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 Extra Large Alt Build Extra Large Builds Instructions Added Model Team Model Team Alternate Builds

5581 – Back A

January 31, 2026March 4, 2026 Master Builder 4628 Views

From: 5581: Magic Flash
Name: TBD ¹
Instructions: View PDF | Download .io File

Contributions

Name, PDF and .io file submitted on January 29, 2026 by: livi

← 5521 – Back A
5550: Custom Rally Van →

You May Also Like

6021 – Back B

September 25, 2024September 25, 2024 Master Builder

6818 – Back B

August 4, 2023August 6, 2023 Master Builder

1912 (Set A, 1) – Back D

April 1, 2025April 1, 2025 Master Builder

6970 – Back A

January 20, 2021January 20, 2021 Master Builder

6377 – Inside B

May 22, 2026May 22, 2026 Master Builder

6055 – Back C

August 7, 2024October 1, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

ABCs Castle Castle Sets Extra Large Builds Lion Knights Niels Milan Pedersen Official Sets

6080: King’s Castle

October 5, 2019August 16, 2023 Master Builder

Year Released: 1984Designer: Niels Milan PedersenBricklinkInstructions *Alternate Build Connection: 1987 Town, Castle, and Classic Space with Zack Commercial

Official Sets Racers Radio Control Small Builds

8675: Outdoor Challenger

July 15, 2024July 15, 2024 Master Builder

Castle Castle Sets Lion Knights Medium Builds Official Sets

6041: Armor Shop

September 25, 2024September 25, 2024 Master Builder

Classic Town Hospital Large Builds Official Sets Town Town Sets

6380: Emergency Treatment Center (St. Mary’s Hospital)

July 15, 2022July 15, 2022 Master Builder

Life on Mars Life on Mars Sets Official Sets Very Small Builds

7302 (1416, Kabaya: Life On Mars 2): Worker Robot

February 25, 2025February 25, 2025 Master Builder

Island Xtreme Stunts Island Xtreme Stunts Sets Medium Builds Official Sets

6735: Air Chase

April 7, 2026April 7, 2026 Master Builder

Classic Town Medium Builds Official Sets Town Town Sets Traffic

379: Bus Station

April 10, 2021May 31, 2023 Master Builder

Large Builds Official Sets Technic Technic Sets

8064: Universal Motor Set 9V

February 8, 2024February 8, 2024 Master Builder

Official Sets Race Town Town Sets Very Small Builds

6604: Formula-1 Racer

November 25, 2020November 25, 2020 Master Builder

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

4708: Hogwarts Express

July 13, 2021August 8, 2024 Master Builder

9V Extra Large Builds Official Sets Town Train Train Sets

4561: Railway Express with Transformer and Speed Regulator

January 5, 2026January 5, 2026 Master Builder

Castle Castle Sets Dragon Knights Official Sets Small Builds

6056: Dragon Wagon

December 28, 2021June 30, 2022 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets

6951: Robot Command Center

September 21, 2019September 28, 2019 Master Builder

Launch Command Official Sets Recreation Town Town Sets Very Small Builds

6516: Moon Walker

April 9, 2020April 9, 2020 Master Builder

Medium Builds Official Sets Super Model Technic Technic Alternate Builds Technic Sets

120270: The Great Technic Racer

March 8, 2025March 8, 2025 Master Builder

Bonus/Value Pack Sets Bonus/Value Packs Exploriens Exploriens Sets Official Sets Small Builds Space UFO UFO Sets

UFO Value Pack (VP-5)

December 10, 2025March 14, 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
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.