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

Airport Alternate Builds LEGOLAND LEGOLAND Alternate Builds Small Builds

371-3 – Top B

October 8, 2024October 8, 2024 Master Builder 4403 Views

From: 371: Seaplane
Name: TBD
Submitted by: USER
Instructions

← 371-3 – Top A
371-3 – Bottom A →

You May Also Like

6661: TV Van (Mobile TV Studio)

February 3, 2022February 3, 2022 Master Builder

6769 – Back C

November 10, 2019November 10, 2019 Master Builder

6783 – Back B

May 8, 2022May 8, 2022 Master Builder

6020 – Back B

February 9, 2022June 29, 2022 Master Builder

6662 – Back C

July 8, 2022July 13, 2022 Master Builder

6542 – Back C

November 20, 2023November 29, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Ice Planet 2002 Ice Planet 2002 Sets Jørn Thomsen Official Sets Space Very Small Builds

6814: Ice Tunnelator

April 6, 2020April 2, 2025 Master Builder

Year Released: 1993Designer: Jørn ThomsenBricklinkInstructions (A version of these instructions has an Ice Galaxy 2002 logo)

Episode I Official Sets Small Builds Star Wars Star Wars Sets

7101: Lightsaber Duel

October 28, 2021October 28, 2021 Master Builder

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

7119: Twin-Pod Cloud Car

February 26, 2023February 26, 2023 Master Builder

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

4719: Quality Quidditch Supplies

March 22, 2025March 22, 2025 Master Builder

Bonus/Value Pack Sets Castle Castle Sets Official Sets Royal Knights Small Builds

1843-3: {Royal Knights Unknown}

September 8, 2023September 13, 2023 Master Builder

Medium Builds Official Sets Studio Sets Studios

1381: Vampire’s Crypt

July 2, 2024July 2, 2024 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6821: Shovel Buggy (Geological Inspection)

February 17, 2026February 17, 2026 Master Builder

Classic Town Official Sets Recreation Town Town Sets Very Small Builds

6534: Beach Bandit

July 8, 2022July 8, 2022 Master Builder

Medium Builds Official Sets Pirates Pirates I Pirates Sets

6250: Cross Bone Clipper

February 20, 2025February 20, 2025 Master Builder

Large Builds Launch Command Official Sets Town Town Sets

6544: Shuttle Transcon 2

July 20, 2022July 20, 2022 Master Builder

Duplo Duplo Sets Official Sets Playhouse Small Builds

2788: Katie’s Kitchen

July 10, 2024July 10, 2024 Master Builder

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

4767: Harry and the Hungarian Horntail

May 16, 2023May 16, 2023 Master Builder

Official Sets Small Builds Town Town Sets

1496: Rally Car

October 20, 2019October 8, 2024 Master Builder

Black Falcons Castle Castle Sets Official Sets Small Builds

6030: Catapult

April 2, 2022April 2, 2022 Master Builder

Large Builds LEGOLAND Official Sets Space

565: Moon Landing

July 11, 2024July 11, 2024 Master Builder

Duplo Duplo Sets Official Sets Playhouse Small Builds

2551: Grandma’s Kitchen

February 27, 2023February 27, 2023 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.