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 2 Angry Birds 2 Angry Birds 2 is a 2015 puzzle video game developed by Rovio Entertainment as the twelfth game in the "Angry Birds" series, and is the direct sequel to the original "Angry Birds". It is free-to-play with optional purchases for in-game currency. The gameplay features a new bird named Silver, spells instead of power-ups and gameplay occurs in multi-stage levels. It was soft-launched in Canada on March 5, 2015, as "Angry Birds Under Pigstruction", released for iOS and Android worldwide on July 30, 2015, and the name was changed to "Angry Birds 2". Like the original "Angry Birds",