I meant to post this earlier, but it slipped my mind. A fan by the name of John Fowler has undertaken the creation of a CAD video game fan project, and I believe a few others have offered their assistance.

I’m not involved, but I have checked out the screens and I’ve gotta say, it looks pretty neat so far. There’s a thread going in our forum about it as well.

Note: It should be mentioned that the game is still in what I would consider the alpha stages of development, so don’t download it expecting a finished product.

Update: Ok, the bandwidth on the site they were using has been exceeded. I’ve removed the links to the site, but the forum thread is still there.