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 4776 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

6277 – Back B

January 6, 2022January 6, 2022 Master Builder

6205 – Back A

October 19, 2024October 21, 2024 Master Builder

1630 – Back A

April 8, 2025April 8, 2025 Master Builder

Book 6000 – Page 6-7

September 27, 2023April 7, 2026 Master Builder

6352 – Back A

October 5, 2023October 10, 2023 Master Builder

6740 – Back A

April 16, 2026April 16, 2026 Master Builder

EXPLORE MORE OFFICIAL SETS

ABCs Exploriens Exploriens Sets Official Sets Small Builds Space

6856: Planetary Decoder

April 16, 2021March 22, 2025 Master Builder

Year Released: 1996BricklinkInstructions *Alternate Build Connection: Space Walker

Official Sets Pirates Pirates I Pirates Sets Very Small Builds

1747: Treasure Cave

May 6, 2022May 6, 2022 Master Builder

Box Story Imperial Guards Large Builds Official Sets Pirates Pirates I Pirates Sets

6271: Imperial Flagship

January 6, 2022February 20, 2025 Master Builder

Castle Castle Sets Official Sets Very Small Builds

2586: King & Throne (Chess King)

January 29, 2021January 29, 2021 Master Builder

Box Plus Mask Medium Builds Official Sets UFO UFO Sets

6999: Cyber Saucer with Promotional Mask

December 16, 2025December 16, 2025 Master Builder

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

4733: The Dueling Club

March 3, 2023March 3, 2023 Master Builder

Classic Town Construction Medium Builds Official Sets Town Town Sets

6481: Construction Crew

April 9, 2020July 4, 2022 Master Builder

Basic Set Duplo Duplo Sets Official Sets Very Small Builds

2333: Animal

May 16, 2023May 16, 2023 Master Builder

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

4708: Hogwarts Express

July 13, 2021August 8, 2024 Master Builder

ABCs Bjarne Tveskov Extra Large Builds Futron Sets Futuron Official Sets Space

6990: Futuron Monorail Transport System

August 30, 2020February 12, 2025 Master Builder

Blacktron II Blacktron II Sets Official Sets Space Very Small Builds

1694: Galactic Scout

February 9, 2021February 9, 2021 Master Builder

Battle Vehicles BIONICLE BIONICLE Sets Extra Large Builds Official Sets

8942: Jetrax T6

March 4, 2026March 4, 2026 Master Builder

Large Builds Model Team Model Team Sets Official Sets

5540: Formula I Racer

February 10, 2026March 4, 2026 Master Builder

Classic Town Official Sets Race Small Builds Town Town Sets

6669: Diesel Daredevil

March 17, 2022March 17, 2022 Master Builder

Indians Jørn Thomsen Large Builds Official Sets Western Western Sets

6748: Boulder Cliff Canyon

April 16, 2021July 29, 2023 Master Builder

Basic Set Duplo Duplo Sets Official Sets Very Small Builds

2331: Barney The Skateboard Bear

December 29, 2021December 29, 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.