Just found this site after some surfing from a tweet by Notch (Minecraft dev), and I must say I'm really excited about this project. Sure hope you manage to finish this. After getting the latest update from chrome (it seems to be extremely recent!), I managed to load the "game", and can move around the camera as advertised (although to be picky, I'd say the mousewheel changes the elevation rather than zoom). It seems to stop loading textures at 12/14 though. Other than that, it's really impressive what you've managed to do in a few days. Keep it up!