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 Medium Alt Build Medium Builds Spyrius Spyrius Alternate Builds

6939 – Back B

February 5, 2023February 13, 2023 Master Builder 4352 Views

From: 6939: Saucer Centurion
Name: Spy-star Defender ¹
Instructions: View PDF | Download .io File

Contributions

Name, PDF and .io file submitted on February 5, 2023 by: Valdis

← 6939 – Back A
6939 – Back C →

You May Also Like

6630 – Back D

October 13, 2021October 13, 2021 Master Builder

6957 – Back C

July 11, 2022December 20, 2023 Master Builder

1954 – Back A

January 26, 2022January 26, 2022 Master Builder

6279 – Back B

February 21, 2025February 21, 2025 Master Builder

6358 – Back B

July 24, 2022May 17, 2023 Master Builder

4751 – Back A

May 16, 2023May 16, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Space Classic Space Sets Official Sets Very Small Builds

6803: Space Patrol

September 21, 2019February 15, 2026 Master Builder

Year Released: 1983Bricklink

Classic Space Classic Space Sets Official Sets Space Very Small Builds

6806: Surface Hopper

April 16, 2021April 16, 2021 Master Builder

Holiday and Event Holiday and Event Sets Official Sets Very Small Builds

1555: Santa Claus Polybag

April 28, 2023April 28, 2023 Master Builder

Classic Town Off-Road Official Sets Small Builds Town Town Sets

6660: Hook and Haul Wrecker

June 23, 2025June 23, 2025 Master Builder

Medium Builds Official Sets Technic Technic Sets

8044: Universal Pneumatic Set

August 23, 2024August 23, 2024 Master Builder

Classic Town Construction Official Sets Town Town Sets Very Small Builds

6512: Landscape Loader

May 10, 2022May 10, 2022 Master Builder

Cowboys Official Sets Very Small Builds Western Western Sets

6790: Bandit’s Wheelgun

October 10, 2023October 10, 2023 Master Builder

Castle Castle Sets Lion Knights Official Sets Small Builds

6049: Viking Voyager

June 30, 2022June 30, 2022 Master Builder

ABCs Classic Space Classic Space Sets Medium Builds Official Sets Space

6931: FX-Star Patroller

January 12, 2021March 20, 2025 Master Builder

ABCs Box Story Ice Planet 2002 Ice Planet 2002 Sets Jørn Thomsen Large Builds Official Sets Space

6973: Deep Freeze Defender

September 26, 2019December 17, 2024 Master Builder

Classic Town Official Sets Small Builds Town Town Sets Wrecker

6670: Rescue Rig

November 19, 2020November 19, 2020 Master Builder

Blacktron II Blacktron II Sets Official Sets Space Very Small Builds

1694: Galactic Scout

February 9, 2021February 9, 2021 Master Builder

Extra Large Builds Official Sets Res-Q Town Town Sets

6479: Emergency Response Center

April 16, 2021January 20, 2022 Master Builder

Classic Town Harbor Medium Builds Official Sets Town Town Sets Wrecker

6596: Wave Master

September 15, 2022September 15, 2022 Master Builder

Bonus/Value Packs Classic Space Classic Space Sets Duplicate Set Number Official Sets Small Builds Space

1967: System Bonus Pack

February 13, 2025February 13, 2025 Master Builder

Cowboys Jørn Thomsen Official Sets Small Builds Western Western Sets

6716: Weapons Wagon

April 2, 2022July 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 © 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.