Angry Birds downloaded 6.5M times on Christmas Day Millions more flock to Rovio's downloadable physics-based puzzle game during recent holiday; mobile app analytics firm declares 6.8M new iOS ...

Angry Birds Rio is a puzzle video game developed by Rovio Mobile. The game was released as a marketing tie-in with the 20th Century Fox animated film Rio, and was promoted along with the movie.

Angry Birds ’ gameplay may be its most critical feature. To attack the pigs, birds must be launched at the pigs’ structures via a slingshot.