Skip to content

Back of the Box Builds

LEGO Alternate Builds!

SETS
- Adventurers
- Aquazone
- 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
THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP

Airport Alternate Builds LEGOLAND LEGOLAND Alternate Builds Small Builds

371-3 – Back A

October 8, 2024October 8, 2024 Master Builder 3272 Views

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

← 371-3: Seaplane
371-3 – Top A →

You May Also Like

6755 – Back A

August 31, 2024September 6, 2024 Master Builder

7119: Twin-Pod Cloud Car

February 26, 2023February 26, 2023 Master Builder

6431 – Back A

January 20, 2022January 20, 2022 Master Builder

6289 – Inside A

July 13, 2021July 13, 2021 Master Builder

Book 200 – Page 46-47

January 20, 2023January 20, 2023 Master Builder

371-3 – Bottom A

October 8, 2024October 8, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

Drome Racers Official Sets Racers Small Builds

4593: Zero Hurricane & Red Blizzard

January 27, 2025February 21, 2025 Master Builder

Year Released: 2002BricklinkInstructions

Extra Large Builds Official Sets Technic Technic Sets

8860: Car Chassis (Auto Chassis)

January 2, 2024January 2, 2024 Master Builder

Classic Town Medium Builds Official Sets Town Town Sets Traffic

6369: Garage

December 1, 2023December 2, 2023 Master Builder

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

4704: The Chamber of the Winged Keys

May 28, 2024May 28, 2024 Master Builder

ABCs Aquazone Aquazone Sets Hydronauts Official Sets Small Builds

6150 (6159): Crystal Detector

February 23, 2023February 18, 2025 Master Builder

Blacktron II Blacktron II Sets Jørn Thomsen Medium Builds Official Sets Space

6933: Spectral Starguider

April 13, 2020February 11, 2025 Master Builder

Official Sets Small Builds Town Town Sets

1665: Duel FX Racers

April 30, 2024April 30, 2024 Master Builder

Bonus/Value Packs Futron Sets Futuron Official Sets Small Builds Space

1616: Space Combi-Pack

September 6, 2023September 6, 2023 Master Builder

Belville Belville Sets Lion Knights Official Sets Playhouse Very Small Builds

5810: Vanity Fun

April 10, 2021April 10, 2021 Master Builder

Classic Town Official Sets Police Small Builds Town Town Sets

6664: Chopper Cops

May 3, 2020May 3, 2020 Master Builder

Classic Space Classic Space Sets Official Sets Very Small Builds

6809: XT-5 and Droid

April 4, 2020April 4, 2020 Master Builder

Insectoids Insectoids Sets Large Builds Official Sets

6919: Planetary Prowler

November 9, 2019November 9, 2019 Master Builder

Box Marketing Blurb Classic Town Extra Large Builds Official Sets Town Town Sets Traffic

6390: Main Street

February 10, 2023April 3, 2024 Master Builder

Classic Town Official Sets Race Town Town Sets Very Small Builds

1760: Go-Cart

April 11, 2023April 11, 2023 Master Builder

Blacktron Blacktron Sets Large Builds Official Sets

6941: Battrax

September 13, 2019September 28, 2019 Master Builder

Episode I Extra Large Builds Official Sets Star Wars Star Wars Sets Star Wars Technic Technic

8002: Destroyer Droid

August 17, 2023September 1, 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
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.