Download Free Angry Birds Rio for PC! This promo is valid until  September 29, 2011 only! All you have to do is  to visit this website, Appup.com, download and install Intel AppUp. Register with Intel AppUpSM Center, by the way this promo is for new registrants only. Search for the Angry Birds Rio game and download it on your PC – then help the birds help their friends from the film Rio. :)