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 Classic Town Race Town Town Alternate Builds Very Small Builds

1821 – Back A

February 10, 2025February 10, 2025 Master Builder 2705 Views

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

← 1821: Rally Racers
1821 – Back B →

You May Also Like

6927 – Back C

October 22, 2019October 22, 2019 Master Builder

6541 – Back F

February 5, 2023February 12, 2023 Master Builder

381: Police Headquarters

July 27, 2023July 27, 2023 Master Builder

6664 – Back B

March 29, 2022April 5, 2022 Master Builder

4482 – Back A

April 9, 2020July 6, 2022 Master Builder

6630 – Back B

October 13, 2021October 13, 2021 Master Builder

EXPLORE MORE OFFICIAL SETS

Classic Space Classic Space Sets Jens Nygaard Knudsen Official Sets Small Builds

897: Mobile Missile Command

September 14, 2019July 31, 2023 Master Builder

Year Released: 1985Designer: Jens Nygaard KnudsenBricklinkInstructions

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

1597: Castle 3-Pack

July 22, 2024July 22, 2024 Master Builder

ABCs Blacktron II Blacktron II Sets Official Sets Very Small Builds

6851: Tri-Wheeled Tyrax

October 24, 2019July 31, 2023 Master Builder

Box Plus Extra Large Builds FreeStyle FreeStyle Official Sets Official Sets Poster Storage Container

2146: FreeStyle with Storage Case

December 15, 2025December 15, 2025 Master Builder

Islanders Official Sets Pirates Pirates I Pirates Sets Small Builds

6236: King Kahuka

December 28, 2021December 28, 2021 Master Builder

Classic Town Official Sets Race Small Builds Town Town Sets

6669: Diesel Daredevil

March 17, 2022March 17, 2022 Master Builder

Classic Town Official Sets Town Town Sets Traffic Very Small Builds

6530: Sport Coupe (City Car)

April 4, 2020April 19, 2021 Master Builder

Castle Castle Sets Official Sets Royal Knights Very Small Builds

1752: Boat with Armor

April 10, 2023April 10, 2023 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

Castle Castle Sets Fright Knights Large Builds Official Sets

6087: Witch’s Magic Manor

July 8, 2022July 8, 2022 Master Builder

Classic Town Large Builds Official Sets Recreation Town Town Sets

6552: Rocky River Retreat

July 15, 2022July 15, 2022 Master Builder

Bjarne Tveskov Futron Sets Futuron Official Sets Very Small Builds

6810: Laser Ranger

September 25, 2019July 29, 2023 Master Builder

Classic Space Classic Space Sets Official Sets Small Builds

6881: Lunar Rocket Launcher

October 2, 2019October 2, 2019 Master Builder

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

4501: Mos Eisley Cantina

December 29, 2021December 29, 2021 Master Builder

Large Builds M:Tron M:Tron Alternate Builds M:Tron Sets Official Sets Space Super Model

6862: Secret Space Voyager

July 29, 2023July 29, 2023 Master Builder

ABCs Classic Space Classic Space Sets Large Builds Official Sets Space

6783: Sonar Transmitting Cruiser

May 8, 2022August 15, 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.