First released on December 11, 2009, Angry Birds is a puzzle video game developed by Finnish computer game developer Rovio Entertainment that began the Angry Birds franchise . Inspired primarily by a sketch of stylized wingless birds, the game was first released for iOS and Maemo. 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. The series has since expanded to include titles for dedicated video game consoles and for PCs.
The game's popularity has spawned knock-off and parody games that utilize the same basic mechanics as Angry Birds . For example, Angry Turds features monkeys hurling feces and other objects at hunters who have stolen their babies.  Another game, entitled Chicks'n'Vixens and released in beta form on Windows Phone devices, replaces the birds and pigs with chickens and foxes, respectively.  The developer of Chicks'n'Vixens intended the game as a challenge to Rovio Mobile, which stated at the time that a Windows Phone port of Angry Birds would not be ready until later in 2011.  The Angry Birds theme song ( Balkan Blast Remix ) and its characters appear in Just Dance 2016 .