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
- 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 M:Tron M:Tron Alternate Builds Small Alt Build Small Builds Space

6877 – Back B

June 7, 2021January 6, 2025 Master Builder 4442 Views

From: 6877: Vector Detector
Name: Determinator ¹
Instructions: View PDF | Download .io File

Contributions

Name, PDF and .io file submitted on November 16, 2021 by: IceAge2002

← 6877 – Back A
6877 – Back C →

You May Also Like

2963: Extreme Racer

January 30, 2024January 30, 2024 Master Builder

6808 – Back B

January 21, 2021May 18, 2023 Master Builder

6614 – Back B

June 30, 2023June 30, 2023 Master Builder

6706 – Back B

October 10, 2023October 10, 2023 Master Builder

6828 – Back C

January 23, 2025January 30, 2025 Master Builder

6495: Time Tunnelator

July 14, 2021July 14, 2021 Master Builder

EXPLORE MORE OFFICIAL SETS

Bjarne Tveskov Futron Sets Futuron Medium Builds Official Sets Space

6953: Cosmic Laser Launcher

February 3, 2021July 29, 2023 Master Builder

Year Released: 1987Designer: Bjarne TveskovBricklinkInstructions

Large Builds LEGOLAND Official Sets Space

565: Moon Landing

July 11, 2024July 11, 2024 Master Builder

Castle Castle Sets Official Sets Very Small Builds

2586: King & Throne (Chess King)

January 29, 2021January 29, 2021 Master Builder

Episode I Official Sets Star Wars Star Wars Sets Very Small Builds

7203: Jedi Defense I

June 27, 2022June 27, 2022 Master Builder

Extra Large Builds Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets

6286: Skull’s Eye Schooner

February 8, 2022July 29, 2023 Master Builder

Official Sets Small Builds Star Wars Star Wars Sets

7124: Flash Speeder

November 15, 2019November 15, 2019 Master Builder

Exo-Force Official Sets Small Builds

7708: Uplink

August 11, 2023August 11, 2023 Master Builder

Futuron Official Sets Space Supplemental

6921: Monorail Accessory Track

September 1, 2023January 22, 2026 Master Builder

Construction LEGOLAND Medium Builds Official Sets

730: Steam Shovel with Carrier

February 21, 2024February 21, 2024 Master Builder

Large Builds Official Sets Technic Technic Sets

951: Bulldozer

December 17, 2025December 17, 2025 Master Builder

Classic Town Coast Guard Medium Builds Official Sets Town Town Sets

6342: Beach Rescue Chopper

July 15, 2022July 15, 2022 Master Builder

Classic Town Official Sets Race Small Builds Town Town Sets

6669: Diesel Daredevil

March 17, 2022March 17, 2022 Master Builder

Bonus/Value Packs Imperial Guards Official Sets Pirates Pirates Alternate Builds Pirates I Small Builds

1795 – Side R

March 30, 2026March 30, 2026 Master Builder

Box Marketing Blurb Classic Town Extra Large Builds Official Sets Town Town Sets Traffic

6390: Main Street

February 10, 2023April 3, 2024 Master Builder

Large Builds LL Link Official Sets Police Town Town Jr Town Sets

6332: Command Post Central

June 4, 2024July 11, 2024 Master Builder

Classic Town Construction Medium Builds Official Sets Town Town Sets

6361: Mobile Crane

April 9, 2020April 9, 2020 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
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.