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 Instructions Added Space Space Police I Space Police I Alternate Builds Very Small Alt Build Very Small Builds

6831 – Back B

May 3, 2020November 18, 2021 Master Builder 3317 Views

From: 6831: Message Decoder
Name: Transmission Interceptor ¹
Instructions: View PDF | Download .io File

Contributions

PDF and .io file submitted on November 17, 2021 by: Krysto

← 6831 – Back A
6831 – Back C →

You May Also Like

6983: Ice Station Odyssey

November 9, 2019March 20, 2025 Master Builder

1747: Treasure Cave

May 6, 2022May 6, 2022 Master Builder

Kabaya: Space

September 9, 2024February 25, 2025 Master Builder

857 – Back

January 6, 2025January 6, 2025 Master Builder

6980: Galaxy Commander

July 21, 2021July 21, 2021 Master Builder

4706 – Back A

June 12, 2024June 17, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

Episode IV/V/VI Large Builds Official Sets Star Wars Star Wars Sets

7166: Imperial Shuttle

April 16, 2021September 4, 2023 Master Builder

Year Released: 2001BricklinkInstructions

Extreme Team Official Sets Small Builds Town Town Sets

6580: Land Jet 7

June 25, 2025June 25, 2025 Master Builder

Classic Town Medium Builds Official Sets Race Town Town Sets

6334: Wave Jump Racers

June 27, 2022June 27, 2022 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets Space

6970: Beta-1 Command Base

January 20, 2021January 20, 2021 Master Builder

Basic Large Builds Official Sets Universal Building Set

565: Build-N-Store Chest

December 28, 2023July 11, 2024 Master Builder

Castle Castle Sets Crusaders Official Sets Small Builds

6042: Dungeon Hunters

October 1, 2024October 1, 2024 Master Builder

Extra Large Builds Model Team Model Team Sets Official Sets

5550: Custom Rally Van

February 9, 2026March 4, 2026 Master Builder

Divers Medium Builds Official Sets Town Town Sets

6442: Sting Ray Explorer

December 29, 2021December 29, 2021 Master Builder

Exo-Force Medium Builds Official Sets

7704: Sonic Phantom

April 28, 2023April 28, 2023 Master Builder

Classic Town LL Link Official Sets Race Small Builds Town Town Sets

6648: Mag Racer

November 19, 2020July 11, 2024 Master Builder

Classic Town Extra Large Builds Fire Official Sets Town Town Sets

6389: Fire Control Center

January 24, 2022January 24, 2022 Master Builder

Box Story Daniel August Krentz Extra Large Builds Imperial Soldiers Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets

6276: Eldorado Fortress

January 28, 2022April 3, 2024 Master Builder

Episode I Official Sets Star Wars Star Wars Sets Very Small Builds

7203: Jedi Defense I

June 27, 2022June 27, 2022 Master Builder

Basic Large Builds Official Sets Universal Building Set

535: Basic Building Set Tote Pack

May 15, 2023May 16, 2023 Master Builder

9V Large Builds Official Sets Town Train Train Sets

4555: Cargo Station

January 2, 2024January 2, 2024 Master Builder

Classic Town Fire Official Sets Small Builds Town Town Sets

6643: Fire Truck

July 2, 2024July 2, 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.