Angry Birds is a puzzlevideo game developed by Finnishcomputer game developer Rovio Entertainment that started the Angry Birds franchise. Inspired primarily by a sketch of stylized wingless birds, the game was first released for iOS in December 2009. Since that time, over 12 million copies of the game have been purchased from the iOS App Store, which has prompted the company to design versions for other touchscreen-based smartphones, most notably those using the Android, Symbian, Windows Phone and BlackBerry 10 operating systems. It has since expanded to video game consoles and for PCs.
In the game, players use a slingshot
to launch birds at pigs stationed on or within various structures, with
the intent of killing all the pigs on the playing field. As players
advance through the game, new types of birds become available, some with
special abilities that can be activated by the player. Rovio Mobile has
supported Angry Birds with numerous free updates that add
additional game content, and the company has also released stand-alone
holiday and promotional versions of the game.
Angry Birds has been praised for its successful combination of addictive gameplay, comical style, and low price. Its popularity led to versions of Angry Birds being created for personal computers and gaming consoles, a market for merchandise featuring its characters and even long-term plans for a feature film or television series. With a combined 2 billion downloads, as of January 2014, across all platforms and including both regular and special editions, the game has been called "one of the most mainstream games out right now", "one of the great runaway hits of 2010", and "the largest mobile app success the world has seen so far".
In Angry Birds, the player controls a flock of multi-colored birds that are attempting to retrieve their eggs, which have been stolen by a group of hungry green pigs. On each level, the pigs are sheltered by structures made of various materials such as wood, glass, and stone, and the objective of the game is to eliminate all the pigs on the level. Using a slingshot, players launch the birds with the intent of either hitting the pigs directly or damaging the structures, causing them to collapse and kill the pigs. In various stages of the game, additional objects such as TNT crates, and rocks are found in the structures, and power-ups may be used in conjunction with the birds to kill hard-to-reach pigs.
There are several different types of birds used in the game. In the earliest levels, Red is the only one available. As the player advances through the game, additional types of birds become available. Some birds are effective against particular materials, and some have special abilities that may be activated by the player while the bird is airborne. For example, Chuck speeds up, The Blues separates into three birds, Bomb explodes and Matilda can drop an egg-shaped projectile. The pigs themselves also appear in different sizes. While small pigs are relatively weak and are easily killed either by direct hits or by debris from the damaged structures, larger pigs are able to sustain more damage. In addition, some pigs wear corporals as armor, making them even more resistant to damage.
Each level starts with the number, types, and order of birds pre-determined. If all of the pigs are killed by the time the last bird is used, the level is completed and the next level is unlocked. If the pigs are not killed, the level is incomplete. Points are scored for each pig killed as well as for damage to, or destruction of, structures, and bonus points are awarded for any unused birds. Upon completing each level, players receive one, two, or three stars, depending on the score received. Players may re-attempt unlocked levels as many times as they wish in order to complete them successfully or to earn additional points or stars.
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