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 Castle Castle Sets Extra Large Builds Lion Knights Niels Milan Pedersen Official Sets 

6080: King’s Castle

October 5, 2019August 16, 2023 Master Builder 11937 Views

Year Released: 1984
Designer: Niels Milan Pedersen
Bricklink
Instructions

*Alternate Build Connection: 1987 Town, Castle, and Classic Space with Zack Commercial

Back A
Back B
Back C
Inside A
  • ← 6018 – Back C
  • 6080 – Back B →

You May Also Like

4565: Freight and Crane Railway

January 5, 2026January 5, 2026 Master Builder

7704: Sonic Phantom

April 28, 2023April 28, 2023 Master Builder

6901 – Back B

August 25, 2023June 23, 2025 Master Builder

6598 – Back A

January 6, 2022January 6, 2022 Master Builder

6524: Blizzard Blazer

June 28, 2022June 28, 2022 Master Builder

Space Mother Ship

February 24, 2025August 29, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

6543: Sail N’ Fly Marina
Classic Town Extra Large Builds Harbor Official Sets Town Town Sets Wrecker 

6543: Sail N’ Fly Marina

July 22, 2022July 22, 2022 Master Builder

Year Released: 1994BricklinkInstructions

6376: Breezeway Cafe
Classic Town Food and Drink Medium Builds Official Sets Town Town Sets 

6376: Breezeway Cafe

February 3, 2021February 3, 2021 Master Builder
6645: Street Sweeper
Classic Town Official Sets Small Builds Town Town Sets Traffic 

6645: Street Sweeper

November 20, 2020November 20, 2020 Master Builder
6010: Supply Wagon
Castle Castle Sets Lion Knights Official Sets Small Builds 

6010: Supply Wagon

July 13, 2021July 13, 2021 Master Builder
6150 (6159): Crystal Detector
ABCs Aquazone Aquazone Sets Hydronauts Official Sets Small Builds 

6150 (6159): Crystal Detector

February 23, 2023February 18, 2025 Master Builder
3442: Legoland California Truck Limited Edition
Classic Town Official Sets Small Builds Town Town Sets Traffic 

3442: Legoland California Truck Limited Edition

October 13, 2021October 13, 2021 Master Builder
6209: Slave I (2nd edition)
Episode IV/V/VI Extra Large Builds Official Sets Star Wars Star Wars Sets 

6209: Slave I (2nd edition)

February 1, 2024February 1, 2024 Master Builder
6380: Emergency Treatment Center (St. Mary’s Hospital)
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
6049: Viking Voyager
Castle Castle Sets Lion Knights Official Sets Small Builds 

6049: Viking Voyager

June 30, 2022June 30, 2022 Master Builder
6663: Wave Rebel
Classic Town Harbor Official Sets Small Builds Town Town Sets Wrecker 

6663: Wave Rebel

June 6, 2022June 6, 2022 Master Builder
4720: Knockturn Alley
Chamber of Secrets Harry Potter Harry Potter Sets Medium Builds Official Sets 

4720: Knockturn Alley

July 9, 2024June 23, 2026 Master Builder
6232: Skeleton Crew
Official Sets Pirates Pirates I Pirates Sets Very Small Builds 

6232: Skeleton Crew

July 13, 2021July 13, 2021 Master Builder
6664: Chopper Cops
Classic Town Official Sets Police Small Builds Town Town Sets 

6664: Chopper Cops

May 3, 2020May 3, 2020 Master Builder
6781: SP-Striker
Bjarne Tveskov Large Builds Official Sets Space Space Police I Space Police I Sets 

6781: SP-Striker

April 19, 2021July 29, 2023 Master Builder
1620: Astro Dart
Bjarne Tveskov Bonus/Value Pack Sets Futron Sets Futuron Official Sets Space Very Small Builds 

1620: Astro Dart

September 6, 2023September 7, 2023 Master Builder
6027: Bat Lord’s Catapult
Castle Castle Sets Fright Knights Official Sets Small Builds 

6027: Bat Lord’s Catapult

January 28, 2022January 28, 2022 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.