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

Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Very Small Alt Build Very Small Builds

6841 – Back B

October 3, 2019October 25, 2021 Master Builder 3775 Views

From: 6841: Mineral Detector
Name: TBD
Submitted by: matt_0937
Instructions: View PDF | Download .io File

← 6841 – Back A
6841 – Back C →

You May Also Like

6073 – Back B

October 23, 2019August 1, 2023 Master Builder

6399 – Back C

February 24, 2023March 17, 2024 Master Builder

720 – Inside B

February 8, 2024February 9, 2024 Master Builder

6959 – Back C

April 27, 2020April 27, 2020 Master Builder

6611 – Back B

February 20, 2024February 20, 2024 Master Builder

6481 – Back E

August 31, 2022September 19, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Town Fire Medium Builds Official Sets Town Town Sets

6593: Blaze Battler

November 19, 2020November 19, 2020 Master Builder

Year Released: 1991BricklinkInstructions

Classic Town Official Sets Supplemental Town

6311: Curved Road Plates

October 10, 2022October 10, 2022 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6807: Space Sledge with Astronaut and Robot

November 21, 2023November 21, 2023 Master Builder

Basic Extra Large Builds Official Sets Universal Building Set

735: Basic Building Set

September 15, 2022September 15, 2022 Master Builder

Imperial Soldiers Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets Very Small Builds

6245: Harbor Sentry

July 13, 2021July 29, 2023 Master Builder

Castle Castle Sets Dark Forest Official Sets Small Builds

6024: Bandit Ambush

April 16, 2021April 16, 2021 Master Builder

Holiday and Event Holiday and Event Sets Official Sets Small Builds

1549: Santa and Chimney

February 27, 2023February 27, 2023 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

6845: Cosmic Charger

January 14, 2025January 14, 2025 Master Builder

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

6543: Sail N’ Fly Marina

July 22, 2022July 22, 2022 Master Builder

Bonus/Value Pack Alternate Builds Castle Castle Alternate Builds Instructions Added Official Sets Royal Knights Small Alt Build Small Builds Space Spyrius Spyrius Alternate Builds

1843 – Side L

January 22, 2021March 14, 2025 Master Builder

Black Falcons Castle Castle Sets Official Sets Small Builds

6030: Catapult

April 2, 2022April 2, 2022 Master Builder

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

1627: Santa Polybag

May 2, 2023May 2, 2023 Master Builder

Basic Set Official Sets Samsonite Samsonite Sets

102: Super Value Set

March 1, 2023March 1, 2023 Master Builder

Classic Space Classic Space Sets Different Box Versions Different Set Numbers Jens Nygaard Knudsen LL Link Medium Builds Official Sets Space

924 (487): Space Cruiser

January 25, 2022October 17, 2024 Master Builder

Classic Town Official Sets Police Town Town Sets Very Small Builds

6623: Police Car

October 13, 2021October 13, 2021 Master Builder

Official Sets Racers Radio Control Small Builds

8675: Outdoor Challenger

July 15, 2024July 15, 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.