Angry Birds (later remarketed as Angry Birds Classic) is a 2009 casual puzzle video game developed by Rovio Entertainment.

 Inspired primarily by a sketch of stylized wingless birds, the game was first released for IOS and Maemo devices in December 2009.

 Since that time, over 12 million copies of the game have been purchased from the IOS App Store, which prompted the developer to design versions for other touchscreen-based 

smartphones, most notably Android, Symbian, Windows Phone, and BlackBerry 10 devices.

 The series has since expanded to include titles for dedicated video game consoles and PCs.