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

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

6877: Vector Detector

June 7, 2021October 14, 2024 Master Builder 5683 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

454: Two Lunar Landing Plates

July 11, 2024July 11, 2024 Master Builder

6875: Hovercraft

September 16, 2019October 16, 2024 Master Builder

6351 – Back B

July 14, 2021July 14, 2021 Master Builder

6110 – Back B

February 13, 2025February 13, 2025 Master Builder

6851: Tri-Wheeled Tyrax

October 24, 2019July 31, 2023 Master Builder

6990: Futuron Monorail Transport System

August 30, 2020February 12, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

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

4502: X-wing Fighter (Dagobah)

May 15, 2023May 15, 2023 Master Builder

Year Released: 2004BricklinkInstructions

ABCs Aquanauts Aquazone Aquazone Sets Medium Builds Official Sets

6175: Crystal Explorer Sub

January 20, 2022March 22, 2025 Master Builder

Classic Town Medium Builds Official Sets Recreation Town Town Sets

6359: Horse Trailer

October 8, 2024October 8, 2024 Master Builder

Extra Large Builds Goblet of Fire Harry Potter Harry Potter Sets Official Sets

4768: The Durmstrang Ship

May 16, 2023May 16, 2023 Master Builder

Airport Classic Town Official Sets Small Builds Town Town Sets

6615: Eagle Stunt Flyer

January 5, 2022January 5, 2022 Master Builder

Classic Town Hospital Large Builds Official Sets Town Town Sets

6380: Emergency Treatment Center (St. Mary’s Hospital)

July 15, 2022July 15, 2022 Master Builder

Classic Town Fire Medium Builds Official Sets Town Town Sets

6593: Blaze Battler

November 19, 2020November 19, 2020 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

Episode III Medium Builds Official Sets Star Wars Star Wars Sets

7252: Droid Tri-Fighter

March 3, 2023November 12, 2024 Master Builder

12V Large Builds Official Sets Town Train Train Sets

7725: Electric Passenger Train

December 29, 2021July 26, 2022 Master Builder

Box Plus FreeStyle FreeStyle Official Sets Official Sets Poster Small Builds

4150: FreeStyle Building Set

December 17, 2025December 17, 2025 Master Builder

Classic Town Food and Drink Medium Builds Official Sets Town Town Sets

6350: Pizza To Go

April 9, 2020February 3, 2021 Master Builder

Indians Official Sets Very Small Builds Western Western Sets

2846: Indian Kayak

October 10, 2023October 10, 2023 Master Builder

Aquashark Aquazone Aquazone Sets Official Sets Very Small Builds

6100: Aquashark Dart

March 20, 2023March 21, 2023 Master Builder

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

7119: Twin-Pod Cloud Car

February 26, 2023February 26, 2023 Master Builder

Classic Town Extra Large Builds Official Sets Town Town Sets Traffic

1592-2: Town Square – Castle Scene (Dutch Version)

October 22, 2021October 22, 2021 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 © 2025 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.