Skip to content

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
THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP

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

4735 – Back A

June 12, 2024June 17, 2024 Master Builder 3449 Views

From: 4735: Slytherin
Name: Slytherin Secrets ¹
Instructions: View PDF | Download .io File

Contributions

Name, PDF and .io file submitted on June 12, 2024 by: penumbra12

← 4709 – Back C
4735 – Back B →

You May Also Like

7140 – Back A

November 10, 2019November 10, 2019 Master Builder

6909: Sonic Stinger with Promotional Mask

October 4, 2024March 22, 2025 Master Builder

6750 – Back A

July 9, 2022May 17, 2023 Master Builder

6825: Cosmic Comet

September 12, 2019March 18, 2024 Master Builder

6854: Alien Fossilizer

July 15, 2022March 22, 2025 Master Builder

1526 – Back A

April 4, 2020March 14, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

Episode II Medium Builds Official Sets Star Wars Star Wars Sets

7143: Jedi Starfighter

December 29, 2021December 29, 2021 Master Builder

Year Released: 2002BricklinkInstructions

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

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6802: Space Probe

October 10, 2022October 10, 2022 Master Builder

Box Story Fabuland Fabuland Sets Official Sets Small Builds

3676: Catherine Cat’s Fun Park

March 1, 2025March 1, 2025 Master Builder

ABCs Classic Space Classic Space Sets Different Box Versions Different Set Numbers Jens Nygaard Knudsen Large Builds LL Link Official Sets Space

928 (497): Galaxy Explorer

November 24, 2020August 15, 2024 Master Builder

Cargo Classic Town Medium Builds Official Sets Town Town Sets

6367: Truck

February 17, 2023February 17, 2023 Master Builder

Classic Town Official Sets Supplemental Town

6310: T-Road Plates

October 10, 2022May 5, 2025 Master Builder

Classic Town Extra Large Builds Gas Station Official Sets Town Town Sets Wrecker

6397: Gas N’ Wash Express

July 14, 2021July 14, 2021 Master Builder

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

Extreme Team Official Sets Small Builds Town Town Sets

2963: Extreme Racer

January 30, 2024January 30, 2024 Master Builder

Episode III Official Sets Small Builds Star Wars Star Wars Sets

7255: General Grievous Chase

March 2, 2023March 2, 2023 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6633: Family Car

April 19, 2021April 19, 2021 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

1580: Lunar Scout

July 12, 2021July 12, 2021 Master Builder

Castle Castle Sets Lion Knights Medium Builds Official Sets

6041: Armor Shop

September 25, 2024September 25, 2024 Master Builder

Imperial Soldiers Niels Milan Pedersen Official Sets Pirates Pirates I Pirates Sets Very Small Builds

6245: Harbor Sentry

July 13, 2021July 29, 2023 Master Builder

ABCs Aquazone Aquazone Sets Hydronauts Official Sets Small Builds

6150 (6159): Crystal Detector

February 23, 2023February 18, 2025 Master Builder

BOXES

INSTRUCTIONS

FAVORITES

MINIFIGS

About This Site

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 © 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.