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 Rio Angry Birds Rio Angry Birds Rio is the third puzzle video game in the "Angry Birds" series, developed and published by Rovio Mobile. Based on "Angry Birds", "Angry Birds Rio" was released for devices using Apple's iOS and Mac OS X, as well as Google's Android in March 2011. The game was released as a marketing tie-in with the 20th Century Fox and Blue Sky Studios animated films "Rio" and "Rio 2", and was promoted with those movies. While utilizing the same basic gameplay as the original game, "Angry Birds Rio" added a number of new elements, most notably the