Skip to content
Back of the Box Builds

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
    • Submit Instructions!
    • New Instructions
    • New Official Sets
    • New Alternate Builds
    • Minifigs
    • Very Small Builds
    • Small Builds
    • Medium Builds
    • Large Builds
    • Extra Large Builds
    • How BOTBB was Built
  • 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 7173 Views

Year Released: 1990
Bricklink
Instructions

*Alternate Build Connection: 6862: Secret Space Voyager

Back A
Back B
Back C
  • ← 6055: Prisoner Convoy
  • 6877 – Back A →

You May Also Like

4733: The Dueling Club

March 3, 2023March 3, 2023 Master Builder

6953 – Back A

May 16, 2023May 17, 2023 Master Builder

1817 – Back C

January 12, 2022January 12, 2022 Master Builder

4536: Blue Hopper Car

July 10, 2026July 10, 2026 Master Builder

1580 – Back B

July 12, 2021July 12, 2021 Master Builder

6433: Coast Watch (Coastwatch)

July 10, 2024July 10, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

4910: Hover Scout
Official Sets Rock Raiders Rock Raiders Sets Very Small Builds 

4910: Hover Scout

March 1, 2023March 1, 2023 Master Builder

Year Released: 1999BricklinkInstructions

6805: Astro Dasher
Classic Space Classic Space Sets Official Sets Space Very Small Builds 

6805: Astro Dasher

December 10, 2025December 10, 2025 Master Builder
7115: Gungan Patrol
Episode I Official Sets Small Builds Star Wars Star Wars Sets 

7115: Gungan Patrol

January 12, 2021April 22, 2026 Master Builder
6611: Fire Chief’s Car
Classic Town Fire Official Sets Town Town Sets Very Small Builds 

6611: Fire Chief’s Car

February 20, 2024February 20, 2024 Master Builder
846: Lighting Bricks
Basic Basic Alternate Builds Basic Set Classic Town Official Sets Supplemental Town 

846: Lighting Bricks

October 26, 2026October 26, 2026 Master Builder
6681: Police Van
Classic Town Official Sets Police Small Builds Town Town Sets 

6681: Police Van

October 13, 2021October 13, 2021 Master Builder
6265: Sabre Island
Imperial Soldiers Official Sets Pirates Pirates I Pirates Sets Small Builds 

6265: Sabre Island

May 28, 2024May 28, 2024 Master Builder
Space 3-Pack: Exploriens
Bonus/Value Pack Sets Bonus/Value Packs Exploriens Exploriens Sets Official Sets Small Builds Space 

Space 3-Pack: Exploriens

October 2, 2024October 3, 2024 Master Builder
6352: Cargomaster Crane
ABCs Classic Town Construction Medium Builds Official Sets Town Town Sets 

6352: Cargomaster Crane

June 4, 2023February 12, 2025 Master Builder
1723: Castle / Pirates Combi Pack
Bonus/Value Packs Castle Castle Sets Dragon Knights Imperial Guards Official Sets Pirates Pirates I Pirates Sets Small Builds 

1723: Castle / Pirates Combi Pack

March 30, 2026March 30, 2026 Master Builder
6667: Pothole Patcher
Classic Town Official Sets Small Builds Town Town Sets Traffic 

6667: Pothole Patcher

November 19, 2020November 19, 2020 Master Builder
1722: Rescue/Ice Planet Combo Pack
Bonus/Value Packs Classic Town Fire Ice Planet 2002 Ice Planet 2002 Sets Official Sets Small Builds Space Town 

1722: Rescue/Ice Planet Combo Pack

July 13, 2021April 4, 2024 Master Builder
1752: Boat with Armor
Castle Castle Sets Official Sets Royal Knights Very Small Builds 

1752: Boat with Armor

April 10, 2023April 10, 2023 Master Builder
6897: Rebel Hunter
ABCs Jørn Thomsen Medium Builds Official Sets Space Space Police II Space Police II Sets 

6897: Rebel Hunter

January 23, 2022February 11, 2025 Master Builder
6497: Twisted Time Train
Box Story Medium Builds Official Sets Time Cruisers Time Cruisers Sets 

6497: Twisted Time Train

March 17, 2025March 17, 2025 Master Builder
6363: Auto Service Station
Classic Town Medium Builds Official Sets Town Town Sets Traffic 

6363: Auto Service Station

February 17, 2023February 17, 2023 Master Builder

BOXES

INSTRUCTIONS

FAVORITES

MINIFIGS

About This Site

Logo
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.