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
- Town
- Universal Building Set
- Western
- More Sets
- Misc
USEFUL LINKS
THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP

Alternate Builds Instructions Added M:Tron M:Tron Alternate Builds Medium Alt Build Medium Builds Space

6923 – Back C

October 1, 2019October 25, 2021 Master Builder 4804 Views

From: 6923: Particle Ionizer
Name: Suborbital Voyager ¹
Instructions: PDF (Photo Sequence)

Contributions

Name and PDF (Photo Sequence) submitted on September 18, 2019 by: plastic.ati

← 6923 – Back B
6881: Lunar Rocket Launcher →

You May Also Like

6469 – Back C

March 3, 2025March 3, 2025 Master Builder

6594 – Back C

February 5, 2023July 15, 2025 Master Builder

6369 – Back B

December 1, 2023December 2, 2023 Master Builder

6082 – Back C

January 13, 2022January 13, 2022 Master Builder

1966 – Back A

May 16, 2025May 16, 2025 Master Builder

6874: Moon Rover

November 6, 2023November 6, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Episode III Medium Builds Official Sets Star Wars Star Wars Sets

7256: Jedi Starfighter & Vulture Droid

March 1, 2023May 12, 2023 Master Builder

Year Released: 2005BricklinkInstructions

9V Extra Large Builds Official Sets Town Train Train Sets

4565: Freight and Crane Railway

January 5, 2026January 5, 2026 Master Builder

Aquazone Aquazone Sets Large Builds Official Sets Stingrays

6198: Stingray Stormer

October 29, 2019April 4, 2020 Master Builder

Official Sets Power Miners Power Miners Sets Small Builds

8956: Stone Chopper

March 27, 2026March 27, 2026 Master Builder

Basic Large Builds Official Sets Universal Building Set

535: Basic Building Set Tote Pack

May 15, 2023May 16, 2023 Master Builder

Official Sets Racers Radio Control Small Builds

8369: Dirt Crusher RC (Yellow)

November 13, 2024November 13, 2024 Master Builder

Castle Castle Sets Duplicate Set Number Large Builds Official Sets Wolfpack

6075-1: Wolfpack Tower

October 11, 2021March 11, 2024 Master Builder

ABCs Blacktron II Blacktron II Sets Jørn Thomsen Large Builds Official Sets Space

6981: Aerial Intruder

September 22, 2019August 15, 2023 Master Builder

Adventurers Adventurers Sets Box Story Desert Extra Large Builds Official Sets

5988: Pharaoh’s Forbidden Ruins

October 29, 2019March 7, 2025 Master Builder

Box Marketing Blurb Classic Town Large Builds Official Sets Police Town Town Sets

6386: Police Command Base

February 4, 2021April 3, 2024 Master Builder

Chamber of Secrets Extra Large Builds Harry Potter Harry Potter Sets Official Sets

4730: The Chamber of Secrets

January 23, 2024January 23, 2024 Master Builder

Large Builds Official Sets Space Unitron Unitron Sets

1793: Space Station Zenon

April 19, 2021April 19, 2021 Master Builder

Blacktron Blacktron Sets Medium Builds Official Sets

6894: Invader

November 20, 2019November 20, 2019 Master Builder

Classic Space Classic Space Sets Jens Nygaard Knudsen Medium Builds Official Sets Space

920 (483): Alpha-1 Rocket Base

February 2, 2021July 31, 2023 Master Builder

Large Builds LEGOLAND Official Sets Space

565: Moon Landing

July 11, 2024July 11, 2024 Master Builder

Classic Town Fire Medium Builds Official Sets Town Town Sets

6358: Snorkel Squad

April 15, 2021April 15, 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
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.