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 6221 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

6393 – Back B

June 28, 2022June 30, 2024 Master Builder

6385 – Back B

August 7, 2022August 7, 2022 Master Builder

6395 – Back A

July 1, 2022July 1, 2022 Master Builder

Book 260 – Page 30-31

July 21, 2025August 2, 2025 Master Builder

7150 – Instructions 2

April 21, 2026April 21, 2026 Master Builder

6340 – Back D

November 20, 2023November 29, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Town Official Sets Supplemental Town

6347: Monorail Accessory Track

August 27, 2023August 27, 2023 Master Builder

Year Released: 1991Bricklink

ABCs Classic Town Official Sets Small Builds Town Town Sets Traffic

6655: Auto & Tire Repair

June 4, 2023July 31, 2023 Master Builder

Aquashark Aquazone Aquazone Sets Official Sets Small Builds

6155: Deep Sea Predator

May 10, 2022May 10, 2022 Master Builder

ABCs Airport Classic Town Extra Large Builds Official Sets Town Town Sets

6392: Airport

June 28, 2022August 16, 2023 Master Builder

Classic Town Official Sets Police Small Builds Town Town Sets

6533: Police 4×4

January 6, 2022January 6, 2022 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 Medium Builds Official Sets Town Town Sets Traffic

1490: Town Bank

January 23, 2024January 23, 2024 Master Builder

Bonus/Value Pack Sets Futron Sets Futuron Jørn Thomsen Official Sets Small Builds Space

1621: Lunar MPV Vehicle

September 6, 2023September 7, 2023 Master Builder

Official Sets Small Builds Space Spyrius Spyrius Sets Unitron Unitron Sets

1785: Introducing Crater Critters

December 28, 2021December 28, 2021 Master Builder

Batman I BATMAN™ BATMAN™ Sets Extra Large Builds Official Sets

7783: The Batcave: The Penguin and Mr. Freeze’s Invasion

March 27, 2026March 27, 2026 Master Builder

Bjarne Tveskov Futron Sets Futuron Official Sets Small Builds

6850: Auxiliary Patroller

September 24, 2019July 29, 2023 Master Builder

Classic Town Fire Medium Builds Official Sets Town Town Sets

6340: Hook & Ladder

December 29, 2021December 29, 2021 Master Builder

Duplicate Set Number Official Sets UFO UFO Sets Very Small Builds

6901-2: Space Plane

December 16, 2025December 16, 2025 Master Builder

Ice Planet 2002 Ice Planet 2002 Sets Official Sets Small Builds Space

6879: Blizzard Baron

November 20, 2019July 29, 2023 Master Builder

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

6278: Enchanted Island

February 20, 2025February 20, 2025 Master Builder

Official Sets Race Town Town Sets Very Small Builds

6510: Mud Runner

May 8, 2022May 8, 2022 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.