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

5521 – Back A

January 29, 2026March 4, 2026 Master Builder 3909 Views

From: 5521: Sea Jet
Name: TBD ¹
Instructions: View PDF | Download .io File

Contributions

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

← Space Skeletal Horse Concept
5581 – Back A →

You May Also Like

6175 – Back C

January 20, 2022January 20, 2022 Master Builder

6375 – Back F

November 20, 2020November 20, 2020 Master Builder

6829 – Back B

April 14, 2023April 17, 2024 Master Builder

6972 – Back E

September 15, 2019November 21, 2023 Master Builder

6264 – Back D

August 31, 2022September 16, 2022 Master Builder

6898 – Back A

June 8, 2020March 14, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

Aquashark Aquazone Aquazone Sets Large Builds Official Sets

6190: Shark’s Crystal Cave

July 13, 2021January 20, 2022 Master Builder

Year Released: 1996BricklinkInstructions

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

7106: Droid Escape

March 1, 2023March 1, 2023 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets

6951: Robot Command Center

September 21, 2019September 28, 2019 Master Builder

Official Sets Space Port Town Town Sets Very Small Builds

6458: Satellite with Astronaut

December 17, 2025December 17, 2025 Master Builder

Box Story Classic Town Extra Large Builds Official Sets Police Town Town Sets

6398: Central Precinct HQ

February 19, 2025February 19, 2025 Master Builder

Large Builds Official Sets UFO UFO Sets

6915: Warp Wing Fighter

November 9, 2019November 9, 2019 Master Builder

Goblet of Fire Harry Potter Harry Potter Sets Medium Builds Official Sets

4762: Rescue from the Merpeople

May 16, 2023May 16, 2023 Master Builder

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

7134: A-wing Fighter

December 29, 2021December 29, 2021 Master Builder

Large Builds LL Link Official Sets Police Town Town Jr Town Sets

6332: Command Post Central

June 4, 2024July 11, 2024 Master Builder

Black Knights Castle Castle Sets Official Sets Small Builds

6018: Battle Dragon

October 5, 2019April 4, 2020 Master Builder

Official Sets Rock Raiders Rock Raiders Sets Very Small Builds

4910: Hover Scout

March 1, 2023March 1, 2023 Master Builder

Box Plus Different Box Versions Exploriens Exploriens Sets Medium Builds Official Sets

1737: Scorpion Detector (Limited Edition)

March 5, 2026March 5, 2026 Master Builder

Classic Town Off-Road Official Sets Town Town Sets Very Small Builds

1730: Snow Scooter

April 11, 2023April 11, 2023 Master Builder

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

6207: A-wing Fighter

February 1, 2024February 1, 2024 Master Builder

Holiday and Event Holiday and Event Sets Official Sets Very Small Builds

1626: Angel Polybag

March 4, 2023March 4, 2023 Master Builder

Black Knights Castle Castle Sets Official Sets Very Small Builds

6034: Black Monarch’s Ghost

January 16, 2022January 16, 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.