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
- Train
- 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 Alt Build Small Builds

4719 – Back A

June 14, 2026June 23, 2026 Master Builder 4021 Views

From: 4719: Quality Quidditch Supplies
Name: Boathouse ¹
Instructions: View PDF | Download .io File

Contributions

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

← 6561 – Back A
6036 – Back A →

You May Also Like

720 – Back E

February 8, 2024February 9, 2024 Master Builder

6262 – Back B

July 8, 2022July 12, 2022 Master Builder

6842 – Back A

October 21, 2019October 25, 2021 Master Builder

381 – Back B

July 27, 2023July 27, 2023 Master Builder

6755 – Back B

June 30, 2024July 4, 2024 Master Builder

6265 – Back D

May 28, 2024May 30, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

Extra Large Builds Official Sets Studio Sets Studios

1382: Scary Laboratory

August 10, 2026August 10, 2026 Master Builder

Year Released: 2002BricklinkInstructions

Episode IV/V/VI Official Sets Small Builds Star Wars Star Wars Sets

7110: Landspeeder

June 21, 2022March 1, 2023 Master Builder

9V Medium Builds Official Sets Train Train Sets

4536: Blue Hopper Car

July 10, 2026July 10, 2026 Master Builder

Bonus/Value Packs Castle Castle Sets Dragon Knights Imperial Guards Official Sets Pirates Pirates I Pirates Sets Small Builds

1723: Castle / Pirates Combi Pack

March 30, 2026March 30, 2026 Master Builder

Island Xtreme Stunts Island Xtreme Stunts Sets Medium Builds Official Sets

6735: Air Chase

April 7, 2026April 7, 2026 Master Builder

Box Story Duplicate Set Number Medium Builds Ninja Ninja Alternate Builds Ninja Official Sets Official Sets

6083-2: Samurai Stronghold

December 16, 2025December 16, 2025 Master Builder

ABCs Large Builds Official Sets Robo Force Robo Force Sets Space

2152: Robo Raptor

January 14, 2021March 22, 2025 Master Builder

Extreme Team Official Sets Small Builds Town Town Sets

6580: Land Jet 7

June 25, 2025June 25, 2025 Master Builder

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

4720: Knockturn Alley

July 9, 2024June 23, 2026 Master Builder

Classic Space Classic Space Sets Medium Builds Official Sets Space

6928: Uranium Search Vehicle

January 12, 2021October 21, 2024 Master Builder

9V Medium Builds Official Sets Train Train Sets

4537: Twin Tank Transport

August 10, 2026August 10, 2026 Master Builder

Bonus/Value Pack Sets Bonus/Value Packs Official Sets Small Builds

1476: 5 Set Bonus Pack

July 22, 2024October 2, 2024 Master Builder

Box Plus Extreme Team Official Sets Playscape/Play Stage Box Small Builds Town Town Sets

6589: Radical Racer {with Rocky Ridge Playscape}

February 27, 2023October 8, 2024 Master Builder

Basic Large Builds Official Sets Universal Building Set

710: Universal Building Set

February 22, 2024February 22, 2024 Master Builder

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

924 (487): Space Cruiser

January 25, 2022October 17, 2024 Master Builder

9V Extra Large Builds Official Sets Town Train Train Sets

4554: Metro Station

August 10, 2026August 10, 2026 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
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.