user3327: Kung Fu Chess, a chess variant in which there are no turns (everyone can move at once with a time delay for each piece), began in 2002 by Shizmoo games, and the website suddenly went offline in 2008 despite a large following and many proficient players.
Is the reason for their sudden demise known and are there present day alternatives to kung fu chess?

user4393: judochess.com is the new tempest chess website, there are some highly skilled players but servers sometimes lag

user16135: I just launched a remake of Kung Fu Chess at https://www.kfchess.com/. Check it out and let me know what you think!

user2130: No reason for Shizmoo's site closure in 2008 has been published online that I could find. There is a forum for former Kung Fu Chess enthusiasts here, but it's not particularly busy at the moment: http://www.zenchess.com/forum/
A few turnless/live chess variations inspired by Kung Fu Chess have sprung up, though, notably:
Ninja Chess for iPad
http://www.nordlysa.com/ninjachess/
Two players, iOS.

Real Time Chess
http://play.svenardo.com/chess/
One-player vs computer, in-browser, iPad, Mac and Windows, where the first player to capture the king wins. Moved pieces cannot be moved again until their timer completes.

JebChess
http://jebchess.com/
A four-player live version.


3327: <p>Kung Fu Chess, a chess variant in which there are no turns (everyone can move at once with a time delay for each piece), began in 2002 by Shizmoo games, and the website suddenly went offline in 2008 despite a large following and many proficient players.</p>

<p>Is the reason for their sudden demise known and are there present day alternatives to kung fu chess?</p>
 4393: <p>judochess.com is the new tempest chess website, there are some highly skilled players but servers sometimes lag</p>
 16135: <p>I just launched a remake of Kung Fu Chess at <a href="https://www.kfchess.com/" rel="noreferrer">https://www.kfchess.com/</a>. Check it out and let me know what you think!</p>
 2130: <p>No reason for Shizmoo's site closure in 2008 has been published online that I could find. There is a forum for former Kung Fu Chess enthusiasts here, but it's not particularly busy at the moment: <a href="http://www.zenchess.com/forum/" rel="noreferrer">http://www.zenchess.com/forum/</a></p>

<p>A few turnless/live chess variations inspired by Kung Fu Chess have sprung up, though, notably:</p>

<h3>Ninja Chess for iPad</h3>

<p><a href="http://www.nordlysa.com/ninjachess/" rel="noreferrer">http://www.nordlysa.com/ninjachess/</a></p>

<p>Two players, iOS.</p>

<p><img src="https://i.stack.imgur.com/0CTF8.png" alt="Ninja Chess"></p>

<h3>Real Time Chess</h3>

<p><a href="http://play.svenardo.com/chess/" rel="noreferrer">http://play.svenardo.com/chess/</a></p>

<p>One-player vs computer, <a href="http://play.svenardo.com/chess/" rel="noreferrer">in-browser</a>, <a href="https://itunes.apple.com/us/app/realtime-chess-new-chess-experience/id687203498?mt=8" rel="noreferrer">iPad</a>, <a href="https://www.dropbox.com/s/d7dwbq4aukgtsht/Realtime%20Chess.zip" rel="noreferrer">Mac</a> and <a href="https://mega.co.nz/#!1wdUiCQZ!LmVCHEoKTV25JnV2d3YAamssMXBgUWh2T-Hk5OvhYBw" rel="noreferrer">Windows</a>, where the first player to capture the king wins. Moved pieces cannot be moved again until their timer completes.</p>

<p><img src="https://i.stack.imgur.com/9tfnt.png" alt="Real Time chess game"></p>

<h3>JebChess</h3>

<p><a href="http://jebchess.com/" rel="noreferrer">http://jebchess.com/</a></p>

<p>A four-player live version.</p>

<p><img src="https://i.stack.imgur.com/2OU72.png" alt="Jebchess"></p>
