Animated Treasure Chest Project.

Hi All - This is a pretty simple concept that involves users paying small amounts ($.25 or so) to open up a treasure chest which has a scroll in it with a message on it. The message on the scroll will be randomly chosen from a database that I will seed. There will also be a coin in the treasure chest. The scroll and the coin will have secret codes on them. If the codes match, this will mean that the user has won a bigger treasure and we will make the animated scene do something to indicate this. So the key pieces are *payment processing (thinking amazon simple payments), *Random selection of messages and codes from a database, and *cool animation for the treasure chest and how it opens and displays the scroll, the coin, etc. I don't have a particular technology / platform that I need to have this built on - but I will need to use Facebook connect to post and share and the animation needs to be good. I am open to discussing a rapid prototype before moving on to the full project as well. Let me know your thoughts! Thanks.