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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
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    • 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

Sea-Tron

ABCs Concepts and Prototypes Sea People Sea-Tron Space 

Sea People

February 12, 2025February 12, 2025 Master Builder 6475 Views

MiscTheme: Seatron, Aquadome *Alternate Build Connection: Aquazone BrickJournal: Issue 6 Volume 2 – Page 43TwoMorrows PublishingPhoto Credit: Niels Milan Pedersen’s personal

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ABCs Concepts and Prototypes Sea People Sea-Tron Space 

Aquadome

February 11, 2025February 18, 2025 Master Builder 7131 Views

MiscTheme: Seatron, Sea People *Alternate Build Connection: Aquazone, 6195: Neptune Discovery Lab (Aqua Dome 7), 6199: Hydro Crystalization Station LEGO®

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ABCs Concepts and Prototypes Sea People Sea-Tron Space 

Seatron

February 23, 2023February 12, 2025 Master Builder 7238 Views

MiscTheme: Seatron, Sea People, Aquadome *Alternate Build Connection: Aquazone BrickJournal: Issue 6 Volume 2 – Page 43TwoMorrows PublishingPhoto Credit: Niels

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Concepts and Prototypes Sea People Sea-Tron Space 

BrickJournal Issue 6 Volume 2 Page 43 – Proto 1

February 23, 2023August 15, 2023 Master Builder 6225 Views

BrickJournal Issue 6 Volume 2TwoMorrows PublishingPhoto Credit: Niels Milan Pedersen’s personal LEGO archives

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Concepts and Prototypes Sea People Sea-Tron Space 

BrickJournal Issue 6 Volume 2 Page 43 – Concept 1

February 23, 2023August 15, 2023 Master Builder 3602 Views

BrickJournal Issue 6 Volume 2TwoMorrows PublishingPhoto Credit: Niels Milan Pedersen’s personal LEGO archives

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EXPLORE MORE OFFICIAL SETS

6750: Sonic Robot
Classic Space Classic Space Sets Official Sets Small Builds 

6750: Sonic Robot

September 22, 2019September 28, 2019 Master Builder

Year Released: 1986Bricklink

6511: Rescue Runabout
Classic Town Fire Official Sets Town Town Sets Very Small Builds 

6511: Rescue Runabout

May 10, 2022May 10, 2022 Master Builder
6078: Royal Drawbridge
Castle Castle Sets Daniel August Krentz Large Builds Official Sets Royal Knights 

6078: Royal Drawbridge

January 12, 2022July 29, 2023 Master Builder
1509: Town Value Pack
Bonus/Value Pack Sets Bonus/Value Packs Official Sets Race Small Builds Town 

1509: Town Value Pack

October 8, 2024October 8, 2024 Master Builder
6423: Tow-away Truck
Official Sets Town Town Jr Town Sets Very Small Builds Wrecker 

6423: Tow-away Truck

July 10, 2026July 10, 2026 Master Builder
924 (487): Space Cruiser
Classic Space Classic Space Sets Different Box Versions Different Set Numbers Jens Nygaard Knudsen LL Link Medium Builds Official Sets Space 

924 (487): Space Cruiser

January 25, 2022October 17, 2024 Master Builder
7143: Jedi Starfighter
Episode II Medium Builds Official Sets Star Wars Star Wars Sets 

7143: Jedi Starfighter

December 29, 2021December 29, 2021 Master Builder
6235: Buried Treasure
Official Sets Pirates Pirates I Pirates Sets Very Small Builds 

6235: Buried Treasure

May 23, 2022May 23, 2022 Master Builder
1380: Werewolf Ambush
Official Sets Small Builds Studio Sets Studios 

1380: Werewolf Ambush

December 16, 2025December 16, 2025 Master Builder
6246: Crocodile Cage
Islanders Official Sets Pirates Pirates I Pirates Sets Small Builds 

6246: Crocodile Cage

January 26, 2022January 26, 2022 Master Builder
6903: Bug Blaster
Insectoids Insectoids Sets Official Sets Space Very Small Builds 

6903: Bug Blaster

October 4, 2024October 4, 2024 Master Builder
6414: Dolphin Point
Medium Builds Official Sets Paradisa Town Town Sets 

6414: Dolphin Point

January 14, 2021December 17, 2025 Master Builder
1876: Soil Scooper
Bonus/Value Pack Sets Classic Town Official Sets Small Builds Town Town Sets Traffic 

1876: Soil Scooper

October 11, 2021September 7, 2023 Master Builder
7300 (1414, 7308, Kabaya: Life On Mars 1): Double Hover
Life on Mars Life on Mars Sets Official Sets Very Small Builds 

7300 (1414, 7308, Kabaya: Life On Mars 1): Double Hover

February 24, 2025February 25, 2025 Master Builder
1620: Astro Dart
Bjarne Tveskov Bonus/Value Pack Sets Futron Sets Futuron Official Sets Space Very Small Builds 

1620: Astro Dart

September 6, 2023September 7, 2023 Master Builder
1657: Bird
Basic Set Duplo Duplo Sets Official Sets Very Small Builds 

1657: Bird

December 28, 2021December 29, 2021 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.

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