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

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

6831 – Back A

May 3, 2020November 18, 2021 Master Builder 4442 Views

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

Contributions

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

← 6831: Message Decoder
6831 – Back B →

You May Also Like

6505 – Back B

July 8, 2022July 8, 2022 Master Builder

710 – Back E

February 22, 2024February 22, 2024 Master Builder

4479 – Back A

January 6, 2025January 7, 2025 Master Builder

6264 – Back C

August 31, 2022September 16, 2022 Master Builder

1630 – Back B

April 8, 2025April 8, 2025 Master Builder

6890 – Back A

October 7, 2019October 25, 2021 Master Builder

EXPLORE MORE OFFICIAL SETS

ABCs Classic Town Construction Medium Builds Official Sets Town Town Sets

6352: Cargomaster Crane

June 4, 2023February 12, 2025 Master Builder

Year Released: 1991BricklinkInstructions *Alternate Build Connection: M:Tron Prototypes (BrickJournal: Issue 6 Volume 2, BrickJournal: Issue 12, LEGO® Space: 1978-1992)

Box Story Islanders Medium Builds Official Sets Pirates Pirates I Pirates Sets

6278: Enchanted Island

February 20, 2025February 20, 2025 Master Builder

Episode III Medium Builds Official Sets Star Wars Star Wars Sets

7256: Jedi Starfighter & Vulture Droid

March 1, 2023May 12, 2023 Master Builder

Classic Town Construction Official Sets Town Town Sets Very Small Builds

6630: Bucket Loader

October 13, 2021October 13, 2021 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

Official Sets Small Builds Star Wars Star Wars Sets

7121: Naboo Swamp

March 2, 2023March 2, 2023 Master Builder

Aquazone Aquazone Sets Box Story Hydronauts Large Builds Official Sets

6180: Hydro Search Sub

February 18, 2025February 18, 2025 Master Builder

Arctic Medium Builds Official Sets Town Town Sets

6579: Ice Surfer

May 22, 2026May 22, 2026 Master Builder

Medium Builds Official Sets Space Port Town Town Sets

6454: Countdown Corner

July 14, 2021July 14, 2021 Master Builder

Gears Medium Builds Official Sets Universal Building Set

801: Gear Set

December 17, 2025December 17, 2025 Master Builder

Black Knights Castle Castle Sets Official Sets Very Small Builds

6009: Black Knight

April 9, 2020April 9, 2020 Master Builder

Building Classic Town Medium Builds Official Sets Town Town Sets

6349: Vacation House

July 1, 2021July 12, 2021 Master Builder

Extra Large Builds Imperial Guards Official Sets Pirates Pirates I Pirates Sets

6277: Imperial Trading Post

January 6, 2022January 6, 2022 Master Builder

Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets Small Builds

6260: Shipwreck Island

April 9, 2020July 29, 2023 Master Builder

Box Plus Castle Castle Sets Dragon Knights Medium Builds Official Sets Playscape/Play Stage Box

1906: Majisto’s Tower

August 1, 2023October 8, 2024 Master Builder

Adventurers Adventurers Sets Desert Official Sets Small Builds

5928: Bi-Wing Baron

February 22, 2023February 22, 2023 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.