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 3845 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

6831 – Back C

May 3, 2020November 18, 2021 Master Builder

6971 – Back B

September 14, 2019September 28, 2019 Master Builder

6062 – Back B

August 18, 2023August 22, 2023 Master Builder

1954 – Back B

January 26, 2022January 26, 2022 Master Builder

4714 – Back D

March 2, 2023March 2, 2023 Master Builder

6258 – Back A

July 8, 2022July 12, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

ABCs Box Story Jørn Thomsen Large Builds Official Sets Space Space Police II Space Police II Sets

6957: Solar Snooper

March 18, 2022February 18, 2025 Master Builder

Year Released: 1992Designer: Jørn ThomsenBricklinkInstructions *Alternate Build Connection: RTron The box reads, “A new and exciting building adventure awaits you with every

Adventurers Adventurers Sets Desert Large Builds Official Sets

5958: Mummy’s Tomb

October 27, 2019July 14, 2022 Master Builder

Blacktron Blacktron Sets Large Builds Official Sets

6941: Battrax

September 13, 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

Basic Large Builds Official Sets Universal Building Set

710: Universal Building Set

February 22, 2024February 22, 2024 Master Builder

Official Sets Space Port Town Very Small Builds

3066 (Kabaya: Town Space Port 1): Cosmos Glider

February 28, 2025February 28, 2025 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

ABCs Bjarne Tveskov Blacktron II Blacktron II Sets Official Sets Small Builds

6878: Sub Orbital Guardian

October 4, 2019August 14, 2023 Master Builder

Bjarne Tveskov Duplicate Set Number Futron Sets Futuron Official Sets Small Builds Space

6848: Strategic Pursuer

April 16, 2021March 11, 2024 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

1499: Twin Starfire

February 3, 2021February 3, 2021 Master Builder

Castle Castle Sets Fright Knights Official Sets Small Builds

6027: Bat Lord’s Catapult

January 28, 2022January 28, 2022 Master Builder

Extra Large Builds Goblet of Fire Harry Potter Harry Potter Sets Official Sets

4768: The Durmstrang Ship

May 16, 2023May 16, 2023 Master Builder

Medium Builds Official Sets Technic Technic Sets

8024: Universal Set

October 20, 2019August 28, 2023 Master Builder

Castle Castle Sets Forestmen Lion Knights Official Sets Small Builds

6055: Prisoner Convoy

May 20, 2021October 1, 2024 Master Builder

Large Builds Official Sets Time Cruisers Time Cruisers Sets

6493: Flying Time Vessel

July 14, 2021December 29, 2021 Master Builder

Classic Town Large Builds Official Sets Police Town Town Sets

6384: Police Station

December 28, 2021December 28, 2021 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.