Skip to content
Back of the Box Builds

Back of the Box Builds

LEGO Set Alternate Builds!

  • THEMES
    • Adventurers
    • Aquazone
    • Belville
    • Building Set with People
    • Castle
    • Duplo
    • Harry Potter
    • Holiday and Event
    • Model Team
    • Ninja
    • Pirates
    • Rock Raiders
    • Space
    • Star Wars
    • Studios
    • Technic
    • Time Cruisers
    • Town
    • Train
    • Western
    • Misc
  • USEFUL LINKS
    • Contribute!
    • New Instructions
    • New Official Sets
    • New Alternate Builds
    • Minifigs
    • Very Small Builds
    • Small Builds
    • Medium Builds
    • Large Builds
    • Extra Large Builds
    • About
  • THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP
Alternate Builds Classic Space Classic Space Alternate Builds Large Builds 

6783 – Back A

May 8, 2022May 8, 2022 Master Builder 805 Views

From: 6783: Sonar Transmitting Cruiser
Name: TBD
Submitted by: USER
Instructions

  • ← 6783: Sonar Transmitting Cruiser
  • 6783 – Back B →

You May Also Like

6875 – Back A

September 16, 2019October 25, 2021 Master Builder

6892: Modular Space Transport

November 17, 2021November 17, 2021 Master Builder

6931 – Back A

January 12, 2021October 25, 2021 Master Builder

6440 – Back B

December 29, 2021December 29, 2021 Master Builder

6803 – Back A

September 21, 2019October 25, 2021 Master Builder

926 – Back G

October 22, 2019October 13, 2021 Master Builder

EXPLORE MORE OFFICIAL SETS

6267: Lagoon Lock-Up
Imperial Soldiers Medium Builds Official Sets Pirates Pirates I Pirates Sets 

6267: Lagoon Lock-Up

October 11, 2021October 11, 2021 Master Builder

Year Released: 1991BricklinkInstructions

1877: Crusader’s Cart
Castle Castle Sets Forestmen Official Sets Small Builds 

1877: Crusader’s Cart

October 11, 2021October 11, 2021 Master Builder
6881: Lunar Rocket Launcher
Classic Space Classic Space Sets Official Sets Small Builds 

6881: Lunar Rocket Launcher

October 2, 2019October 2, 2019 Master Builder
6389: Fire Control Center
Classic Town Extra Large Builds Fire Official Sets Town Town Sets 

6389: Fire Control Center

January 24, 2022January 24, 2022 Master Builder
6349: Vacation House
Building Classic Town Medium Builds Official Sets Town Town Sets 

6349: Vacation House

July 1, 2021July 12, 2021 Master Builder
6090: Royal Knight’s Castle
Castle Castle Sets Extra Large Builds Official Sets Royal Knights 

6090: Royal Knight’s Castle

July 13, 2021July 13, 2021 Master Builder
6067: Guarded Inn
Castle Castle Sets Large Builds Lion Knights Official Sets 

6067: Guarded Inn

February 9, 2021February 9, 2021 Master Builder
6955: Space Lock-Up Isolation Base
Large Builds Official Sets Space Space Police I Space Police I Sets 

6955: Space Lock-Up Isolation Base

February 3, 2021February 3, 2021 Master Builder
920 (483): Alpha-1 Rocket Base
Classic Space Classic Space Sets Medium Builds Official Sets Space 

920 (483): Alpha-1 Rocket Base

February 2, 2021October 13, 2021 Master Builder
4883: Gear Grinders
Designer Sets Designer Sets Alternate Builds Designer Sets Set Medium Builds Official Sets 

4883: Gear Grinders

August 2, 2021August 2, 2021 Master Builder
6670: Rescue Rig
Classic Town Official Sets Small Builds Town Town Sets Wrecker 

6670: Rescue Rig

November 19, 2020November 19, 2020 Master Builder
2331: Barney The Skateboard Bear
Basic Set Duplo Duplo Sets Official Sets Very Small Builds 

2331: Barney The Skateboard Bear

December 29, 2021December 29, 2021 Master Builder
6160: Sea Scorpion
Aquazone Aquazone Sets Large Builds Official Sets Stingrays 

6160: Sea Scorpion

October 29, 2019April 4, 2020 Master Builder
6954: Renegade
Blacktron Blacktron Sets Large Builds Official Sets Space 

6954: Renegade

September 7, 2020November 27, 2020 Master Builder
6975: Alien Avenger
Large Builds Official Sets UFO UFO Sets 

6975: Alien Avenger

November 9, 2019November 9, 2019 Master Builder
379: Bus Station
Classic Town Medium Builds Official Sets Town Town Sets Traffic 

379: Bus Station

April 10, 2021April 10, 2021 Master Builder

MINIFIGS

About This Site

Logo
In the 1960s, 70s, 80s, 90s, and early 2000s there were pictures of additional builds on the back of LEGO® boxes. There was a note that said you could build any of those exciting models with that set. There were no instructions, until now.

Themes

  • Adventurers
  • Aquazone
  • Belville
  • Building Set with People
  • Castle
  • Duplo
  • Harry Potter
  • Holiday and Event
  • Model Team
  • Ninja
  • Pirates
  • Rock Raiders
  • Space
  • Star Wars
  • Studio
  • Technic
  • Time Cruisers
  • Town
  • Train
  • Western
  • Misc

Useful Links

  • Contribute!
  • 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)
  • About

In Honor of 1526

The classic space set that never was.

Copyright © 2022 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.