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
- 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 Town Race Small Builds Town Town Alternate Builds

1821 – Back C

February 10, 2025February 10, 2025 Master Builder 3108 Views

From: 1821: Rally Racers
Name: TBD
Submitted by: USER
Instructions

← 1821 – Back B
6713: Grip-n-Go Challenge →

You May Also Like

1728 (6145): Crystal Crawler {with Aqua Playscape}

August 1, 2023March 22, 2025 Master Builder

6385: Fire House-I

August 7, 2022August 7, 2022 Master Builder

6872 – Back A

October 19, 2019April 21, 2026 Master Builder

6938 – Back D

December 22, 2023January 1, 2024 Master Builder

6982 – Back B

November 9, 2019November 9, 2019 Master Builder

6266 – Back A

December 27, 2021June 3, 2022 Master Builder

EXPLORE MORE OFFICIAL SETS

Aquaraiders I Aquazone Aquazone Sets Large Builds Official Sets

2161: Aqua Dozer

January 8, 2020April 4, 2020 Master Builder

Year Released: 1997Bricklink

Classic Town Official Sets Supplemental Town

6313: Cross-Road Plates

October 10, 2022October 10, 2022 Master Builder

Harry Potter Harry Potter Sets Medium Builds Official Sets Sorcerer's Stone

4705: Snape’s Class

April 16, 2021April 16, 2021 Master Builder

Classic Town Hospital Medium Builds Official Sets Town Town Sets

6356: Med-Star Rescue Plane

March 16, 2022March 16, 2022 Master Builder

Large Builds Official Sets Samsonite Samsonite Sets Town Town Sets

725-3: Town Plan

October 9, 2024October 9, 2024 Master Builder

Classic Town Large Builds Official Sets Recreation Town Town Sets

6563: Gator Landing

July 20, 2022July 20, 2022 Master Builder

Indians Official Sets Very Small Builds Western Western Sets

2845: Indian Chief

October 10, 2023October 10, 2023 Master Builder

Castle Castle Sets Lion Knights Official Sets Small Builds

6039: Twin Arm Launcher

April 10, 2021April 10, 2021 Master Builder

Airport Medium Builds Official Sets Town Town Sets World City

4032: Passenger Plane

December 29, 2021December 29, 2021 Master Builder

Medium Builds Official Sets Studio Sets Studios

1381: Vampire’s Crypt

July 2, 2024July 2, 2024 Master Builder

Castle Castle Sets Official Sets Royal Knights Very Small Builds

1752: Boat with Armor

April 10, 2023April 10, 2023 Master Builder

Box Story Large Builds Official Sets Pirates Pirates I Pirates Sets

6279: Skull Island

February 21, 2025February 21, 2025 Master Builder

Classic Town Medium Builds Official Sets Town Town Sets Traffic

6373: Motorcycle Shop

January 6, 2022January 6, 2022 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds Space

1580: Lunar Scout

July 12, 2021July 12, 2021 Master Builder

Extra Large Builds Model Team Model Team Sets Official Sets

5581: Magic Flash

January 2, 2024January 2, 2024 Master Builder

Classic Town Large Builds Official Sets Police Town Town Sets

6483: Coastal Patrol

December 29, 2021December 29, 2021 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
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.