Skip to content
Back of the Box Builds

Back of the Box Builds

LEGO 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 Instructions Added Medium Alt Build Medium Builds Space Space Police I Space Police I Alternate Builds 

6781 – Back A

April 19, 2021November 19, 2021 Master Builder 1325 Views

From: 6781: SP-Striker
Name: SP-Sentinel 1
Instructions: View PDF | Download .io File

Contributions

  1. Name, PDF and .io file submitted on November 17, 2021 by: Krysto
  • ← 6781: SP-Striker
  • 6077-2: Forestmen’s River Fortress →

You May Also Like

6940 – Back A

September 16, 2019November 19, 2021 Master Builder

2151 – Back A

January 14, 2021January 14, 2021 Master Builder

6381 – Back A

October 5, 2019October 5, 2019 Master Builder

4500: Rebel Snowspeeder

April 9, 2020April 9, 2020 Master Builder

928 – Back E

November 25, 2020October 13, 2021 Master Builder

6932 – Back C

September 24, 2019January 10, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

1968: {Unknown}
Classic Space Classic Space Sets Medium Builds Official Sets Space 

1968: {Unknown}

August 28, 2020February 3, 2021 Master Builder

Year Released: 1985InstructionsBricklink

6679: Dark Shark
Classic Town Harbor Official Sets Small Builds Town Town Sets Wrecker 

6679: Dark Shark

December 28, 2021December 28, 2021 Master Builder
6651: Post Office Van
Classic Town Official Sets Post Office Small Builds Town Town Sets 

6651: Post Office Van

February 3, 2021February 3, 2021 Master Builder
6115: Shark Scout
Aquashark Aquazone Aquazone Sets Large Builds Official Sets 

6115: Shark Scout

April 9, 2020April 9, 2020 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
6356: Med-Star Rescue Plane
Classic Town Hospital Medium Builds Official Sets Town Town Sets 

6356: Med-Star Rescue Plane

March 16, 2022March 16, 2022 Master Builder
6541: Intercoastal Seaport
Classic Town Extra Large Builds Harbor Official Sets Town Town Sets Wrecker 

6541: Intercoastal Seaport

January 25, 2022January 25, 2022 Master Builder
6268: Renegade Runner
Medium Builds Official Sets Pirates Pirates I Pirates Sets 

6268: Renegade Runner

April 9, 2020July 13, 2021 Master Builder
924 (487): Space Cruiser
Classic Space Classic Space Sets Medium Builds Official Sets Space 

924 (487): Space Cruiser

January 25, 2022January 25, 2022 Master Builder
7139: Ewok Attack
Episode IV/V/VI Official Sets Small Builds Star Wars Star Wars Sets 

7139: Ewok Attack

June 27, 2022June 27, 2022 Master Builder
6983: Ice Station Odyssey
Ice Planet 2002 Ice Planet 2002 Sets Large Builds Official Sets 

6983: Ice Station Odyssey

November 9, 2019November 9, 2019 Master Builder
6896: Celestial Forager
M:Tron M:Tron Sets Official Sets Small Builds Space 

6896: Celestial Forager

January 26, 2022January 26, 2022 Master Builder
3442: Legoland California Truck Limited Edition
Classic Town Official Sets Small Builds Town Town Sets Traffic 

3442: Legoland California Truck Limited Edition

October 13, 2021October 13, 2021 Master Builder
6355: Derby Trotter
Classic Town Medium Builds Official Sets Recreation Town Town Sets 

6355: Derby Trotter

December 28, 2021December 28, 2021 Master Builder
6848: Strategic Pursuer
Futron Sets Futuron Official Sets Small Builds Space 

6848: Strategic Pursuer

April 16, 2021April 16, 2021 Master Builder
6296: Shipwreck Island
Medium Builds Official Sets Pirates Pirates I Pirates Sets 

6296: Shipwreck Island

January 12, 2022January 12, 2022 Master Builder

BUILD!

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. On the box was, "Build any of these exciting models with this set." There were no instructions for these alternate builds, 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.