Angry Birds, an iPhone Game App, made its debut on December 10, 2009. Developed by Rovio and sold by Clickgamer Technologies, this single player puzzle game has sold over 6.5 million copies. It is the number one iPhone paid game app in the United States as well as many other countries.
The plot of the game involves evil green pigs who have stolen eggs from the birds. The Angry Birds get revenge by using a slingshot to shoot themselves at the pigs’ fortified castles. The player needs to control the slingshot, trying to destroy the castles and the little pigs. To destroy the castles, players need to aim the slingshot at the right angle and with the correct intensity in order to break through the weak spots in the castles. They receive points for destroying bits of the castle, with an additional 10,000 bonus points given for each unused bird.
The game starts with red birds, but as it progresses, other types of birds with different abilities become unlocked. By tapping on the screen when the birds are flying, the abilities become activated. The blue birds will separate into three smaller birds, yellow birds increase speed, black birds explode, white birds drop egg-shaped bombs, green birds act like boomerangs as they go back and fly in the opposite direction, and purple birds are similar to the red but are bigger and do more damage. The pigs also have different abilities and appear in different sizes.
To complete a level, all of the pigs must be defeated before the birds are all gone. As levels are completed, new levels are unlocked. The current version has 180 levels.
Angry Birds has been updated several times since its release. Version 1.4.1 was released on August 30, 2010. The new version added 15 reconstructed levels, a new golden egg, new achievements, and more fun. It is compatible with the iPhone, iPod Touch, and iPad running iOS 3.0 or higher.
Angry Birds is inexpensive, selling for only $0.99. There is also a free, limited version. The free version has been downloaded from the App Store 11 million times. The paid version has been downloaded 7 million times.