While I was looking around for something to use on my website, a thought occurred to me about why use a serial key to unlock the game when a very simple usb unlock feature could be used instead which would get rid of having the game use the internet.
Once you plug he usb key in to your usb port the game will immediately unlock itself when you start the game, if you don't have the usb key in, the game stays in demo mode.
The USB could be encrypted which would disallow coping...or who knows, by tech level is about a 1, so I have no idea how you would do it.
If you buy the Hardcopy, you get the box, a USB key, the excellent Manual, and all the extras I am dieing get my hands on....

Just a thought.
I hope I'm not getting on anyone's nerves here, if so send me a PM, and I'll stop.
later!