I am so pissed off right now, because I'm not a Mac user.
Unity3D is the tool I've wanted Second Life to be for three years now, and I'm barred from playing with it because I use a PC. Aurgh!!!
Anyway, I'm posting this here, because Unity3D really does look like the kind of tool that one could use to design their own virtual world with. Has anyone else heard of it? Has anyone else used it?