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
- Train
- 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 6791 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

Book 250 – Page 40-41

September 30, 2025October 16, 2025 Master Builder

1787 – Back B

September 14, 2023September 18, 2023 Master Builder

1499: Twin Starfire

February 3, 2021February 3, 2021 Master Builder

6886 – Back B

April 8, 2020October 25, 2021 Master Builder

6970 – Back F

January 20, 2021October 25, 2021 Master Builder

6335 – Back E

December 22, 2023January 1, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Town Food and Drink Medium Builds Official Sets Town Town Sets

6350: Pizza To Go

April 9, 2020February 3, 2021 Master Builder

Year Released: 1994BricklinkInstructions

Classic Town Fire Official Sets Town Town Sets Very Small Builds

6611: Fire Chief’s Car

February 20, 2024February 20, 2024 Master Builder

Alpha Team Alpha Team Sets Medium Builds Mission Deep Sea Official Sets

4789: AT Aquatic Mech

February 12, 2024February 21, 2024 Master Builder

Official Sets Pirates Pirates I Pirates Sets Very Small Builds

6234: Renegade’s Raft

May 23, 2022May 23, 2022 Master Builder

Medium Builds Official Sets Space Unitron Unitron Sets

1787: Crater Cruiser

April 9, 2020July 18, 2020 Master Builder

Castle Castle Sets Dark Forest Medium Builds Official Sets

6046: Hemlock Stronghold

November 18, 2021November 18, 2021 Master Builder

Large Builds Model Team Model Team Sets Official Sets

5521: Sea Jet

January 12, 2021January 31, 2026 Master Builder

Official Sets Small Builds Studio Sets Studios

1380: Werewolf Ambush

December 16, 2025December 16, 2025 Master Builder

Goblet of Fire Harry Potter Harry Potter Sets Medium Builds Official Sets

4762: Rescue from the Merpeople

May 16, 2023May 16, 2023 Master Builder

Classic Space Classic Space Sets Duplicate Set Number Official Sets Small Builds Space

6848: Interplanetary Shuttle

March 11, 2024March 11, 2024 Master Builder

Box Plus Harry Potter Harry Potter Sets Official Sets Playscape/Play Stage Box Small Builds Sorcerer's Stone

4723: Diagon Alley Shops

July 10, 2024October 8, 2024 Master Builder

Medium Builds Official Sets Super Model Technic Technic Alternate Builds Technic Sets

120270: The Great Technic Racer

March 8, 2025March 8, 2025 Master Builder

Building Classic Town Medium Builds Official Sets Town Town Sets

1484: Weetabix Town House

December 28, 2021December 28, 2021 Master Builder

Official Sets Pirates Pirates I Pirates Sets Very Small Builds

6235: Buried Treasure

May 23, 2022May 23, 2022 Master Builder

Castle Castle Sets Official Sets Small Builds Wolfpack

6038: Wolfpack Renegades

October 14, 2021October 14, 2021 Master Builder

2 in 1 Medium Builds Official Sets Technic Technic Sets

42089: Power Boat

August 28, 2026August 28, 2026 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
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.