Skip to content
Back of the Box Builds

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
    • Submit Instructions!
    • New Instructions
    • New Official Sets
    • New Alternate Builds
    • Minifigs
    • Very Small Builds
    • Small Builds
    • Medium Builds
    • Large Builds
    • Extra Large Builds
    • How BOTBB was Built
  • THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP
Alternate Builds Instructions Added Medium Alt Build Medium Builds Space UFO UFO Alternate Builds 

6900 – Back A

June 15, 2026June 23, 2026 Master Builder 4813 Views

From: 6900: Cyber Saucer
Name: Cyber Disruptor 1
Instructions: View PDF ( Photo Sequence) | View PDF 2 | Download .io File

Contributions

  1. Name and PDF submitted on April 17, 2025 by: Jade
  2. Improved PDF and .io file submitted on June 15, 2026 by: MrGrumpy1834
  • ← 4720 – Back B
  • 7779 – Instructions A →

You May Also Like

6376 – Back A

February 3, 2021February 3, 2021 Master Builder

2532 – Back A

December 28, 2021December 28, 2021 Master Builder

1195 – Back A

August 5, 2023August 5, 2023 Master Builder

6416 – Back C

June 28, 2022June 28, 2022 Master Builder

6546 – Back A

May 23, 2022May 23, 2022 Master Builder

6878 – Back A

October 4, 2019July 31, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

6661: TV Van (Mobile TV Studio)
Classic Town Official Sets Small Builds Town Town Sets Traffic 

6661: TV Van (Mobile TV Studio)

February 3, 2022February 3, 2022 Master Builder

Year Released: 1991BricklinkInstructions

6086: Black Knight’s Castle
Black Knights Castle Castle Sets Extra Large Builds Niels Milan Pedersen Official Sets 

6086: Black Knight’s Castle

October 11, 2021July 29, 2023 Master Builder
1680: Hay Cart with Smugglers
Castle Castle Sets Forestmen Official Sets Small Builds 

1680: Hay Cart with Smugglers

August 12, 2024September 24, 2024 Master Builder
2151: Robo Raider
Medium Builds Official Sets Robo Force Robo Force Alternate Builds Robo Force Sets Space 

2151: Robo Raider

January 14, 2021September 3, 2025 Master Builder
6199: Hydro Crystalization Station
ABCs Aquazone Aquazone Sets Box Story Extra Large Builds Hydronauts Official Sets Stingrays 

6199: Hydro Crystalization Station

February 18, 2025February 18, 2025 Master Builder
1657: Bird
Basic Set Duplo Duplo Sets Official Sets Very Small Builds 

1657: Bird

December 28, 2021December 29, 2021 Master Builder
6059: Knight’s Stronghold
Black Knights Castle Castle Sets Medium Builds Official Sets 

6059: Knight’s Stronghold

July 13, 2021July 13, 2021 Master Builder
6683: Burger Stand
Classic Town Food and Drink Official Sets Small Builds Town Town Sets 

6683: Burger Stand

May 1, 2024May 1, 2024 Master Builder
6822: Space Digger
Classic Space Classic Space Sets Official Sets Small Builds Space 

6822: Space Digger

March 12, 2024March 12, 2024 Master Builder
6805: Astro Dasher
Classic Space Classic Space Sets Official Sets Space Very Small Builds 

6805: Astro Dasher

December 10, 2025December 10, 2025 Master Builder
5948: Desert Expedition
Adventurers Adventurers Sets Desert Medium Builds Official Sets 

5948: Desert Expedition

October 8, 2024October 8, 2024 Master Builder
7781: The Batmobile: Two-Face’s Escape
Batman I BATMAN™ BATMAN™ Sets Large Builds Official Sets 

7781: The Batmobile: Two-Face’s Escape

March 27, 2026March 27, 2026 Master Builder
6581: Dig N’ Dump
Classic Town Construction Medium Builds Official Sets Town Town Sets 

6581: Dig N’ Dump

November 7, 2022November 7, 2022 Master Builder
7303 (1415, Kabaya: Life On Mars 3): Jet Scooter
Life on Mars Life on Mars Sets Official Sets Very Small Builds 

7303 (1415, Kabaya: Life On Mars 3): Jet Scooter

February 25, 2025February 25, 2025 Master Builder
6799: Showdown Canyon
Box Plus Cowboys Official Sets Playscape/Play Stage Box Small Builds Western Western Sets 

6799: Showdown Canyon

August 1, 2023October 8, 2024 Master Builder
6887: Allied Avenger
ABCs Blacktron II Blacktron II Sets Official Sets Small Builds 

6887: Allied Avenger

October 5, 2019July 31, 2023 Master Builder

BOXES

INSTRUCTIONS

FAVORITES

MINIFIGS

About This Site

Logo
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.