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Back of the Box Builds

Back of the Box Builds

LEGO Alternate Builds!

  • SETS
    • Adventurers
    • Aquazone
    • 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
    • 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

Harry Potter Sets

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

4719: Quality Quidditch Supplies

March 22, 2025March 22, 2025 Master Builder 4190 Views

Year Released: 2003BricklinkInstructions

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Harry Potter Harry Potter Sets Official Sets Small Builds Sorcerer's Stone 

4702: The Final Challenge

August 8, 2024August 8, 2024 Master Builder 4517 Views

Year Released: 2001BricklinkInstructions

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Box Plus Harry Potter Harry Potter Sets Official Sets Playscape/Play Stage Box Small Builds Sorcerer's Stone 

4723: Diagon Alley Shops

July 10, 2024October 8, 2024 Master Builder 4102 Views

Year Released: 2001BricklinkInstructions NONE 🙁

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

4720: Knockturn Alley

July 9, 2024July 9, 2024 Master Builder 4147 Views

Year Released: 2003BricklinkInstructions

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Harry Potter Harry Potter Sets Medium Builds Official Sets Sorcerer's Stone 

4704: The Chamber of the Winged Keys

May 28, 2024May 28, 2024 Master Builder 4496 Views

Year Released: 2001BricklinkInstructions

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Chamber of Secrets Extra Large Builds Harry Potter Harry Potter Sets Official Sets 

4730: The Chamber of Secrets

January 23, 2024January 23, 2024 Master Builder 4285 Views

Year Released: 2002BricklinkInstructions

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

4731: Dobby’s Release

January 23, 2024January 23, 2024 Master Builder 4076 Views

Year Released: 2002BricklinkInstructions

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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 4096 Views

Year Released: 2005BricklinkInstructions

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Extra Large Builds Goblet of Fire Harry Potter Harry Potter Sets Official Sets 

4768: The Durmstrang Ship

May 16, 2023May 16, 2023 Master Builder 4664 Views

Year Released: 2005BricklinkInstructions

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Extra Large Builds Goblet of Fire Harry Potter Harry Potter Sets Official Sets 

4766: Graveyard Duel

May 16, 2023May 16, 2023 Master Builder 4031 Views

Year Released: 2005BricklinkInstructions

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Goblet of Fire Harry Potter Harry Potter Sets Medium Builds Official Sets 

4762: Rescue from the Merpeople

May 16, 2023May 16, 2023 Master Builder 4014 Views

Year Released: 2005BricklinkInstructions

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Harry Potter Harry Potter Sets Official Sets Prisoner of Azkaban Small Builds 

4751: Harry and the Marauder’s Map

May 16, 2023May 16, 2023 Master Builder 4298 Views

Year Released: 2004BricklinkInstructions

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Harry Potter Harry Potter Sets Official Sets Prisoner of Azkaban Very Small Builds 

4750: Draco’s Encounter with Buckbeak

May 16, 2023May 16, 2023 Master Builder 4033 Views

Year Released: 2004BricklinkInstructions

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

4733: The Dueling Club

March 3, 2023March 3, 2023 Master Builder 4575 Views

Year Released: 2002BricklinkInstructions

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Harry Potter Harry Potter Sets Medium Builds Official Sets Sorcerer's Stone 

4714: Gringott’s Bank

March 2, 2023March 2, 2023 Master Builder 4119 Views

Year Released: 2002BricklinkInstructions

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Harry Potter Harry Potter Sets Large Builds Official Sets Sorcerer's Stone 

4706: Forbidden Corridor

February 27, 2023February 27, 2023 Master Builder 4249 Views

Year Released: 2001BricklinkInstructions

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

4735: Slytherin

February 27, 2023February 27, 2023 Master Builder 4075 Views

Year Released: 2002BricklinkInstructions

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

4726: Quidditch Practice

February 27, 2023February 27, 2023 Master Builder 4029 Views

Year Released: 2002BricklinkInstructions

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Harry Potter Harry Potter Sets Large Builds Official Sets Sorcerer's Stone 

4707: Hagrid’s Hut

December 29, 2021December 29, 2021 Master Builder 4115 Views

Year Released: 2001BricklinkInstructions

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Harry Potter Harry Potter Sets Large Builds Official Sets Sorcerer's Stone 

4708: Hogwarts Express

July 13, 2021August 8, 2024 Master Builder 4584 Views

Year Released: 2001BricklinkInstructions

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Extra Large Builds Harry Potter Harry Potter Sets Official Sets Sorcerer's Stone 

4709: Hogwarts Castle

April 16, 2021July 13, 2021 Master Builder 4854 Views

Year Released: 2001BricklinkInstructions

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Harry Potter Harry Potter Sets Medium Builds Official Sets Sorcerer's Stone 

4705: Snape’s Class

April 16, 2021April 16, 2021 Master Builder 4383 Views

Year Released: 2001BricklinkInstructions

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EXPLORE MORE OFFICIAL SETS

4479: TIE Bomber
Episode IV/V/VI Large Builds Official Sets Star Wars Star Wars Sets 

4479: TIE Bomber

January 6, 2025January 6, 2025 Master Builder

Year Released: 2003BricklinkInstructions

7106: Droid Escape
Episode IV/V/VI Official Sets Small Builds Star Wars Star Wars Sets 

7106: Droid Escape

March 1, 2023March 1, 2023 Master Builder
894: Mobile Ground Tracking Station
Classic Space Classic Space Sets Jens Nygaard Knudsen Official Sets Small Builds Space 

894: Mobile Ground Tracking Station

January 12, 2021July 29, 2023 Master Builder
6950: Mobile Rocket Transport
Classic Space Classic Space Sets Medium Builds Niels Milan Pedersen Official Sets Space 

6950: Mobile Rocket Transport

January 12, 2021July 29, 2023 Master Builder
6125: Sea Sprint 9
Aquanauts Aquazone Aquazone Sets Jørn Thomsen Official Sets Very Small Builds 

6125: Sea Sprint 9

April 9, 2020July 29, 2023 Master Builder
6870: Space Probe Launcher
Classic Space Classic Space Sets Official Sets Small Builds Space 

6870: Space Probe Launcher

January 12, 2021January 12, 2021 Master Builder
1736 (1746 and 2891): Wizard’s Cart
Castle Castle Sets Dragon Knights Official Sets Very Small Builds 

1736 (1746 and 2891): Wizard’s Cart

September 24, 2024October 8, 2024 Master Builder
6923: Particle Ionizer
ABCs M:Tron M:Tron Sets Medium Builds Official Sets 

6923: Particle Ionizer

October 1, 2019August 13, 2023 Master Builder
6820: Starfire I
Classic Space Classic Space Sets Official Sets Space Very Small Builds 

6820: Starfire I

January 12, 2021January 12, 2021 Master Builder
6609: Race Car
Official Sets Race Town Town Sets Very Small Builds 

6609: Race Car

February 12, 2024February 12, 2024 Master Builder
6750: Sonic Robot
Classic Space Classic Space Sets Official Sets Small Builds 

6750: Sonic Robot

September 22, 2019September 28, 2019 Master Builder
6009: Black Knight
Black Knights Castle Castle Sets Official Sets Very Small Builds 

6009: Black Knight

April 9, 2020April 9, 2020 Master Builder
1628: Santa on Sleigh with Reindeer
Holiday and Event Holiday and Event Sets Official Sets Small Builds 

1628: Santa on Sleigh with Reindeer

November 25, 2020July 25, 2024 Master Builder
926 (493): Space Command Center
Classic Space Classic Space Sets Jens Nygaard Knudsen Medium Builds Official Sets Space 

926 (493): Space Command Center

October 22, 2019July 31, 2023 Master Builder
6604: Formula-1 Racer
Official Sets Race Town Town Sets Very Small Builds 

6604: Formula-1 Racer

November 25, 2020November 25, 2020 Master Builder
6518: Baja Buggy
Classic Town Coast Guard Official Sets Small Builds Town Town Sets 

6518: Baja Buggy

May 23, 2022May 23, 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
  • 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 © 2025 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.