Angry birds is a game concept that has been around for quite some time. Basically you have to slingshot various different types of birds into a tower, attempting to knock it over crushing, the evil pigs inside of it. Prior to this release, only the first level of the game was made available for free, and users needed to register and pay for the remainder of the game.
The Angry Birds game has sold over 6.5 million copies on Apple devices alone. It was initially released in December of 2009, and cost Rovio approximately €100,000 to create.
