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 Res-Q Small Builds Town Town Alternate Builds

6431 – Back B

January 20, 2022January 20, 2022 Master Builder 4039 Views

From: 6431: Road Rescue
Name: TBD
Submitted by: USER
Instructions:

← 6431 – Back A
6431 – Back C →

You May Also Like

6815 – Back C

July 11, 2022July 13, 2022 Master Builder

Space 3-Pack: Exploriens

October 2, 2024October 3, 2024 Master Builder

6552 – Back C

May 7, 2024May 11, 2024 Master Builder

6592 – Back D

June 23, 2025June 23, 2025 Master Builder

6829 – Back C

April 14, 2023April 17, 2024 Master Builder

6970 – Back E

June 8, 2022June 29, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Town Official Sets Small Builds Town Town Sets Traffic

6661: TV Van (Mobile TV Studio)

February 3, 2022February 3, 2022 Master Builder

Year Released: 1991BricklinkInstructions

ABCs Aquazone Aquazone Sets Hydronauts Official Sets Small Builds

6150 (6159): Crystal Detector

February 23, 2023February 18, 2025 Master Builder

Blacktron II Blacktron II Alternate Builds Blacktron II Sets Bonus/Value Pack Sets Bonus/Value Packs Large Builds Official Sets Space Super Model

4741: Blacktron Super Vehicle Value 3-Pack

February 19, 2026February 20, 2026 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

1526: Unknown (Space Radar Buggy)

August 20, 2025August 29, 2025 Master Builder

Castle Castle Sets Lion Knights Official Sets Small Builds

6012: Siege Cart

September 24, 2024September 24, 2024 Master Builder

Box Marketing Blurb Castle Castle Sets Forestmen Medium Builds Official Sets

6071: Forestmen’s Crossing

October 23, 2019April 3, 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

Official Sets Small Builds Town Town Sets

1665: Duel FX Racers

April 30, 2024April 30, 2024 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

6822: Space Digger

March 12, 2024March 12, 2024 Master Builder

Aquashark Aquazone Aquazone Sets Large Builds Official Sets

6190: Shark’s Crystal Cave

July 13, 2021January 20, 2022 Master Builder

Bonus/Value Pack Sets Bonus/Value Packs Official Sets Race Small Builds Town

1509: Town Value Pack

October 8, 2024October 8, 2024 Master Builder

Holiday and Event Holiday and Event Sets Official Sets Small Builds

1549: Santa and Chimney

February 27, 2023March 5, 2026 Master Builder

Black Knights Castle Castle Sets Medium Builds Official Sets

6057: Sea Serpent

April 14, 2025April 14, 2025 Master Builder

Classic Town Official Sets Police Small Builds Town Town Sets

6681: Police Van

October 13, 2021October 13, 2021 Master Builder

ABCs Insectoids Insectoids Sets Official Sets Space Very Small Builds

6817: Beta Buzzer

June 1, 2022March 22, 2025 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds

6871: Star Patrol Launcher

September 27, 2019September 30, 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
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.