Just wanted to comment, this definitely does not happen. I purchased the game after installing the demo and it does not unlock and no unlock code is provided. The only way to make it work is by clicking on the red Customer Support letters at the top of the initial start up screen where you have the option to play the demo or purchase. This takes you to a screen where you enter your order number and password and it will unlock the game. Really wish you guys would straighten this out as its pretty poorly handled. No unlock key is provided in any email, its not shown on the invoice, and the only way to make the game a full version is a little silly.