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

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

6923 – Back A

October 1, 2019October 25, 2021 Master Builder 4107 Views

From: 6923: Particle Ionizer
Name: Quasar-class Interplanetary Carrier ¹
Instructions: PDF (Photo Sequence)

Contributions

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

← 6923: Particle Ionizer
6923 – Back B →

You May Also Like

6950: Mobile Rocket Transport

January 12, 2021July 29, 2023 Master Builder

6256 – Back B

June 6, 2022June 6, 2022 Master Builder

1817 – Back A

January 12, 2022January 12, 2022 Master Builder

6764 – Back C

September 1, 2024September 1, 2024 Master Builder

6541 – Back E

January 9, 2023January 10, 2023 Master Builder

6667 – Back C

February 17, 2022March 17, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Aquashark Aquazone Aquazone Sets Official Sets Very Small Builds

6135: Spy Shark

March 21, 2023March 21, 2023 Master Builder

Year Released: 1996BricklinkInstructions

Classic Town Official Sets Police Small Builds Town Town Sets

1895: Sky Patrol

June 1, 2022June 1, 2022 Master Builder

Alpha Team Alpha Team Sets Medium Builds Mission Deep Sea Official Sets

4793: Ogel Sub Shark

February 21, 2024February 21, 2024 Master Builder

Official Sets Small Builds Space UFO UFO Sets

6818: Cyborg Scout

July 18, 2022July 18, 2022 Master Builder

Official Sets Scala Scala Alternate Builds Scala Sets Small Builds

3152: Playroom for the Baby Thomas

July 10, 2024July 10, 2024 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Traffic

6649: Street Sweeper

July 8, 2022July 8, 2022 Master Builder

Life on Mars Life on Mars Sets Medium Builds Official Sets Space

7314: Recon-Mech RP

July 14, 2021July 14, 2021 Master Builder

ABCs Large Builds Official Sets Space UFO UFO Sets

6900: Cyber Saucer

October 2, 2024March 22, 2025 Master Builder

Basic Set Duplo Duplo Sets Official Sets Very Small Builds

1657: Bird

December 28, 2021December 29, 2021 Master Builder

Classic Town Construction Official Sets Small Builds Town Town Sets

6662: Backhoe

July 8, 2022July 8, 2022 Master Builder

Life on Mars Life on Mars Sets Official Sets Very Small Builds

7300 (1414, 7308, Kabaya: Life On Mars 1): Double Hover

February 24, 2025February 25, 2025 Master Builder

Castle Castle Sets Fright Knights Large Builds Official Sets

6087: Witch’s Magic Manor

July 8, 2022July 8, 2022 Master Builder

Castle Castle Sets Lion Knights Medium Builds Official Sets

6060: Knight’s Challenge

July 2, 2024October 1, 2024 Master Builder

Goblet of Fire Harry Potter Harry Potter Sets Medium Builds Official Sets

4762: Rescue from the Merpeople

May 16, 2023May 16, 2023 Master Builder

Airport Bonus/Value Pack Sets Classic Town Official Sets Small Builds Town

1974-2: Flyercracker USA

September 7, 2023September 8, 2023 Master Builder

Bjarne Tveskov Futron Sets Futuron Official Sets Space Very Small Builds

6830: Space Patroller

April 8, 2020July 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 © 2025 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.