The playerbase dwindled to nothing and I wanted a different challenge so I shuttered it. Over the years many people worked on it and while I'm sure they wouldn't mind if I put it up on github, I've lost contact with many of them so I don't feel right releasing it, so it's just in the bitbin of history.
Now I'm working on a 2D version of it, which adds a whole new dimension to the challenge. Once I have something more than just random prototypes I do plan on putting it up. But it's slow going - I have a job and kids, so I get about 1 hour per day to work on it.