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 Aquanauts Aquazone Aquazone Alternate Builds Small Builds 

1728 (6145) – Back B

August 1, 2023August 1, 2023 Master Builder 4976 Views

From: 1728 (6145): Crystal Crawler {with Aqua Playscape}
Name: TBD
Submitted by: USER
Instructions:

  • ← 1728 (6145) – Back A
  • 1728 (6145) – Back C →

You May Also Like

371-3 – Back A

October 8, 2024October 8, 2024 Master Builder

6180 – Back C

February 18, 2025February 18, 2025 Master Builder

770 – Back B

September 15, 2022February 14, 2024 Master Builder

1728 (6145) – Back D

August 1, 2023August 1, 2023 Master Builder

6563 – Back B

July 20, 2022July 20, 2022 Master Builder

6067 – Inside B

February 9, 2021July 12, 2023 Master Builder

EXPLORE MORE OFFICIAL SETS

6850: Auxiliary Patroller
Bjarne Tveskov Futron Sets Futuron Official Sets Small Builds 

6850: Auxiliary Patroller

September 24, 2019July 29, 2023 Master Builder

Year Released: 1989Designer: Bjarne TveskovBricklinkInstructions

6668: Recycle Truck
Classic Town Official Sets Small Builds Town Town Sets Traffic 

6668: Recycle Truck

November 18, 2020November 18, 2020 Master Builder
6503: Sprint Racer
Official Sets Race Town Town Sets Very Small Builds 

6503: Sprint Racer

July 9, 2022July 9, 2022 Master Builder
6515: Stunt Copter
Airport Classic Town Official Sets Town Town Sets Very Small Builds 

6515: Stunt Copter

February 2, 2022February 2, 2022 Master Builder
6959: Lunar Launch Site
Jørn Thomsen Large Builds Official Sets Spyrius Spyrius Sets 

6959: Lunar Launch Site

April 27, 2020July 29, 2023 Master Builder
1795 – Side R
Bonus/Value Packs Imperial Guards Official Sets Pirates Pirates Alternate Builds Pirates I Small Builds 

1795 – Side R

March 30, 2026March 30, 2026 Master Builder
6483: Coastal Patrol
Classic Town Large Builds Official Sets Police Town Town Sets 

6483: Coastal Patrol

December 29, 2021December 29, 2021 Master Builder
6199: Hydro Crystalization Station
ABCs Aquazone Aquazone Sets Box Story Extra Large Builds Hydronauts Official Sets Stingrays 

6199: Hydro Crystalization Station

February 18, 2025February 18, 2025 Master Builder
6814: Ice Tunnelator
Ice Planet 2002 Ice Planet 2002 Sets Jørn Thomsen Official Sets Space Very Small Builds 

6814: Ice Tunnelator

April 6, 2020April 2, 2025 Master Builder
6560: Diving Expedition Explorer
Divers Extra Large Builds Official Sets Town Town Sets 

6560: Diving Expedition Explorer

April 3, 2022April 3, 2022 Master Builder
6718: Raindance Ridge (Rain Dance Ridge)
Indians Jørn Thomsen Official Sets Small Builds Western Western Sets 

6718: Raindance Ridge (Rain Dance Ridge)

August 4, 2020July 29, 2023 Master Builder
6897: Rebel Hunter
ABCs Jørn Thomsen Medium Builds Official Sets Space Space Police II Space Police II Sets 

6897: Rebel Hunter

January 23, 2022February 11, 2025 Master Builder
4544: Car Transport Wagon with Car
9V Medium Builds Official Sets Town Train Train Sets 

4544: Car Transport Wagon with Car

September 18, 2026September 18, 2026 Master Builder
385-2: Build-N-Store Chest
Basic Official Sets Small Builds Universal Building Set 

385-2: Build-N-Store Chest

September 8, 2025September 8, 2025 Master Builder
6883: Terrestrial Rover
Classic Space Classic Space Sets Official Sets Small Builds Space 

6883: Terrestrial Rover

October 22, 2019October 21, 2024 Master Builder
4565: Freight and Crane Railway
9V Extra Large Builds Official Sets Town Train Train Sets 

4565: Freight and Crane Railway

January 5, 2026January 5, 2026 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.