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
    • 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
Alternate Builds Large Builds Town Town Alternate Builds 

6441 – Back C

November 6, 2019November 6, 2019 Master Builder 3714 Views

From: 6441: Deep Reef Refuge
Name: TBD
Submitted by: USER
Instructions

  • Back C
  • Back C2

  • ← 6441 – Back B
  • 375-2 (6075-2): Castle →

You May Also Like

1817 – Back A

January 12, 2022January 12, 2022 Master Builder

6271 – Back C

January 6, 2022February 20, 2025 Master Builder

6273 – Back A

July 4, 2024July 6, 2024 Master Builder

6077-2 – Back B

April 19, 2021October 25, 2021 Master Builder

920 – Back C

February 2, 2021October 25, 2021 Master Builder

710 – Back C

June 24, 2025June 26, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

6080: King’s Castle
ABCs Castle Castle Sets Extra Large Builds Lion Knights Niels Milan Pedersen Official Sets 

6080: King’s Castle

October 5, 2019August 16, 2023 Master Builder

Year Released: 1984Designer: Niels Milan PedersenBricklinkInstructions *Alternate Build Connection: 1987 Town, Castle, and Classic Space with Zack Commercial

6907: Sonic Stinger
ABCs Insectoids Insectoids Sets Official Sets Small Builds Space 

6907: Sonic Stinger

October 3, 2024March 22, 2025 Master Builder
1597: Castle 3-Pack
Bonus/Value Pack Sets Bonus/Value Packs Official Sets Small Builds 

1597: Castle 3-Pack

July 22, 2024January 20, 2026 Master Builder
6055: Prisoner Convoy
Castle Castle Sets Forestmen Lion Knights Official Sets Small Builds 

6055: Prisoner Convoy

May 20, 2021October 1, 2024 Master Builder
6399: Airport Shuttle
Airport Classic Town Different Box Versions Extra Large Builds Official Sets Town Town Sets 

6399: Airport Shuttle

February 24, 2023March 17, 2024 Master Builder
Kabaya: Alpha Team 1
Alpha Team Alpha Team Sets Mission Deep Sea Official Sets Very Small Builds 

Kabaya: Alpha Team 1

September 9, 2024September 9, 2024 Master Builder
4767: Harry and the Hungarian Horntail
Goblet of Fire Harry Potter Harry Potter Sets Large Builds Official Sets 

4767: Harry and the Hungarian Horntail

May 16, 2023May 16, 2023 Master Builder
4720: Knockturn Alley
Chamber of Secrets Harry Potter Harry Potter Sets Medium Builds Official Sets 

4720: Knockturn Alley

July 9, 2024July 9, 2024 Master Builder
6530: Sport Coupe (City Car)
Classic Town Official Sets Town Town Sets Traffic Very Small Builds 

6530: Sport Coupe (City Car)

April 4, 2020April 19, 2021 Master Builder
4726: Quidditch Practice
Chamber of Secrets Harry Potter Harry Potter Sets Medium Builds Official Sets 

4726: Quidditch Practice

February 27, 2023February 27, 2023 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
5925: Pontoon Plane
Adventurers Adventurers Sets Jungle Official Sets Small Builds 

5925: Pontoon Plane

March 5, 2026March 5, 2026 Master Builder
6390: Main Street
Box Marketing Blurb Classic Town Extra Large Builds Official Sets Town Town Sets Traffic 

6390: Main Street

February 10, 2023April 3, 2024 Master Builder
9401: M:Tron Team
Bonus/Value Pack Sets Bonus/Value Packs M:Tron M:Tron Sets Official Sets Space Very Small Builds 

9401: M:Tron Team

February 18, 2026March 7, 2026 Master Builder
6829: Radon Rover
ABCs Official Sets Small Builds Space UFO UFO Sets 

6829: Radon Rover

August 4, 2020March 22, 2025 Master Builder
7180: B-wing at Rebel Control Center
Episode IV/V/VI Large Builds Official Sets Star Wars Star Wars Sets 

7180: B-wing at Rebel Control Center

August 17, 2023April 21, 2026 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
  • 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.