Click here to play with the prototype.
I have just updated the Gyruss clone to make it run more consistently across a wide variety of browser/platform combinations, and also to allow for more intense action if need be. I used this technique from 8-Bit Rocket, and in my linked prototype the game runs at a consistent ~30 frames per second. If you let it run for a minute, eventually there will be 100 enemies swirling around shooting at you. One caveat: I tried playing this on an old POS Mac OSX laptop, and it crashed the browser so severely that I had to give it the 3-finger salute to the the OS back.
I took a couple of weeks off of thinking about this thing to do some playing with various cellular automata experiments. The links to these are below:
Langtons's Ant
Langtons's Ant Hexagon pattern
Langtons's Ant 3d pattern
Random 2d cellular automata
Enjoy!