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 Instructions Added Medium Alt Build Medium Builds 

6175 – Back D

February 28, 2025March 3, 2025 Master Builder 4819 Views

From: 6175: Crystal Explorer Sub
Name: Deep Sea Outpost 1
Instructions: View PDF | Download .io File

Contributions

  1. Name, PDF, and .io file submitted on February 28, 2025 by: Welcome Bricks
  • ← 1415 – Back A
  • Kabaya: Town Space Port →

You May Also Like

6849 – Back A

January 13, 2021January 13, 2021 Master Builder

7257 – Back B

March 1, 2023March 3, 2023 Master Builder

6738: Skateboard Challenge

April 13, 2026April 13, 2026 Master Builder

6558 – Back C

December 29, 2021December 29, 2021 Master Builder

1491 – Back B

October 11, 2021October 28, 2021 Master Builder

6851 – Back A

October 24, 2019October 25, 2021 Master Builder

EXPLORE MORE OFFICIAL SETS

6556: Scuba Squad
Divers Official Sets Small Builds Town Town Sets 

6556: Scuba Squad

June 28, 2022June 28, 2022 Master Builder

Year Released: 1997BricklinkInstructions

5810: Vanity Fun
Belville Belville Sets Lion Knights Official Sets Playhouse Very Small Builds 

5810: Vanity Fun

April 10, 2021April 10, 2021 Master Builder
375-2 (6075-2): Castle
ABCs Castle Castle Sets Classic Castle Daniel August Krentz Different Set Numbers Duplicate Set Number Extra Large Builds Official Sets 

375-2 (6075-2): Castle

November 8, 2019September 5, 2025 Master Builder
1978: Build-A-Santa Polybag
Holiday and Event Holiday and Event Sets Official Sets Small Builds 

1978: Build-A-Santa Polybag

April 28, 2023April 28, 2023 Master Builder
6592: Vacation Hideaway (Weekend Cottage)
Building Classic Town Official Sets Small Builds Town Town Sets 

6592: Vacation Hideaway (Weekend Cottage)

June 23, 2025June 23, 2025 Master Builder
1596: Ghostly Hideout
Castle Castle Sets Official Sets Very Small Builds Wolfpack 

1596: Ghostly Hideout

July 25, 2024July 25, 2024 Master Builder
7146: TIE Fighter
Episode IV/V/VI Medium Builds Official Sets Star Wars Star Wars Sets 

7146: TIE Fighter

February 19, 2025February 19, 2025 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
6060: Knight’s Challenge
Castle Castle Sets Lion Knights Medium Builds Official Sets 

6060: Knight’s Challenge

July 2, 2024October 1, 2024 Master Builder
4500: Rebel Snowspeeder
Episode II Episode IV/V/VI Medium Builds Official Sets Star Wars Star Wars Sets 

4500: Rebel Snowspeeder

April 9, 2020April 9, 2020 Master Builder
1558: Mobile Command Trailer
Classic Space Classic Space Sets Official Sets Small Builds Space 

1558: Mobile Command Trailer

December 18, 2021December 18, 2021 Master Builder
4910: Hover Scout
Official Sets Rock Raiders Rock Raiders Sets Very Small Builds 

4910: Hover Scout

March 1, 2023March 1, 2023 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
6359: Horse Trailer
Classic Town Medium Builds Official Sets Recreation Town Town Sets 

6359: Horse Trailer

October 8, 2024October 8, 2024 Master Builder
7119: Twin-Pod Cloud Car
Episode IV/V/VI Official Sets Small Builds Star Wars Star Wars Sets 

7119: Twin-Pod Cloud Car

February 26, 2023February 26, 2023 Master Builder
4704: The Chamber of the Winged Keys
Harry Potter Harry Potter Sets Medium Builds Official Sets Sorcerer's Stone 

4704: The Chamber of the Winged Keys

May 28, 2024May 28, 2024 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.