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 5859 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

6379 – Back C

August 1, 2022May 17, 2023 Master Builder

6933 – Back A

May 18, 2022May 23, 2022 Master Builder

6679 – Back B

February 9, 2022March 15, 2022 Master Builder

928 – Back G

November 22, 2025November 25, 2025 Master Builder

4883 – Instructions F

August 2, 2021August 28, 2024 Master Builder

Book 250 – Page 42-43

September 30, 2025October 16, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

Episode I Medium Builds Official Sets Star Wars Star Wars Sets

7141: Naboo Fighter

December 29, 2021December 29, 2021 Master Builder

Year Released: 2000BricklinkInstructions

Box Story Large Builds Official Sets Pirates Pirates I Pirates Sets

6279: Skull Island

February 21, 2025February 21, 2025 Master Builder

Holiday and Event Holiday and Event Sets Official Sets Very Small Builds

1555: Santa Claus Polybag

April 28, 2023April 28, 2023 Master Builder

Classic Town Official Sets Race Town Town Sets Very Small Builds

1750: Renault Formula 1 Racer

July 13, 2021July 13, 2021 Master Builder

Castle Castle Sets Official Sets Small Builds Wolfpack

6038: Wolfpack Renegades

October 14, 2021October 14, 2021 Master Builder

Aquashark Aquazone Aquazone Sets Official Sets Small Builds

6155: Deep Sea Predator

May 10, 2022May 10, 2022 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6667: Pothole Patcher

November 19, 2020November 19, 2020 Master Builder

Castle Castle Sets Classic Castle Official Sets Very Small Builds

6077: Knight’s Procession

July 13, 2021July 13, 2021 Master Builder

Classic Town Extra Large Builds Harbor Official Sets Town Town Sets Wrecker

6542: Launch & Load Seaport

August 1, 2022August 1, 2022 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

6845: Cosmic Charger

January 14, 2025January 14, 2025 Master Builder

Classic Town Medium Builds Official Sets Town Town Sets Traffic

6363: Auto Service Station

February 17, 2023February 17, 2023 Master Builder

Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets Small Builds

6260: Shipwreck Island

April 9, 2020July 29, 2023 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

1498: Spy-Bot

March 11, 2024March 11, 2024 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets Space Super Model

1593: Super Model

February 3, 2021March 18, 2024 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6820: Starfire I

January 12, 2021January 12, 2021 Master Builder

Basic Large Builds Official Sets Universal Building Set

720: Basic Building Set

February 8, 2024February 9, 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
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.