Skip to content
Back of the Box Builds

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
    • 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 Basic Set Duplo Duplo Alternate Builds Very Small Builds 

2331 – Back B

December 29, 2021December 29, 2021 Master Builder 5650 Views

From: 2331: Barney The Skateboard Bear
Name: TBD
Submitted by: USER
Instructions

  • ← 2331 – Back A
  • 2331 – Back C →

You May Also Like

6135 – Back A

March 21, 2023May 19, 2023 Master Builder

6973 – Back B

July 13, 2022September 16, 2022 Master Builder

725 – Side R

July 22, 2024 Master Builder

6870 – Back A

June 22, 2025June 24, 2025 Master Builder

6698 – Back B

June 28, 2022June 28, 2022 Master Builder

6552 – Back D

May 8, 2024May 11, 2024 Master Builder

EXPLORE MORE OFFICIAL SETS

6915: Warp Wing Fighter
Large Builds Official Sets UFO UFO Sets 

6915: Warp Wing Fighter

November 9, 2019November 9, 2019 Master Builder

Year Released: 1997Bricklink

1597: Castle 3-Pack
Bonus/Value Pack Sets Bonus/Value Packs Official Sets Small Builds 

1597: Castle 3-Pack

July 22, 2024January 20, 2026 Master Builder
6851: Tri-Wheeled Tyrax
ABCs Blacktron II Blacktron II Sets Official Sets Very Small Builds 

6851: Tri-Wheeled Tyrax

October 24, 2019July 31, 2023 Master Builder
6804: Surface Rover
Classic Space Classic Space Sets Official Sets Very Small Builds 

6804: Surface Rover

September 25, 2019September 28, 2019 Master Builder
6925: Interplanetary Rover
Bjarne Tveskov Futron Sets Futuron Medium Builds Official Sets 

6925: Interplanetary Rover

September 25, 2019July 29, 2023 Master Builder
6551: Checkered Flag 500
Medium Builds Official Sets Town Town Sets 

6551: Checkered Flag 500

November 21, 2023November 21, 2023 Master Builder
1843 – Bottom
Bonus/Value Pack Alternate Builds Castle Castle Alternate Builds Instructions Added Official Sets Royal Knights Small Alt Build Small Builds Space Spyrius Spyrius Alternate Builds 

1843 – Bottom

January 22, 2021March 14, 2025 Master Builder
6854: Alien Fossilizer
ABCs Exploriens Exploriens Sets Official Sets Small Builds Space 

6854: Alien Fossilizer

July 15, 2022March 22, 2025 Master Builder
4883: Gear Grinders
Designer Sets Designer Sets Alternate Builds Designer Sets Set Medium Builds Official Sets 

4883: Gear Grinders

August 2, 2021August 2, 2021 Master Builder
5975: T-Rex Transport
Adventurers Adventurers Sets Dino Island Official Sets Small Builds 

5975: T-Rex Transport

December 29, 2021December 29, 2021 Master Builder
889: Radar Truck
Classic Space Classic Space Sets Official Sets Very Small Builds 

889: Radar Truck

September 22, 2019September 28, 2019 Master Builder
6492: Hypno Cruiser
Medium Builds Official Sets Time Cruisers Time Cruisers Sets 

6492: Hypno Cruiser

December 29, 2021March 20, 2025 Master Builder
6311: Curved Road Plates
Classic Town Official Sets Supplemental Town 

6311: Curved Road Plates

October 10, 2022October 10, 2022 Master Builder
6354: Pursuit Squad
Classic Town Medium Builds Official Sets Police Town Town Sets 

6354: Pursuit Squad

February 9, 2022February 9, 2022 Master Builder
6589: Radical Racer {with Rocky Ridge Playscape}
Box Plus Extreme Team Official Sets Playscape/Play Stage Box Small Builds Town Town Sets 

6589: Radical Racer {with Rocky Ridge Playscape}

February 27, 2023October 8, 2024 Master Builder
6670: Rescue Rig
Classic Town Official Sets Small Builds Town Town Sets Wrecker 

6670: Rescue Rig

November 19, 2020November 19, 2020 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
  • 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.