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

Duplo Alternate Builds

Alternate Builds Basic Set Duplo Duplo Alternate Builds Very Small Builds 

2333 – Side L

May 16, 2023May 16, 2023 Master Builder 3860 Views

From: 2333: AnimalName: TBDSubmitted by: USERInstructions

Read more
Alternate Builds Basic Set Duplo Duplo Alternate Builds Very Small Builds 

2333 – Side R

May 16, 2023May 16, 2023 Master Builder 3977 Views

From: 2333: AnimalName: TBDSubmitted by: USERInstructions

Read more
Alternate Builds Basic Set Duplo Duplo Alternate Builds Very Small Builds 

2333 – Back B

May 16, 2023May 16, 2023 Master Builder 4067 Views

From: 2333: AnimalName: TBDSubmitted by: USERInstructions

Read more
Alternate Builds Basic Set Duplo Duplo Alternate Builds Very Small Builds 

2333 – Back A

May 16, 2023May 16, 2023 Master Builder 3773 Views

From: 2333: AnimalName: TBDSubmitted by: USERInstructions

Read more
Alternate Builds Basic Set Duplo Duplo Alternate Builds Very Small Builds 

2333 – Front A

May 16, 2023May 16, 2023 Master Builder 3760 Views

From: 2333: AnimalName: TBDSubmitted by: USERInstructions

Read more
Alternate Builds Duplo Duplo Alternate Builds Playhouse Very Small Builds 

2551 – Back C

February 27, 2023February 27, 2023 Master Builder 4006 Views

From: 2551: Grandma’s KitchenName: TBDSubmitted by: USERInstructions

Read more
Alternate Builds Duplo Duplo Alternate Builds Playhouse Very Small Builds 

2551 – Back B

February 27, 2023February 27, 2023 Master Builder 3846 Views

From: 2551: Grandma’s KitchenName: TBDSubmitted by: USERInstructions

Read more
Alternate Builds Duplo Duplo Alternate Builds Playhouse Very Small Builds 

2551 – Back A

February 27, 2023February 27, 2023 Master Builder 3915 Views

From: 2551: Grandma’s KitchenName: TBDSubmitted by: USERInstructions

Read more
Alternate Builds Basic Set Duplo Duplo Alternate Builds Very Small Builds 

2331 – Back E

December 29, 2021December 29, 2021 Master Builder 3911 Views

From: 2331: Barney The Skateboard BearName: TBDSubmitted by: USERInstructions

Read more
Alternate Builds Basic Set Duplo Duplo Alternate Builds Very Small Builds 

2331 – Back D

December 29, 2021December 29, 2021 Master Builder 3823 Views

From: 2331: Barney The Skateboard BearName: TBDSubmitted by: USERInstructions

Read more
Alternate Builds Basic Set Duplo Duplo Alternate Builds Very Small Builds 

2331 – Back C

December 29, 2021December 29, 2021 Master Builder 3962 Views

From: 2331: Barney The Skateboard BearName: TBDSubmitted by: USERInstructions

Read more
Alternate Builds Basic Set Duplo Duplo Alternate Builds Very Small Builds 

2331 – Back B

December 29, 2021December 29, 2021 Master Builder 3895 Views

From: 2331: Barney The Skateboard BearName: TBDSubmitted by: USERInstructions

Read more
Alternate Builds Basic Set Duplo Duplo Alternate Builds Very Small Builds 

2331 – Back A

December 29, 2021December 29, 2021 Master Builder 3629 Views

From: 2331: Barney The Skateboard BearName: TBDSubmitted by: USERInstructions

Read more
Alternate Builds Basic Set Duplo Duplo Alternate Builds Very Small Builds 

1657 – Back C

December 28, 2021December 28, 2021 Master Builder 3853 Views

From: 1657: BirdName: TBDSubmitted by: USERInstructions

Read more
Alternate Builds Basic Set Duplo Duplo Alternate Builds Very Small Builds 

1657 – Back B

December 28, 2021December 28, 2021 Master Builder 3923 Views

From: 1657: BirdName: TBDSubmitted by: USERInstructions

Read more
Alternate Builds Basic Set Duplo Duplo Alternate Builds Very Small Builds 

1657 – Back A

December 28, 2021December 28, 2021 Master Builder 3620 Views

From: 1657: BirdName: TBDSubmitted by: USERInstructions

Read more
Duplo Duplo Alternate Builds Idea Book 

Book 226 – Page 4-5

November 8, 2021November 11, 2021 Master Builder 3263 Views

From: Idea Book 226Year Released: 1981

Read more

EXPLORE MORE OFFICIAL SETS

6150 (6159): Crystal Detector
ABCs Aquazone Aquazone Sets Hydronauts Official Sets Small Builds 

6150 (6159): Crystal Detector

February 23, 2023February 18, 2025 Master Builder

Year Released: 1998BricklinkInstructions *Alternate Build Connection: Aqua Rover (LEGO Mania Magazine: May-June 1998)

6347: Monorail Accessory Track
Classic Town Official Sets Supplemental Town 

6347: Monorail Accessory Track

August 27, 2023August 27, 2023 Master Builder
6837: Cosmic Creeper (Mantis Scavenger)
ABCs Insectoids Insectoids Sets Official Sets Small Builds 

6837: Cosmic Creeper (Mantis Scavenger)

April 2, 2020March 22, 2025 Master Builder
6363: Auto Service Station
Classic Town Medium Builds Official Sets Town Town Sets Traffic 

6363: Auto Service Station

February 17, 2023February 17, 2023 Master Builder
6800 (6816, Kabaya: Space 2): Cyber Blaster
Official Sets Space UFO UFO Sets Very Small Builds 

6800 (6816, Kabaya: Space 2): Cyber Blaster

October 4, 2024February 25, 2025 Master Builder
6862: Secret Space Voyager
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
6802: Space Probe
Classic Space Classic Space Sets Official Sets Space Very Small Builds 

6802: Space Probe

October 10, 2022October 10, 2022 Master Builder
6716: Weapons Wagon
Cowboys Jørn Thomsen Official Sets Small Builds Western Western Sets 

6716: Weapons Wagon

April 2, 2022July 29, 2023 Master Builder
897: Mobile Missile Command
Classic Space Classic Space Sets Jens Nygaard Knudsen Official Sets Small Builds 

897: Mobile Missile Command

September 14, 2019July 31, 2023 Master Builder
6698: RV with Speedboat
Classic Town Harbor Medium Builds Official Sets Town Town Sets Wrecker 

6698: RV with Speedboat

June 28, 2022June 28, 2022 Master Builder
510: Basic Building Set
Basic Official Sets Small Builds Universal Building Set 

510: Basic Building Set

July 11, 2024July 11, 2024 Master Builder
1694: Galactic Scout
Blacktron II Blacktron II Sets Official Sets Space Very Small Builds 

1694: Galactic Scout

February 9, 2021February 9, 2021 Master Builder
6956: Stellar Recon Voyager
Large Builds M:Tron M:Tron Sets Official Sets Space 

6956: Stellar Recon Voyager

September 23, 2019November 19, 2020 Master Builder
6039: Twin Arm Launcher
Castle Castle Sets Lion Knights Official Sets Small Builds 

6039: Twin Arm Launcher

April 10, 2021April 10, 2021 Master Builder
6278: Enchanted Island
Box Story Islanders Medium Builds Official Sets Pirates Pirates I Pirates Sets 

6278: Enchanted Island

February 20, 2025February 20, 2025 Master Builder
6067: Guarded Inn
Castle Castle Sets Daniel August Krentz Large Builds Lion Knights Official Sets 

6067: Guarded Inn

February 9, 2021July 29, 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.