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 Instructions Added M:Tron M:Tron Alternate Builds Small Alt Build Small Builds Space

6877 – Back B

June 7, 2021January 6, 2025 Master Builder 4911 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

Book 6000 – Page 60-61

January 15, 2022February 5, 2026 Master Builder

6391 – Back E

March 13, 2024March 13, 2024 Master Builder

6278 – Back C

February 20, 2025February 20, 2025 Master Builder

6848 – Back D

March 11, 2024March 11, 2024 Master Builder

6831 – Back C

May 3, 2020November 18, 2021 Master Builder

6543 – Back C

July 22, 2022July 22, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Chamber of Secrets Harry Potter Harry Potter Sets Medium Builds Official Sets

4726: Quidditch Practice

February 27, 2023February 27, 2023 Master Builder

Year Released: 2002BricklinkInstructions

Medium Builds Official Sets Technic Technic Sets

8812: Aero Hawk II

January 22, 2026January 22, 2026 Master Builder

Box Story Large Builds Official Sets Pirates Pirates I Pirates Sets

6273: Rock Island Refuge

July 4, 2024July 4, 2024 Master Builder

Castle Castle Sets Lion Knights Medium Builds Official Sets

6041: Armor Shop

September 25, 2024September 25, 2024 Master Builder

Official Sets Pirates Pirates I Pirates Sets Very Small Builds

1747: Treasure Cave

May 6, 2022May 6, 2022 Master Builder

Airport Bonus/Value Pack Sets Classic Town Official Sets Small Builds Town

1974-2: Flyercracker USA

September 7, 2023September 8, 2023 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Wrecker

6670: Rescue Rig

November 19, 2020November 19, 2020 Master Builder

Medium Builds Official Sets Robo Force Robo Force Alternate Builds Robo Force Sets Space

2151: Robo Raider

January 14, 2021September 3, 2025 Master Builder

Batman I BATMAN™ BATMAN™ Sets Official Sets Small Builds

7779: The Batman Dragster: Catwoman Pursuit

March 27, 2026June 23, 2026 Master Builder

Classic Town Official Sets Police Town Town Sets Very Small Builds

6623: Police Car

October 13, 2021October 13, 2021 Master Builder

Box Plus Different Box Versions Official Sets Playscape/Play Stage Box Small Builds Time Cruisers Time Cruisers Sets

6499: Time Tunnelator with Time Machine

March 5, 2026March 5, 2026 Master Builder

Box Story Large Builds Official Sets Pirates Pirates I Pirates Sets

6279: Skull Island

February 21, 2025February 21, 2025 Master Builder

Classic Town Medium Builds Official Sets Town Town Sets Traffic

6373: Motorcycle Shop

January 6, 2022January 6, 2022 Master Builder

Official Sets Small Builds Space Port Town Town Sets

6453: Com-Link Cruiser (Comlink Cruiser)

August 2, 2020July 14, 2021 Master Builder

Castle Castle Sets Knights Kingdom I Official Sets Small Builds

4818: Dragon Rider

October 8, 2024October 8, 2024 Master Builder

Exo-Force Medium Builds Official Sets

7704: Sonic Phantom

April 28, 2023April 28, 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.