Skip to content

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
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 Space Very Small Alt Build Very Small Builds

T42

March 9, 2025March 22, 2025 Master Builder 6799 Views

Misc
Build: T42 ¹
Instructions: View PDF | Download .io File

Also Pictured: Blacktron Time Machine

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

Contributions

PDF and .io file submitted March 9, 2025 by: tutmosic

← Super Stunt Machine
7194: Yoda – UCS →

You May Also Like

6828 – Back C

January 23, 2025January 30, 2025 Master Builder

6533 – Back A

February 3, 2022February 9, 2022 Master Builder

6975 – Back A

November 9, 2019July 21, 2025 Master Builder

920 (483): Alpha-1 Rocket Base

February 2, 2021July 31, 2023 Master Builder

Book 6000 – Page 22-23

November 6, 2021February 8, 2024 Master Builder

6953 – Back A

May 16, 2023May 17, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

ABCs Classic Space Classic Space Sets Medium Builds Official Sets Space

6931: FX-Star Patroller

January 12, 2021March 20, 2025 Master Builder

Year Released: 1985BricklinkInstructions *Alternate Build Connection: Space Mother Ship

Jørn Thomsen Large Builds Official Sets Spyrius Spyrius Sets

6959: Lunar Launch Site

April 27, 2020July 29, 2023 Master Builder

Futuron Official Sets Space Supplemental

6921: Monorail Accessory Track

September 1, 2023January 22, 2026 Master Builder

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

7146: TIE Fighter

February 19, 2025February 19, 2025 Master Builder

Black Knights Castle Castle Sets Extra Large Builds Niels Milan Pedersen Official Sets

6086: Black Knight’s Castle

October 11, 2021July 29, 2023 Master Builder

Classic Town Official Sets Police Small Builds Town Town Sets

1895: Sky Patrol

June 1, 2022June 1, 2022 Master Builder

Airport Classic Town Medium Builds Official Sets Town Town Sets

6368: Jet Airliner

January 21, 2021January 21, 2021 Master Builder

Box Story Imperial Soldiers Large Builds Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets

6274: Caribbean Clipper

February 8, 2022February 21, 2025 Master Builder

Bonus/Value Pack Sets Bonus/Value Packs Official Sets Small Builds

1597: Castle 3-Pack

July 22, 2024January 20, 2026 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6661: TV Van (Mobile TV Studio)

February 3, 2022February 3, 2022 Master Builder

Classic Space Classic Space Sets Medium Builds Official Sets Space

6928: Uranium Search Vehicle

January 12, 2021October 21, 2024 Master Builder

Classic Town Hospital Large Builds Official Sets Town Town Sets

1896: Trauma Team

April 4, 2022April 4, 2022 Master Builder

ABCs Official Sets Small Builds Space UFO UFO Sets

6829: Radon Rover

August 4, 2020March 22, 2025 Master Builder

Classic Space Classic Space Sets Official Sets Space Supplemental

305: Two Crater Plates

March 6, 2026March 6, 2026 Master Builder

Belville Belville Sets Lion Knights Official Sets Playhouse Very Small Builds

5810: Vanity Fun

April 10, 2021April 10, 2021 Master Builder

Castle Castle Sets Lion Knights Official Sets Very Small Builds

6021: Jousting Knights

September 25, 2024September 25, 2024 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
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.