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

6673 – Back A

April 20, 2025April 21, 2025 Master Builder 3386 Views

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

Contributions

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

← Missile Cruncher
6673 – Back B →

You May Also Like

6876 – Back A

February 16, 2026March 28, 2026 Master Builder

6344 – Back B

October 8, 2024October 8, 2024 Master Builder

6805 – Back A

December 10, 2025December 10, 2025 Master Builder

6379 – Back C

August 1, 2022May 17, 2023 Master Builder

2532 – Back A

December 28, 2021December 28, 2021 Master Builder

6034 – Back A

January 16, 2022January 16, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Futuron Official Sets Space Supplemental

6921: Monorail Accessory Track

September 1, 2023January 22, 2026 Master Builder

Year Released: 1988Bricklink

Classic Space Classic Space Sets Official Sets Small Builds

6825: Cosmic Comet

September 12, 2019March 18, 2024 Master Builder

Fabuland Fabuland Sets Official Sets Very Small Builds

3721: Clive Crocodile on Skateboard

February 26, 2023August 1, 2023 Master Builder

Episode I Official Sets Small Builds Star Wars Star Wars Sets

7111: Droid Fighter

July 14, 2021July 14, 2021 Master Builder

ABCs Official Sets Small Builds Space UFO UFO Sets

6829: Radon Rover

August 4, 2020March 22, 2025 Master Builder

Classic Town Large Builds Official Sets Police Town Town Sets

6483: Coastal Patrol

December 29, 2021December 29, 2021 Master Builder

Classic Town Large Builds Official Sets Recreation Town Town Sets

6552: Rocky River Retreat

July 15, 2022July 15, 2022 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6820: Starfire I

January 12, 2021January 12, 2021 Master Builder

Box Story Large Builds Ninja Ninja Alternate Builds Ninja Official Sets Official Sets

6088: Robber’s Retreat

January 24, 2022April 3, 2024 Master Builder

Official Sets Pirates Pirates I Pirates Sets Very Small Builds

6232: Skeleton Crew

July 13, 2021July 13, 2021 Master Builder

Episode II Large Builds Official Sets Star Wars Star Wars Sets

7133: Bounty Hunter Pursuit

July 14, 2021July 14, 2021 Master Builder

Official Sets Paradisa Town Town Sets Very Small Builds

1761: Paradisa Speedboat

April 10, 2023April 10, 2023 Master Builder

Medium Builds Official Sets Time Cruisers Time Cruisers Sets

6496: Whirling Time Warper

March 18, 2025March 18, 2025 Master Builder

Official Sets Pirates Pirates I Pirates Sets Very Small Builds

6234: Renegade’s Raft

May 23, 2022May 23, 2022 Master Builder

Classic Space Classic Space Sets Different Box Versions Different Set Numbers Jens Nygaard Knudsen LL Link Medium Builds Official Sets Space

924 (487): Space Cruiser

January 25, 2022October 17, 2024 Master Builder

Classic Town Fire Official Sets Small Builds Town Town Sets

6531: Flame Chaser

November 7, 2022November 7, 2022 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.