Skip to content
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
    • Ninja
    • Pirates
    • Rock Raiders
    • Space
    • Star Wars
    • Studios
    • Technic
    • Time Cruisers
    • Town
    • Universal Building Set
    • Wild West
    • Misc
  • USEFUL LINKS
    • Contribute!
    • New Instructions
    • New Official Sets
    • New Alternate Builds
    • Minifigs
    • Very Small Builds
    • Small Builds
    • Medium Builds
    • Large Builds
    • Extra Large Builds
    • About
  • THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP

Chamber of Secrets

Alternate Builds Chamber of Secrets Harry Potter Harry Potter Alternate Builds Small Builds 

4733 – Back B

March 3, 2023March 3, 2023 Master Builder 1330 Views

From: 4733: The Dueling ClubName: TBDSubmitted by: USERInstructions:

Read more
Alternate Builds Chamber of Secrets Harry Potter Harry Potter Alternate Builds Small Builds 

4733 – Back A

March 3, 2023March 3, 2023 Master Builder 1334 Views

From: 4733: The Dueling ClubName: TBDSubmitted by: USERInstructions:

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

4733: The Dueling Club

March 3, 2023March 3, 2023 Master Builder 2605 Views

Year Released: 2002BricklinkInstructions

Read more
Alternate Builds Chamber of Secrets Harry Potter Harry Potter Alternate Builds Small Builds 

4735 – Back B

February 27, 2023February 27, 2023 Master Builder 1312 Views

From: 4735: SlytherinName: TBDSubmitted by: USERInstructions:

Read more
Alternate Builds Chamber of Secrets Harry Potter Harry Potter Alternate Builds Small Builds 

4735 – Back A

February 27, 2023February 27, 2023 Master Builder 1313 Views

From: 4735: SlytherinName: TBDSubmitted by: USERInstructions:

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

4735: Slytherin

February 27, 2023February 27, 2023 Master Builder 2551 Views

Year Released: 2002BricklinkInstructions

Read more
Alternate Builds Chamber of Secrets Harry Potter Harry Potter Alternate Builds Small Builds 

4726 – Back B

February 27, 2023February 27, 2023 Master Builder 1317 Views

From: 4726: Quidditch PracticeName: TBDSubmitted by: USERInstructions:

Read more
Alternate Builds Chamber of Secrets Harry Potter Harry Potter Alternate Builds Small Builds 

4726 – Back A

February 27, 2023February 27, 2023 Master Builder 1378 Views

From: 4726: Quidditch PracticeName: TBDSubmitted by: USERInstructions:

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

4726: Quidditch Practice

February 27, 2023February 27, 2023 Master Builder 2544 Views

Year Released: 2002BricklinkInstructions

Read more

EXPLORE MORE OFFICIAL SETS

6889: Recon Robot
Medium Builds Official Sets Space Spyrius Spyrius Sets 

6889: Recon Robot

October 24, 2019May 24, 2020 Master Builder

Year Released: 1994InstructionsBricklink

1750: Renault Formula 1 Racer
Classic Town Official Sets Race Town Town Sets Very Small Builds 

1750: Renault Formula 1 Racer

July 13, 2021July 13, 2021 Master Builder
6651: Post Office Van
Classic Town Official Sets Post Office Small Builds Town Town Sets 

6651: Post Office Van

February 3, 2021February 3, 2021 Master Builder
5830: Fun-Day Sundaes
Belville Belville Sets Lion Knights Official Sets Recreation Very Small Builds 

5830: Fun-Day Sundaes

April 19, 2021April 19, 2021 Master Builder
1843 – Side L
Castle Castle Alternate Builds Instructions Added Official Sets Royal Knights Small Alt Build Small Builds Space Spyrius Spyrius Sets Value Packs 

1843 – Side L

January 22, 2021October 25, 2021 Master Builder
6693: Recycle Truck
Classic Town Official Sets Small Builds Town Town Sets Traffic 

6693: Recycle Truck

May 10, 2022May 10, 2022 Master Builder
6988: Alpha Centauri Outpost
Blacktron II Blacktron II Sets Large Builds Official Sets 

6988: Alpha Centauri Outpost

October 24, 2019October 24, 2019 Master Builder
7133: Bounty Hunter Pursuit
Episode II Large Builds Official Sets Star Wars Star Wars Sets 

7133: Bounty Hunter Pursuit

July 14, 2021July 14, 2021 Master Builder
6633: Family Car
Classic Town Official Sets Small Builds Town Town Sets Traffic 

6633: Family Car

April 19, 2021April 19, 2021 Master Builder
6669: Diesel Daredevil
Classic Town Official Sets Race Small Builds Town Town Sets 

6669: Diesel Daredevil

March 17, 2022March 17, 2022 Master Builder
6392: Airport
Airport Classic Town Extra Large Builds Official Sets Town Town Sets 

6392: Airport

June 28, 2022June 28, 2022 Master Builder
6510: Mud Runner
Official Sets Race Town Town Sets Very Small Builds 

6510: Mud Runner

May 8, 2022May 8, 2022 Master Builder
6837: Cosmic Creeper
Insectoids Insectoids Sets Official Sets Small Builds 

6837: Cosmic Creeper

April 2, 2020April 2, 2020 Master Builder
6598: Metro PD Station
Classic Town Extra Large Builds Official Sets Police Town Town Sets 

6598: Metro PD Station

January 6, 2022January 6, 2022 Master Builder
7252: Droid Tri-Fighter
Episode III Medium Builds Official Sets Star Wars Star Wars Sets 

7252: Droid Tri-Fighter

March 3, 2023March 3, 2023 Master Builder
1657: Bird
Basic Set Duplo Duplo Sets Official Sets Very Small Builds 

1657: Bird

December 28, 2021December 29, 2021 Master Builder

BUILD!

MINIFIGS

About This Site

Logo
There were once pictures of additional builds on the back of LEGO® boxes. On the box was, "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
  • Ninja
  • Pirates
  • Rock Raiders
  • Space
  • Star Wars
  • Studio
  • Technic
  • Time Cruisers
  • Town
  • Universal Building Set
  • Wild West
  • Misc

Useful Links

  • Contribute!
  • 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)
  • About

In Honor of 1526

The classic space set that never was.

Copyright © 2023 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.