Crackdown 2 arrives in stores Friday, the new sandbox action game to the Scots Ruffian Games. For those who are willing to buy, developers have prepared a nice surprise: a puzzle game playable via Facebook that will allow you to get ducks for use in explosive multiplayer title.

To get you just accept the application accessible from this link in your Facebook profile and then connect your Windows Live ID to allow recognition of the Gamertag. Without this, all the ducks-bomb that will win in the game will become available in the Xbox 360. Enjoy!