Skip to content

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
THIS IS AN INDEPENDENT SITE NOT AUTHORIZED OR SPONSORED BY THE LEGO GROUP

Alternate Builds Classic Space Classic Space Alternate Builds Instructions Added Medium Alt Build Medium Builds Space

6931 – Back C

January 12, 2021March 14, 2025 Master Builder 5139 Views

From: 6931: FX-Star Patroller
Name: FX-Star and Surface Scout ¹
Instructions: View PDF | Download .io File

Contributions

Name, PDF, and .io file submitted January 2021 by: Mr.AstonishedRaccoon

← 6931 – Back B
6849: Satellite Patroller →

You May Also Like

6932 – Back D

September 24, 2019January 10, 2022 Master Builder

4766 – Back A

May 16, 2023December 16, 2025 Master Builder

6271 – Back C

January 6, 2022February 20, 2025 Master Builder

6891 – Back B

August 3, 2024August 3, 2024 Master Builder

6528 – Back B

July 8, 2022July 8, 2022 Master Builder

720 – Bottom (US Box)

February 8, 2024February 8, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

Castle Castle Sets Crusaders Official Sets Small Builds

6042: Dungeon Hunters

October 1, 2024October 1, 2024 Master Builder

Year Released: 1990BricklinkInstructions

Futron Sets Futuron Medium Builds Official Sets Space

6770: Lunar Transporter Patroller

September 11, 2023September 11, 2023 Master Builder

Classic Space Classic Space Sets Official Sets Space Very Small Builds

885: Space Scooter

January 27, 2024May 13, 2026 Master Builder

LEGOLAND Official Sets Small Builds Vehicles

385: Jeep CJ-5

October 26, 2026October 26, 2026 Master Builder

Castle Castle Sets Lion Knights Official Sets Small Builds

6012: Siege Cart

September 24, 2024September 24, 2024 Master Builder

Classic Town Medium Builds Official Sets Recreation Town Town Sets

1817: Sea Plane with Hut and Boat

January 12, 2022January 12, 2022 Master Builder

Aquanauts Aquazone Aquazone Sets Official Sets Very Small Builds

1749: Paravane

July 26, 2020July 26, 2020 Master Builder

Ice Planet 2002 Ice Planet 2002 Sets Official Sets Small Builds Space

6879: Blizzard Baron

November 20, 2019July 29, 2023 Master Builder

Medium Builds Ninja Ninja Alternate Builds Ninja Official Sets Official Sets

3051: Blaze Attack

October 26, 2026October 26, 2026 Master Builder

Exploriens Exploriens Sets Official Sets Space Very Small Builds

6815: Hovertron

June 28, 2022June 28, 2022 Master Builder

Classic Town Fire Official Sets Town Town Sets Very Small Builds

6511: Rescue Runabout

May 10, 2022May 10, 2022 Master Builder

ABCs Large Builds Official Sets Robo Force Robo Force Sets Space

2152: Robo Raptor

January 14, 2021March 22, 2025 Master Builder

Classic Space Classic Space Sets Large Builds Official Sets

6951: Robot Command Center

September 21, 2019September 28, 2019 Master Builder

Adventurers Adventurers Sets Dino Island Medium Builds Official Sets

5935: Island Hopper

April 21, 2025April 21, 2025 Master Builder

Box Story Large Builds Official Sets Pirates Pirates I Pirates Sets

6281: Pirates Perilous Pitfall

February 21, 2025February 21, 2025 Master Builder

Castle Castle Sets Official Sets Very Small Builds Wolfpack

1596: Ghostly Hideout

July 25, 2024July 25, 2024 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
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.