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 4335 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

6402 – Back A

October 5, 2019November 18, 2021 Master Builder

6941 – Inside B

September 15, 2019August 1, 2023 Master Builder

2331 – Back E

December 29, 2021December 29, 2021 Master Builder

6077 – Back C

July 13, 2021July 13, 2021 Master Builder

6465 – Back B

March 3, 2025March 3, 2025 Master Builder

6596 – Back B

September 15, 2022September 15, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Alpha Team Alpha Team Sets Mission Deep Sea Official Sets Very Small Builds

Kabaya: Alpha Team 3

September 9, 2024September 9, 2024 Master Builder

Year Released: 1998?BricklinkInstructions

Building Classic Town Medium Builds Official Sets Town Town Sets

6349: Vacation House

July 1, 2021July 12, 2021 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

6880: Surface Explorer

May 4, 2020May 4, 2020 Master Builder

ABCs Classic Town Fire Official Sets Small Builds Town Town Sets

6685: Fire Copter 1

October 13, 2021August 3, 2023 Master Builder

Black Knights Castle Castle Sets Medium Builds Official Sets

6059: Knight’s Stronghold

July 13, 2021July 13, 2021 Master Builder

ABCs Classic Space Classic Space Sets Medium Builds Official Sets Space

6892: Modular Space Transport

November 17, 2021July 31, 2023 Master Builder

Castle Castle Sets Dragon Knights Official Sets Very Small Builds

1732 (1712): Crossbow Cart

August 19, 2024October 8, 2024 Master Builder

ABCs Aquazone Aquazone Sets Box Story Extra Large Builds Hydronauts Official Sets Stingrays

6199: Hydro Crystalization Station

February 18, 2025February 18, 2025 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds

6872: Xenon X-Craft

October 19, 2019October 19, 2019 Master Builder

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

7130: Snowspeeder

June 28, 2022June 28, 2022 Master Builder

Episode III Medium Builds Official Sets Star Wars Star Wars Sets

6205: V-wing Fighter

March 3, 2023March 3, 2023 Master Builder

Classic Town Official Sets Town Town Sets Traffic Very Small Builds

6613: Telephone Booth

November 6, 2024November 6, 2024 Master Builder

Box Marketing Blurb Classic Town Large Builds Official Sets Police Town Town Sets

6386: Police Command Base

February 4, 2021April 3, 2024 Master Builder

Duplicate Set Number Official Sets UFO UFO Sets Very Small Builds

6901-2: Space Plane

December 16, 2025December 16, 2025 Master Builder

Imperial Guards Official Sets Pirates Pirates I Pirates Sets Small Builds

6266: Cannon Cove

December 27, 2021June 3, 2022 Master Builder

Building Set with People Building Set with People Sets Official Sets Small Builds

194: Family

October 4, 2019October 6, 2019 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.