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 Classic Town Instructions Added Small Alt Build Small Builds Town Town Alternate Builds

6673 – Back D

April 20, 2025April 21, 2025 Master Builder 2513 Views

From: 6673: Solo Trainer
Name: Boat Trainer ¹
Instructions: View PDF

Back D

Contributions

Name and PDF submitted on April 20, 2025 by: KILDET

← 6673 – Back C
5935: Island Hopper →

You May Also Like

6392 – Back E

June 28, 2022June 28, 2022 Master Builder

Kabaya: Town Space Port

February 28, 2025December 17, 2025 Master Builder

6835 – Back B

November 9, 2019December 27, 2021 Master Builder

6392 – Back C

June 28, 2022June 28, 2022 Master Builder

6404 – Top

January 6, 2025January 6, 2025 Master Builder

6043 – Back A

November 20, 2023November 21, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Exploriens Exploriens Sets Medium Builds Official Sets

6938: Scorpion Detector

March 21, 2023March 5, 2026 Master Builder

Year Released: 1996BricklinkInstructions *This set is the same as 1737: Scorpion Detector (Limited Edition)

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

4768: The Durmstrang Ship

May 16, 2023May 16, 2023 Master Builder

Fire Official Sets Small Builds Town Town Sets World City

7043: Firefighter

January 22, 2024January 22, 2024 Master Builder

Castle Castle Sets Forestmen Large Builds Official Sets

6077-2: Forestmen’s River Fortress

April 19, 2021February 2, 2022 Master Builder

Extra Large Builds Imperial Guards Official Sets Pirates Pirates I Pirates Sets

6277: Imperial Trading Post

January 6, 2022January 6, 2022 Master Builder

Classic Town Official Sets Recreation Small Builds Town Town Sets

6665: River Runners

June 1, 2022June 1, 2022 Master Builder

Divers Large Builds Official Sets Town Town Sets

6441: Deep Reef Refuge

November 6, 2019December 29, 2021 Master Builder

Castle Castle Sets Official Sets Small Builds Wolfpack

6038: Wolfpack Renegades

October 14, 2021October 14, 2021 Master Builder

ABCs Classic Space Classic Space Sets Extra Large Builds Official Sets

6985: Cosmic Fleet Voyager

September 12, 2019August 16, 2023 Master Builder

Ice Planet 2002 Ice Planet 2002 Sets Official Sets Small Builds Space

6834: Celestial Sled

February 9, 2021February 9, 2021 Master Builder

Official Sets Race Town Town Sets Very Small Builds

6528: Sand Storm Racer

July 8, 2022July 8, 2022 Master Builder

Classic Space Classic Space Sets Official Sets Space Supplemental

305: Two Crater Plates

March 6, 2026March 6, 2026 Master Builder

Aquazone Aquazone Sets Hydronauts Official Sets Small Builds

6110: Solo Sub

February 13, 2025February 13, 2025 Master Builder

Divers Medium Builds Official Sets Town Town Sets

6557: Treasure Hunters

December 29, 2021June 28, 2022 Master Builder

Designer Sets Designer Sets Alternate Builds Designer Sets Set Medium Builds Official Sets

4883: Gear Grinders

August 2, 2021August 2, 2021 Master Builder

Black Falcons Castle Castle Sets Daniel August Krentz Large Builds Official Sets

6073: Knight’s Castle

October 23, 2019July 29, 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.