Skip to content

Back of the Box Builds

LEGO Alternate Builds!

SETS
- Adventurers
- Aquazone
- 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
THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP

Blacktron Blacktron Alternate Builds Captain Indigo Concepts and Prototypes Instructions Added LEGO Builders Club LEGO Magazine Small Alt Build Small Builds Space

Blacktron Time Machine

March 1, 2025March 22, 2025 Master Builder 5858 Views

Misc
Build: Blacktron Time Machine ¹
Instructions: View PDF | Download .io File

Also pictured: T42

Bricks n Pieces: Spring 1988 – Page 4
UK LEGO Club Magazine

Contributions

PDF and .io file submitted March 3, 2025 by: Mr.AstonishedRaccoon

← 3676 – Back E
6469: Spaceport Bonus Pack →

You May Also Like

3442: Legoland California Truck Limited Edition

October 13, 2021October 13, 2021 Master Builder

Book 6000 – Page 54-55

November 7, 2021January 18, 2022 Master Builder

6335 – Back D

December 22, 2023January 1, 2024 Master Builder

6971 – Back A

September 14, 2019October 25, 2021 Master Builder

4723: Diagon Alley Shops

July 10, 2024October 8, 2024 Master Builder

6431: Road Rescue

January 20, 2022January 20, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Black Falcons Castle Castle Sets Official Sets Small Builds

6030: Catapult

April 2, 2022April 2, 2022 Master Builder

Year Released: 1984BricklinkInstructions

Castle Castle Sets Crusaders Official Sets Small Builds

6042: Dungeon Hunters

October 1, 2024October 1, 2024 Master Builder

Classic Town Construction Official Sets Town Town Sets Very Small Builds

6532: Diesel Dumper

November 19, 2020November 19, 2020 Master Builder

Medium Builds Official Sets Technic Technic Sets

8044: Universal Pneumatic Set

August 23, 2024August 23, 2024 Master Builder

ABCs Exploriens Exploriens Sets Official Sets Small Builds Space

6856: Planetary Decoder

April 16, 2021March 22, 2025 Master Builder

Episode I Official Sets Star Wars Star Wars Sets Very Small Builds

7204: Jedi Defense II

June 27, 2022June 27, 2022 Master Builder

Classic Town Official Sets Recreation Small Builds Town Town Sets

6665: River Runners

June 1, 2022June 1, 2022 Master Builder

Bjarne Tveskov Futron Sets Futuron Official Sets Small Builds

6875: Hovercraft

September 16, 2019October 16, 2024 Master Builder

Official Sets Space Port Town Town Sets Very Small Builds

6458: Satellite with Astronaut

December 17, 2025December 17, 2025 Master Builder

Classic Town Official Sets Police Town Town Sets Very Small Builds

600: Police Patrol

July 11, 2024July 11, 2024 Master Builder

Chamber of Secrets Harry Potter Harry Potter Sets Medium Builds Official Sets

4720: Knockturn Alley

July 9, 2024July 9, 2024 Master Builder

Classic Town Off-Road Official Sets Small Builds Town Town Sets

6660: Hook and Haul Wrecker

June 23, 2025June 23, 2025 Master Builder

Episode IV/V/VI Official Sets Small Builds Star Wars Star Wars Sets

7119: Twin-Pod Cloud Car

February 26, 2023February 26, 2023 Master Builder

Futron Sets Futuron Medium Builds Official Sets

6893: Orion II Hyperspace

September 25, 2019September 28, 2019 Master Builder

Official Sets Space Port Town Town Sets Very Small Builds

6452: Mini Rocket Launcher

October 3, 2024October 3, 2024 Master Builder

Harry Potter Harry Potter Sets Large Builds Official Sets Sorcerer's Stone

4707: Hagrid’s Hut

December 29, 2021December 29, 2021 Master Builder

BOXES

INSTRUCTIONS

FAVORITES

MINIFIGS

About This Site

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
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.