Angry Birds (video game) was being played, the staff liked the characters, and the team elected to design a game around them. In early 2009, physics games, such as "Crush the Castle", were popular flash-based web games, so the Rovio team was inspired by these games. During the development of "Angry Birds", the staff realized the birds needed an enemy. At the time, the "swine flu" epidemic was in the news, so the staff made the birds' enemies pigs. Angry Birds was the studio's 52nd produced game and on its initial release, the game did not sell many copies. After Angry Birds was a
Angry Birds (video game) Angry Birds (video game) Angry Birds (later remarketed as Angry Birds Classic) is a 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 has prompted the company to design versions for other touchscreen-based smartphones, most notably those using the Android, Symbian, Windows Phone and BlackBerry 10 devices. The series has since expanded to include titles for dedicated video game consoles