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 2391 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

Book 260 – Page 4-5

November 8, 2021November 11, 2021 Master Builder

6335 – Back E

December 22, 2023January 1, 2024 Master Builder

6592 – Back A

June 23, 2025June 23, 2025 Master Builder

6826 – Back A

September 26, 2019October 25, 2021 Master Builder

6479 – Back C

April 16, 2021April 16, 2021 Master Builder

6930 – Back C

November 18, 2020September 11, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Blacktron Blacktron Sets Medium Builds Official Sets

6894: Invader

November 20, 2019November 20, 2019 Master Builder

Year Released: 1987Bricklink

9V Extra Large Builds Official Sets Town Train Train Sets

4563: Load N’ Haul Railroad

July 26, 2022July 26, 2022 Master Builder

Aquazone Aquazone Sets Box Story Hydronauts Large Builds Official Sets

6180: Hydro Search Sub

February 18, 2025February 18, 2025 Master Builder

Cowboys Official Sets Very Small Builds Western Western Sets

6790: Bandit’s Wheelgun

October 10, 2023October 10, 2023 Master Builder

Drome Racers Official Sets Racers Very Small Builds

4582: Red Bullet

October 23, 2021February 21, 2025 Master Builder

Dino Attack Official Sets Small Builds

7473: Street Sprinter vs. Mutant Lizard

March 21, 2023March 21, 2023 Master Builder

ABCs Aquanauts Aquazone Aquazone Sets Extra Large Builds Jørn Thomsen Official Sets

6195: Neptune Discovery Lab (Aqua Dome 7)

January 20, 2022February 11, 2025 Master Builder

Building Classic Town Medium Builds Official Sets Town Town Sets

6349: Vacation House

July 1, 2021July 12, 2021 Master Builder

Official Sets Pirates Pirates I Pirates Sets Very Small Builds

6232: Skeleton Crew

July 13, 2021July 13, 2021 Master Builder

ABCs Castle Castle Sets Classic Castle Daniel August Krentz Different Set Numbers Duplicate Set Number Extra Large Builds Official Sets

375-2 (6075-2): Castle

November 8, 2019September 5, 2025 Master Builder

Castle Castle Sets Lion Knights Official Sets Small Builds

6040: Blacksmith Shop

October 8, 2023October 8, 2023 Master Builder

Official Sets Small Builds Space Port Town Town Sets

6453: Com-Link Cruiser (Comlink Cruiser)

August 2, 2020July 14, 2021 Master Builder

Official Sets Race Town Town Sets Very Small Builds

6503: Sprint Racer

July 9, 2022July 9, 2022 Master Builder

Castle Castle Sets Lion Knights Medium Builds Official Sets

6061: Siege Tower

January 6, 2022January 6, 2022 Master Builder

Episode II Large Builds Official Sets Star Wars Star Wars Sets

7153: Jango Fett’s Slave I

May 10, 2022May 10, 2022 Master Builder

Airport Classic Town Medium Builds Official Sets Town Town Sets

6368: Jet Airliner

January 21, 2021January 21, 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
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.