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 4825 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

6592 – Back D

June 23, 2025June 23, 2025 Master Builder

6042 – Back A

October 1, 2024October 1, 2024 Master Builder

1731 – Back C

April 6, 2020August 1, 2023 Master Builder

6562 – Back D

August 31, 2022September 19, 2022 Master Builder

6641 – Back D

May 9, 2026May 13, 2026 Master Builder

7411 – Back A

December 16, 2025December 16, 2025 Master Builder

EXPLORE MORE OFFICIAL SETS

6277: Imperial Trading Post
Extra Large Builds Imperial Guards Official Sets Pirates Pirates I Pirates Sets 

6277: Imperial Trading Post

January 6, 2022January 6, 2022 Master Builder

Year Released: 1992BricklinkInstructions

1793: Space Station Zenon
Large Builds Official Sets Space Unitron Unitron Sets 

1793: Space Station Zenon

April 19, 2021April 19, 2021 Master Builder
8593: Makuta
Alternate Instructions Included BIONICLE BIONICLE Sets Instructions Added Medium Alt Build Medium Builds Official Sets Titans 

8593: Makuta

April 23, 2026April 23, 2026 Master Builder
6100: Aquashark Dart
Aquashark Aquazone Aquazone Sets Official Sets Very Small Builds 

6100: Aquashark Dart

March 20, 2023March 21, 2023 Master Builder
6874: Moon Rover
Classic Space Classic Space Sets Official Sets Small Builds Space 

6874: Moon Rover

November 6, 2023November 6, 2023 Master Builder
1906: Majisto’s Tower
Box Plus Castle Castle Sets Dragon Knights Medium Builds Official Sets Playscape/Play Stage Box 

1906: Majisto’s Tower

August 1, 2023October 8, 2024 Master Builder
6097: Night Lord’s Castle
Box Story Castle Castle Sets Extra Large Builds Fright Knights Official Sets 

6097: Night Lord’s Castle

March 1, 2023March 17, 2025 Master Builder
6651: Post Office Van
Classic Town Official Sets Post Office Small Builds Town Town Sets 

6651: Post Office Van

February 3, 2021February 3, 2021 Master Builder
6847: Space Dozer
ABCs Classic Space Classic Space Sets Official Sets Small Builds Space 

6847: Space Dozer

January 29, 2025April 10, 2025 Master Builder
6770: Lunar Transporter Patroller
Futron Sets Futuron Medium Builds Official Sets Space 

6770: Lunar Transporter Patroller

September 11, 2023September 11, 2023 Master Builder
6907: Sonic Stinger
ABCs Insectoids Insectoids Sets Official Sets Small Builds Space 

6907: Sonic Stinger

October 3, 2024March 22, 2025 Master Builder
6824: Space Dart I
Classic Space Classic Space Sets Official Sets Very Small Builds 

6824: Space Dart I

September 30, 2019October 6, 2019 Master Builder
6190: Shark’s Crystal Cave
Aquashark Aquazone Aquazone Sets Large Builds Official Sets 

6190: Shark’s Crystal Cave

July 13, 2021January 20, 2022 Master Builder
6955: Space Lock-Up Isolation Base
Box Marketing Blurb Large Builds Official Sets Space Space Police I Space Police I Sets 

6955: Space Lock-Up Isolation Base

February 3, 2021April 3, 2024 Master Builder
2532: Aircraft and Ground Crew
Airport Classic Town Medium Builds Official Sets Town Town Sets 

2532: Aircraft and Ground Crew

December 28, 2021December 28, 2021 Master Builder
8927: Toa Terrain Crawler
BIONICLE BIONICLE Sets Extra Large Builds Official Sets Playsets 

8927: Toa Terrain Crawler

March 3, 2026March 3, 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.