Skip to content
Back of the Box Builds

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
    • Submit Instructions!
    • New Instructions
    • New Official Sets
    • New Alternate Builds
    • Minifigs
    • Very Small Builds
    • Small Builds
    • Medium Builds
    • Large Builds
    • Extra Large Builds
    • How BOTBB was Built
  • 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 2535 Views

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

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

You May Also Like

Book 7777 – Page 6-7

November 11, 2021November 11, 2021 Master Builder

6506 – Back C

November 22, 2025November 25, 2025 Master Builder

6155: Deep Sea Predator

May 10, 2022May 10, 2022 Master Builder

6900 – Back A

April 17, 2025April 21, 2025 Master Builder

194: Family

October 4, 2019October 6, 2019 Master Builder

926 – Back C

October 22, 2019October 13, 2021 Master Builder

EXPLORE MORE OFFICIAL SETS

3721: Clive Crocodile on Skateboard
Fabuland Fabuland Sets Official Sets Very Small Builds 

3721: Clive Crocodile on Skateboard

February 26, 2023August 1, 2023 Master Builder

Year Released: 1988BricklinkInstructions NONE 🙁

4706: Forbidden Corridor
Harry Potter Harry Potter Sets Large Builds Official Sets Sorcerer's Stone 

4706: Forbidden Corridor

February 27, 2023February 27, 2023 Master Builder
6826: Crater Crawler
Classic Space Classic Space Sets Official Sets Very Small Builds 

6826: Crater Crawler

September 26, 2019October 22, 2019 Master Builder
6066: Camouflaged Outpost
Castle Castle Sets Forestmen Medium Builds Niels Milan Pedersen Official Sets 

6066: Camouflaged Outpost

October 11, 2021July 29, 2023 Master Builder
6358: Snorkel Squad
Classic Town Fire Medium Builds Official Sets Town Town Sets 

6358: Snorkel Squad

April 15, 2021April 15, 2021 Master Builder
6802: Space Probe
Classic Space Classic Space Sets Official Sets Space Very Small Builds 

6802: Space Probe

October 10, 2022October 10, 2022 Master Builder
6356: Med-Star Rescue Plane
Classic Town Hospital Medium Builds Official Sets Town Town Sets 

6356: Med-Star Rescue Plane

March 16, 2022March 16, 2022 Master Builder
6881: Lunar Rocket Launcher
Classic Space Classic Space Sets Official Sets Small Builds 

6881: Lunar Rocket Launcher

October 2, 2019October 2, 2019 Master Builder
6344: Jet Speed Justice
Classic Town Medium Builds Official Sets Police Town Town Sets 

6344: Jet Speed Justice

October 8, 2024October 8, 2024 Master Builder
2151: Robo Raider
Medium Builds Official Sets Robo Force Robo Force Alternate Builds Robo Force Sets Space 

2151: Robo Raider

January 14, 2021September 3, 2025 Master Builder
6830: Space Patroller
Bjarne Tveskov Futron Sets Futuron Official Sets Space Very Small Builds 

6830: Space Patroller

April 8, 2020July 29, 2023 Master Builder
6530: Sport Coupe (City Car)
Classic Town Official Sets Town Town Sets Traffic Very Small Builds 

6530: Sport Coupe (City Car)

April 4, 2020April 19, 2021 Master Builder
8024: Universal Set
Medium Builds Official Sets Technic Technic Sets 

8024: Universal Set

October 20, 2019August 28, 2023 Master Builder
4720: Knockturn Alley
Chamber of Secrets Harry Potter Harry Potter Sets Medium Builds Official Sets 

4720: Knockturn Alley

July 9, 2024July 9, 2024 Master Builder
6900: Cyber Saucer
ABCs Large Builds Official Sets Space UFO UFO Sets 

6900: Cyber Saucer

October 2, 2024March 22, 2025 Master Builder
1974-3: Smuggler’s Hayride
Bonus/Value Pack Sets Castle Castle Sets Forestmen Official Sets Small Builds 

1974-3: Smuggler’s Hayride

September 7, 2023September 8, 2023 Master Builder

BOXES

INSTRUCTIONS

FAVORITES

MINIFIGS

About This Site

Logo
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 © 2025 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.