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 Blacktron Blacktron Alternate Builds Extra Large Alt Build Extra Large Builds Instructions Added

6987 – Back D

February 24, 2022March 2, 2026 Master Builder 6092 Views

From: 6987: Message Intercept Base
Name: Message Debugging Unit ¹
Instructions: View PDF | Download .io File

Contributions

Name, PDF, and .io file submitted on February 24, 2022 by: Valdis

← 6886 – Back A
6027 – Back C →

You May Also Like

6263 – Back B

February 24, 2026March 3, 2026 Master Builder

2963 – Back A

January 30, 2024January 30, 2024 Master Builder

1682 – Inside B

July 25, 2024July 25, 2024 Master Builder

6666 – Back B

August 31, 2022September 19, 2022 Master Builder

5956 – Back B

August 31, 2024August 31, 2024 Master Builder

1821 – Back A

February 10, 2025February 10, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

Indians Jørn Thomsen Medium Builds Official Sets Western Western Sets

6746: Chief’s Tepee

February 27, 2023July 29, 2023 Master Builder

Year Released: 1997Designer: Jørn ThomsenBricklinkInstructions

Cargo Classic Town Medium Builds Official Sets Town Town Sets

6367: Truck

February 17, 2023February 17, 2023 Master Builder

Arctic Medium Builds Official Sets Town Town Sets

6579: Ice Surfer

May 22, 2026May 22, 2026 Master Builder

Airport Medium Builds Official Sets Town Town Sets World City

4032: Passenger Plane

December 29, 2021December 29, 2021 Master Builder

Classic Space Classic Space Sets Official Sets Very Small Builds

6801: Moon Buggy

September 22, 2019September 28, 2019 Master Builder

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

6278: Enchanted Island

February 20, 2025February 20, 2025 Master Builder

Classic Town Harbor Official Sets Small Builds Town Town Sets Wrecker

6663: Wave Rebel

June 6, 2022June 6, 2022 Master Builder

Classic Space Classic Space Sets Medium Builds Official Sets Space

6928: Uranium Search Vehicle

January 12, 2021October 21, 2024 Master Builder

Official Sets Paradisa Town Town Sets Very Small Builds

6402: Sidewalk Cafe

October 5, 2019January 14, 2021 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 Space Classic Space Sets Official Sets Space Supplemental

305: Two Crater Plates

March 6, 2026March 6, 2026 Master Builder

Classic Town Fire Medium Builds Official Sets Town Town Sets

6340: Hook & Ladder

December 29, 2021December 29, 2021 Master Builder

ABCs Official Sets Race Town Town Sets Very Small Builds

6677: Motocross Racing

June 8, 2023July 31, 2023 Master Builder

9V Medium Builds Official Sets Train Train Sets

4536: Blue Hopper Car

July 10, 2026July 10, 2026 Master Builder

Classic Town Large Builds Official Sets Recreation Town Town Sets

6563: Gator Landing

July 20, 2022July 20, 2022 Master Builder

Box Story Imperial Armada Large Builds Official Sets Pirates Pirates I Pirates Sets

6280: Armada Flagship

July 13, 2021February 20, 2025 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.