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

Classic Space Classic Space Sets Official Sets Very Small Builds

6841: Mineral Detector

October 3, 2019October 3, 2019 Master Builder 6640 Views

Year Released: 1980
Bricklink

Back A
Back B
Back C
Back D

← 6881 – Back D
6841 – Back A →

You May Also Like

6469: Spaceport Bonus Pack

March 3, 2025March 3, 2025 Master Builder

6989: Mega Core Magnetizer (Multi Core Magentizer)

September 15, 2019February 18, 2026 Master Builder

6991: Monorail Transport Base

September 28, 2019July 29, 2023 Master Builder

4910 – Back C

March 1, 2023March 1, 2023 Master Builder

6021 – Back C

September 25, 2024September 25, 2024 Master Builder

6556: Scuba Squad

June 28, 2022June 28, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Box Story Fabuland Fabuland Sets Medium Builds Official Sets

132: Cottage

March 1, 2023April 3, 2024 Master Builder

Year Released: 1979Bricklink The box reads, “FABULAND™ is the name of a wonderful world, combining limitless fantasy with easy building. With

Medium Builds Official Sets Space Unitron Unitron Sets

1787: Crater Cruiser

April 9, 2020July 18, 2020 Master Builder

Boat Fire Medium Builds Official Sets

775: Fire Fighter Ship

July 22, 2024July 22, 2024 Master Builder

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

4704: The Chamber of the Winged Keys

May 28, 2024May 28, 2024 Master Builder

Bonus/Value Packs Classic Space Classic Space Sets Duplicate Set Number Official Sets Small Builds Space

1967: System Bonus Pack

February 13, 2025February 13, 2025 Master Builder

Box Plus FreeStyle FreeStyle Official Sets Official Sets Poster Small Builds

4150: FreeStyle Building Set

December 17, 2025December 17, 2025 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets

6971: Inter-Galactic Command Base

September 12, 2019September 28, 2019 Master Builder

Belville Belville Sets Lion Knights Official Sets Recreation Very Small Builds

5830: Fun-Day Sundaes

April 19, 2021April 19, 2021 Master Builder

Classic Town Official Sets Supplemental Town

6311: Curved Road Plates

October 10, 2022October 10, 2022 Master Builder

Classic Town Fire Official Sets Town Town Sets Very Small Builds

6511: Rescue Runabout

May 10, 2022May 10, 2022 Master Builder

Basic Official Sets Small Builds Universal Building Set

385-2: Build-N-Store Chest

September 8, 2025September 8, 2025 Master Builder

Adventurers Adventurers Sets Box Story Desert Extra Large Builds Official Sets

5988: Pharaoh’s Forbidden Ruins

October 29, 2019March 7, 2025 Master Builder

Classic Space Classic Space Sets Medium Builds Official Sets Space

1968: {Unknown}

August 28, 2020September 13, 2023 Master Builder

Batman I BATMAN™ BATMAN™ Sets Large Builds Official Sets

7782: The Batwing: Joker’s Aerial Assault

March 27, 2026March 27, 2026 Master Builder

Classic Town Extra Large Builds Gas Station Official Sets Town Town Sets Wrecker

6397: Gas N’ Wash Express

July 14, 2021July 14, 2021 Master Builder

Battle Vehicles BIONICLE BIONICLE Sets Extra Large Builds Official Sets

8942: Jetrax T6

March 4, 2026March 4, 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.