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 4057 Views

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

← 371-3 – Top A
371-3 – Bottom A →

You May Also Like

6060 – Back A

July 30, 2024August 1, 2024 Master Builder

894 – Back E

January 12, 2021May 18, 2023 Master Builder

7250 – Back B

June 6, 2025June 7, 2025 Master Builder

6067 – Back A

February 9, 2021July 12, 2023 Master Builder

6563 – Back E

July 20, 2022July 20, 2022 Master Builder

6378 – Back B

February 26, 2023February 26, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

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

7146: TIE Fighter

February 19, 2025February 19, 2025 Master Builder

Year Released: 2001BricklinkInstructions

Building Classic Town Large Builds Official Sets Town Town Sets

6388: Holiday Home with Caravan

July 1, 2022July 1, 2022 Master Builder

Bonus/Value Pack Sets Classic Town Official Sets Small Builds Town Town Sets Traffic

1876: Soil Scooper

October 11, 2021September 7, 2023 Master Builder

Extra Large Builds Model Team Model Team Sets Official Sets

5550: Custom Rally Van

February 9, 2026March 4, 2026 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

Aquazone Aquazone Sets Large Builds Official Sets Stingrays

6160: Sea Scorpion

October 29, 2019April 4, 2020 Master Builder

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

4726: Quidditch Practice

February 27, 2023February 27, 2023 Master Builder

Bonus/Value Pack Alternate Builds Bonus/Value Pack Sets Bonus/Value Packs Medium Builds Official Sets Space Port Town Town Sets

6469: Spaceport Bonus Pack

March 3, 2025March 3, 2025 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

1498: Spy-Bot

March 11, 2024March 11, 2024 Master Builder

Classic Town Fire Medium Builds Official Sets Town Town Sets

6593: Blaze Battler

November 19, 2020November 19, 2020 Master Builder

Blacktron II Blacktron II Sets Large Builds Official Sets

6988: Alpha Centauri Outpost

October 24, 2019October 24, 2019 Master Builder

Building LEGOLAND Medium Builds Official Sets

550-2: Windmill

March 3, 2026March 3, 2026 Master Builder

Classic Space Classic Space Sets Medium Builds Official Sets Space

6901: Mobile Lab

September 11, 2020August 4, 2023 Master Builder

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

4705: Snape’s Class

April 16, 2021April 16, 2021 Master Builder

Classic Town Fire Official Sets Town Town Sets Very Small Builds

6611: Fire Chief’s Car

February 20, 2024February 20, 2024 Master Builder

Classic Town Food and Drink Medium Builds Official Sets Town Town Sets

6350: Pizza To Go

April 9, 2020February 3, 2021 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.