Programmers: Thoughts on this AI game where you fight via code?

I’ve stumbled upon this cool game (didn’t work in Safari, but did in Firefox) that’s in development. Essentially you write the code for the AI and then your “bots” fight the computer’s bots. You have no control over the game once you run the simulation.

I’m teaching myself a bit of JavaScript so I can mess around with it in the browser. Anyone willing to give it a go and share their code/thoughts?