Skip to content

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
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 Medium Alt Build Medium Builds

4720 – Back A

June 14, 2026June 23, 2026 Master Builder 3672 Views

From: 4720: Knockturn Alley
Name: Docks ¹
Instructions: View PDF | Download .io File

Contributions

Name, PDF and .io file submitted on June 14, 2026 by: penumbra12

← 6036 – Back A
4720 – Back B →

You May Also Like

7261 – Back B

March 1, 2023March 3, 2023 Master Builder

375-1 – Back F

September 11, 2023September 11, 2023 Master Builder

6552 – Back A

May 7, 2024May 11, 2024 Master Builder

6897 – Back C

May 18, 2022May 23, 2022 Master Builder

6808 – Back B

January 21, 2021May 18, 2023 Master Builder

6970 – Inside B

June 6, 2022June 6, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Castle Castle Sets Official Sets Royal Knights Small Builds

6036: Skeleton Surprise

February 28, 2023February 28, 2023 Master Builder

Year Released: 1995BricklinkInstructions

Medium Builds Official Sets Studio Sets Studios

1381: Vampire’s Crypt

July 2, 2024July 2, 2024 Master Builder

Official Sets Rock Raiders Rock Raiders Sets Very Small Builds

4920: Rapid Rider

March 1, 2023March 1, 2023 Master Builder

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

6394: Metro Park & Service Tower

February 17, 2023February 17, 2023 Master Builder

Fabuland Fabuland Sets Official Sets Very Small Builds

3721: Clive Crocodile on Skateboard

February 26, 2023August 1, 2023 Master Builder

Indians Official Sets Very Small Builds Western Western Sets

2846: Indian Kayak

October 10, 2023October 10, 2023 Master Builder

Official Sets Pirates Pirates I Pirates Sets Very Small Builds

1747: Treasure Cave

May 6, 2022May 6, 2022 Master Builder

ABCs Classic Space Classic Space Sets Official Sets Small Builds Space

6847: Space Dozer

January 29, 2025April 10, 2025 Master Builder

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

4735: Slytherin

February 27, 2023February 27, 2023 Master Builder

Indians Jørn Thomsen Medium Builds Official Sets Western Western Sets

6746: Chief’s Tepee

February 27, 2023July 29, 2023 Master Builder

Box Story Islanders Medium Builds Official Sets Pirates Pirates I Pirates Sets

6278: Enchanted Island

February 20, 2025February 20, 2025 Master Builder

Classic Town Medium Builds Official Sets Race Town Town Sets

6334: Wave Jump Racers

June 27, 2022June 27, 2022 Master Builder

M:Tron M:Tron Sets Official Sets Space Very Small Builds

6811: Pulsar Charger

April 17, 2020April 17, 2020 Master Builder

Black Knights Castle Castle Sets Medium Builds Official Sets

6057: Sea Serpent

April 14, 2025April 14, 2025 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds

6750: Sonic Robot

September 22, 2019September 28, 2019 Master Builder

Aquashark Aquazone Aquazone Sets Large Builds Official Sets

6190: Shark’s Crystal Cave

July 13, 2021January 20, 2022 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
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.