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

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 5770 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

6881 – Back B

October 2, 2019November 18, 2021 Master Builder

4768 – Back A

May 16, 2023May 16, 2023 Master Builder

6049 – Back B

June 30, 2022June 30, 2022 Master Builder

6685 – Back B

October 5, 2023October 10, 2023 Master Builder

6351 – Back E

July 14, 2021July 14, 2021 Master Builder

1968 – Back D

November 21, 2023December 2, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Exploriens Exploriens Sets Medium Builds Official Sets

6938: Scorpion Detector

March 21, 2023March 5, 2026 Master Builder

Year Released: 1996BricklinkInstructions *This set is the same as 1737: Scorpion Detector (Limited Edition)

Insectoids Insectoids Sets Large Builds Official Sets

6919: Planetary Prowler

November 9, 2019November 9, 2019 Master Builder

Extra Large Builds Jørn Thomsen Official Sets Western Western Sets

6769: Fort Legoredo

November 10, 2019July 29, 2023 Master Builder

Bonus/Value Packs Classic Town Fire Ice Planet 2002 Ice Planet 2002 Sets Official Sets Small Builds Space Town

1722: Rescue/Ice Planet Combo Pack

July 13, 2021April 4, 2024 Master Builder

Bonus/Value Pack Sets Classic Town Fire Ice Planet 2002 Ice Planet 2002 Sets Official Sets Small Builds Space Town

1704: {Unknown – Ice Planet Satellite Plow ?}

September 6, 2023September 7, 2023 Master Builder

Adventurers Adventurers Sets Dino Island Medium Builds Official Sets

5935: Island Hopper

April 21, 2025April 21, 2025 Master Builder

Episode IV/V/VI Large Builds Official Sets Star Wars Star Wars Sets

6206: TIE Interceptor

February 1, 2024February 1, 2024 Master Builder

Classic Town Large Builds Official Sets Police Town Town Sets

6348: Surveillance Squad

June 23, 2026June 23, 2026 Master Builder

Classic Town Construction Medium Builds Official Sets Town Town Sets

6581: Dig N’ Dump

November 7, 2022November 7, 2022 Master Builder

Official Sets Small Builds Space Port Town Town Sets

6465: Space Port Jet

March 3, 2025March 3, 2025 Master Builder

Episode I Official Sets Small Builds Star Wars Star Wars Sets

7115: Gungan Patrol

January 12, 2021April 22, 2026 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

6880: Surface Explorer

May 4, 2020May 4, 2020 Master Builder

Official Sets Space UFO UFO Sets Very Small Builds

6800 (6816, Kabaya: Space 2): Cyber Blaster

October 4, 2024February 25, 2025 Master Builder

Classic Town Medium Builds Official Sets Town Town Sets Traffic

6373: Motorcycle Shop

January 6, 2022January 6, 2022 Master Builder

Futron Sets Futuron Official Sets Small Builds Space

6828: Twin-Winged Spoiler

November 20, 2019May 25, 2020 Master Builder

Batman I BATMAN™ BATMAN™ Sets Medium Builds Official Sets

7780: The Batboat: Hunt for Killer Croc

March 27, 2026March 27, 2026 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.