair

July 28, 2020July 28, 2020 Master Builder
8000: Pit Droid
Large Builds Official Sets Technic Technic Sets 

8000: Pit Droid

September 11, 2023September 11, 2023 Master Builder
6562: Gas Stop Shop
Classic Town Gas Station Medium Builds Official Sets Town Town Sets Wrecker 

6562: Gas Stop Shop

September 19, 2022September 19, 2022 Master Builder
7186: Watto’s Junkyard
Episode I Extra Large Builds Official Sets Star Wars Star Wars Sets 

7186: Watto’s Junkyard

April 21, 2026April 21, 2026 Master Builder
6769: Fort Legoredo
Extra Large Builds Jørn Thomsen Official Sets Western Western Sets 

6769: Fort Legoredo

November 10, 2019July 29, 2023 Master Builder
6687: Turbo Prop I
Airport Classic Town Official Sets Small Builds Town Town Sets 

6687: Turbo Prop I

December 27, 2021December 27, 2021 Master Builder
6250: Cross Bone Clipper
Medium Builds Official Sets Pirates Pirates I Pirates Sets 

6250: Cross Bone Clipper

February 20, 2025February 20, 2025 Master Builder
6073: Knight’s Castle
Black Falcons Castle Castle Sets Daniel August Krentz Large Builds Official Sets 

6073: Knight’s Castle

October 23, 2019July 29, 2023 Master Builder
7780: The Batboat: Hunt for Killer Croc
Batman I BATMAN™ BATMAN™ Sets Medium Builds Official Sets 

7780: The Batboat: Hunt for Killer Croc

March 27, 2026March 27, 2026 Master Builder
6643: Fire Truck
Classic Town Fire Official Sets Small Builds Town Town Sets 

6643: Fire Truck

July 2, 2024July 2, 2024 Master Builder
4768: The Durmstrang Ship
Extra Large Builds Goblet of Fire Harry Potter Harry Potter Sets Official Sets 

4768: The Durmstrang Ship

May 16, 2023May 16, 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.