Today Only: Amazon’s newly launch AppStore for Android is offering Rovio’s new release of Angry Birds Rio for FREE (regularly 99-cents) for a limited time. Deal expires March 22, 2011. Angry Birds Rio is an exclusive title for the Amazon AppStore for Android.

Angry Birds Land in Rio
Just when you thought they couldn’t get any angrier, the Angry Birds flock gains new cause for vengeance. Swept away by smugglers to Rio di Janeiro, their captors soon find out that these caged birds don’t sing. It’s time to bring back their unique brand of weaponry–the finger-powered slingshot–and launch the newest adventure in the world’s most popular physics-based casual game.

In the original Angry Birds, this peace-loving flock was hoodwinked by greedy green pigs with a hunger for poached eggs. After the pigs stole their precious eggs, this flock was friendly no more: unleashing an arsenal of angry bird artillery, the avian army smashed through the green pigs and their hideouts. The world pulled the trigger with glee as these ornery birds made bacon out of swine.