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 4104 Views

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

← 371-3 – Top A
371-3 – Bottom A →

You May Also Like

7140 – Instructions 2

April 21, 2026April 21, 2026 Master Builder

6592: Vacation Hideaway (Weekend Cottage)

June 23, 2025June 23, 2025 Master Builder

6985 – Back B

September 28, 2019November 18, 2021 Master Builder

6898 – Back C

June 8, 2020May 17, 2023 Master Builder

5928 – Back A

February 22, 2023February 22, 2023 Master Builder

6265: Sabre Island

May 28, 2024May 28, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Town Medium Builds Official Sets Police Town Town Sets

6344: Jet Speed Justice

October 8, 2024October 8, 2024 Master Builder

Year Released: 1993BricklinkInstructions

Classic Town Harbor Official Sets Town Town Sets Very Small Builds Wrecker

1632: Motor Boat

July 25, 2024July 25, 2024 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

Island Xtreme Stunts Island Xtreme Stunts Sets Medium Builds Official Sets

6734: Beach Cruiser

April 7, 2026April 7, 2026 Master Builder

Official Sets Small Builds Studio Sets Studios

1380: Werewolf Ambush

December 16, 2025December 16, 2025 Master Builder

ABCs Blacktron Blacktron Sets Bonus/Value Pack Sets LL Link Official Sets Very Small Builds

1875: Meteor Monitor

July 14, 2021January 22, 2026 Master Builder

Alpha Team Alpha Team Sets Mission Deep Sea Official Sets Very Small Builds

Kabaya: Alpha Team 2

September 9, 2024September 9, 2024 Master Builder

ABCs Insectoids Insectoids Sets Official Sets Space Very Small Builds

6817: Beta Buzzer

June 1, 2022March 22, 2025 Master Builder

Large Builds Official Sets Technic Technic Sets

8064: Universal Motor Set 9V

February 8, 2024February 8, 2024 Master Builder

ABCs Box Story Large Builds Official Sets Robo Force Robo Force Sets Space

2154: Robo Master

June 14, 2023February 11, 2025 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

6822: Space Digger

March 12, 2024March 12, 2024 Master Builder

Adventurers Adventurers Sets Dino Island Official Sets Small Builds

5920: Island Racer

July 26, 2020July 26, 2020 Master Builder

Extreme Team Official Sets Small Builds Town Town Sets

2963: Extreme Racer

January 30, 2024January 30, 2024 Master Builder

Classic Town Construction Official Sets Town Town Sets Very Small Builds

6630: Bucket Loader

October 13, 2021October 13, 2021 Master Builder

Large Builds Model Team Model Team Sets Official Sets

5540: Formula I Racer

February 10, 2026March 4, 2026 Master Builder

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

7166: Imperial Shuttle

April 16, 2021September 4, 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.