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

ABCs M:Tron M:Tron Sets Official Sets Small Builds Space

6877: Vector Detector

June 7, 2021October 14, 2024 Master Builder 6674 Views

Year Released: 1990
Bricklink
Instructions

*Alternate Build Connection: 6862: Secret Space Voyager

Back A

Back A

← 6055: Prisoner Convoy
6877 – Back A →

You May Also Like

6738: Skateboard Challenge

April 13, 2026April 13, 2026 Master Builder

6375 – Back C

November 20, 2020November 20, 2020 Master Builder

1965: Basic Building Set

March 6, 2026March 6, 2026 Master Builder

6024 – Back B

April 16, 2021April 16, 2021 Master Builder

6990 – Back B

August 30, 2020March 10, 2025 Master Builder

6887: Allied Avenger

October 5, 2019July 31, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Town Official Sets Supplemental Town

6312: Straight Road Plates

October 10, 2022October 10, 2022 Master Builder

Year Released: 1986Bricklink

LEGOLAND Medium Builds Official Sets Space

358: Rocket Base

March 5, 2026March 5, 2026 Master Builder

Classic Town Official Sets Race Town Town Sets Very Small Builds

1750: Renault Formula 1 Racer

July 13, 2021July 13, 2021 Master Builder

Box Marketing Blurb Castle Castle Sets Forestmen Medium Builds Official Sets

6071: Forestmen’s Crossing

October 23, 2019April 3, 2024 Master Builder

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

7785: Arkham Asylum

March 30, 2026March 30, 2026 Master Builder

Divers Extra Large Builds Official Sets Town Town Sets

6560: Diving Expedition Explorer

April 3, 2022April 3, 2022 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets

6972: Polaris I Space Lab

September 12, 2019November 21, 2023 Master Builder

Jørn Thomsen Large Builds Official Sets Spyrius Spyrius Sets

6959: Lunar Launch Site

April 27, 2020July 29, 2023 Master Builder

Large Builds Official Sets Star Wars Star Wars Sets

7161: Gungan Sub

April 21, 2026April 21, 2026 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

9V Medium Builds Official Sets Train Train Sets

4536: Blue Hopper Car

July 10, 2026July 10, 2026 Master Builder

Jørn Thomsen Official Sets Small Builds Space Space Police II Space Police II Sets

6852: Sonar Security

September 22, 2020July 29, 2023 Master Builder

Large Builds Model Team Model Team Sets Official Sets

5540: Formula I Racer

February 10, 2026March 4, 2026 Master Builder

Classic Town Official Sets Police Small Builds Town Town Sets

6664: Chopper Cops

May 3, 2020May 3, 2020 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

535: Basic Building Set Tote Pack

May 15, 2023May 16, 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.