Answers.Body: <p>Brickipedia (A.K.A. <a href="http://lego.wikia.com" rel="nofollow noreferrer">lego.wikia.com</a>) list unreleased sets and themes in the form of an <a href="http://lego.wikia.com/wiki/Unreleased_Items" rel="nofollow noreferrer">article</a> and <a href="http://lego.wikia.com/wiki/Category:Unreleased" rel="nofollow noreferrer">category of articles</a>. It does mention <a href="http://lego.wikia.com/wiki/CYBOTS" rel="nofollow noreferrer">CYBOTS</a> and <a href="http://lego.wikia.com/wiki/Europa" rel="nofollow noreferrer">Europa</a> in addition to <a href="http://lego.wikia.com/wiki/Seatron" rel="nofollow noreferrer">Seatron</a>, although there is no guarantee that the list is complete.</p>
  
  <p><strong>CYBOTS</strong></p>
  
  <p><a href="https://i.sstatic.net/zTqrk.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/zTqrk.jpg" alt="Cybot prototype from http://faberfiles.blogspot.com/2012/04/beginning-birth-of-ball-joint.html"></a></p>
  
  <blockquote>
    <p>Contained action figures using both System and the first TECHNIC
    ball joint parts. Several prototype models were created but final
    versions were not made. This theme was made mainly to test the first
    LEGO ball joints, which would be later used three years later on the
    Slizer theme.</p>
  </blockquote>
  
  <p><strong>Europa</strong></p>
  
  <p><img src="https://i.sstatic.net/pzihM.png" alt="enter image description here"></p>
  
  <blockquote>
    <p>Set in the 18th century. The most likely reason that the theme wasn't
    released is that it was too close to both Castle and Pirates, both
    very similar themes.</p>
  </blockquote>
  
  <p><strong>Seatron</strong>
  <img src="https://i.sstatic.net/ll5BX.png" alt="enter image description here"></p>
  
  <blockquote>
    <p>The theme would have been set on an alien planet, with underwater
    astronauts. Many new monorail parts and colours were made for this
    theme, but when Futuron's monorail failed to make money, development
    of Seatron stopped.</p>
  </blockquote>
  
  <p><strong>Unnamed prototypes</strong></p>
  
  <p>Here's a space theme using purple and trans neon green from 1989:</p>
  
  <p><a href="https://i.sstatic.net/fDiMy.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/fDiMy.jpg" alt="Purple + Trans neon green space"></a></p>
  
  <p>And another 1989 space prototype with a distinctive color scheme using both light and dark gray with trans-red elements (dark gray would have been a new color at the time):</p>
  
  <p><a href="https://i.sstatic.net/mL8DI.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/mL8DI.jpg" alt="Red and gray space"></a></p>
  
  <p>Brickipedia has a similar list for <a href="http://lego.wikia.com/wiki/Prototype" rel="nofollow noreferrer">prototype sets and themes</a>.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2013-01-08T17:26:29.023Z
Answers.LastActivityDate: 2017-01-19T19:55:55.537Z
Answers.LastEditDate: 2017-01-19T19:55:55.537Z
Answers.UserDisplayName: Ambo100
Body: <p>I recently discovered the unreleased "Seatron" theme as I was looking around for building ideas. After some searching, I also found the unreleased Europa theme which seems to be set in the 1700s and has elements of both Castle and Pirates.</p>
  
  <p>Are there other unreleased or prototype themes and sets?</p>
  
Tags: <history><theme>
Title: List of prototype or unreleased themes
UserDisplayName: jncraton
ThreadText: # List of prototype or unreleased themes
  
  (Asked by: username_0 on 2013-01-08)
  
  I recently discovered the unreleased "Seatron" theme as I was looking around for building ideas. After some searching, I also found the unreleased Europa theme which seems to be set in the 1700s and has elements of both Castle and Pirates.
  
  Are there other unreleased or prototype themes and sets?
  
  **Tags:** history, theme
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2013-01-08. Score: 13 | Accepted answer
  
  Brickipedia (A.K.A. [lego.wikia.com](http://lego.wikia.com)) list unreleased sets and themes in the form of an [article](http://lego.wikia.com/wiki/Unreleased_Items) and [category of articles](http://lego.wikia.com/wiki/Category:Unreleased). It does mention [CYBOTS](http://lego.wikia.com/wiki/CYBOTS) and [Europa](http://lego.wikia.com/wiki/Europa) in addition to [Seatron](http://lego.wikia.com/wiki/Seatron), although there is no guarantee that the list is complete.
  
  **CYBOTS**
  
  [![Cybot prototype from http://faberfiles.blogspot.com/2012/04/beginning-birth-of-ball-joint.html](https://i.sstatic.net/zTqrk.jpg)](https://i.sstatic.net/zTqrk.jpg)
  
  > Contained action figures using both System and the first TECHNIC
  > ball joint parts. Several prototype models were created but final
  > versions were not made. This theme was made mainly to test the first
  > LEGO ball joints, which would be later used three years later on the
  > Slizer theme.
  
  **Europa**
  
  ![enter image description here](https://i.sstatic.net/pzihM.png)
  
  > Set in the 18th century. The most likely reason that the theme wasn't
  > released is that it was too close to both Castle and Pirates, both
  > very similar themes.
  
  **Seatron**
  ![enter image description here](https://i.sstatic.net/ll5BX.png)
  
  > The theme would have been set on an alien planet, with underwater
  > astronauts. Many new monorail parts and colours were made for this
  > theme, but when Futuron's monorail failed to make money, development
  > of Seatron stopped.
  
  **Unnamed prototypes**
  
  Here's a space theme using purple and trans neon green from 1989:
  
  [![Purple + Trans neon green space](https://i.sstatic.net/fDiMy.jpg)](https://i.sstatic.net/fDiMy.jpg)
  
  And another 1989 space prototype with a distinctive color scheme using both light and dark gray with trans-red elements (dark gray would have been a new color at the time):
  
  [![Red and gray space](https://i.sstatic.net/mL8DI.jpg)](https://i.sstatic.net/mL8DI.jpg)
  
  Brickipedia has a similar list for [prototype sets and themes](http://lego.wikia.com/wiki/Prototype).
  
  
  ---
  
  