Angry Birds (video game) featured app on the UK App Store in February 2010 and quickly reached No.1 there, it reached the No. 1 spot on the paid apps chart in the US App Store in the middle of 2010 and then stayed there for 275 days. The initial cost to develop "Angry Birds" was estimated to exceed €100,000, not including costs for the subsequent updates. For the iOS version, Rovio partnered with distributor Chillingo to publish the game to the App Store. Chillingo claimed to have participated in final game polishing, such as adding visible trajectory lines, pinch to zoom, pigs' grunts, birds'
Angry Birds Friends Angry Birds Friends Angry Birds Friends is a puzzle video game and the fourth game in the "Angry Birds" video game series. It is developed and published by Rovio Entertainment. The game was originally an exclusive Facebook game called "Angry Birds Facebook" that was released on February 13, 2012, and was renamed to the current name on May 23, 2012. The Facebook version introduced power-ups to the Angry Birds game series. Android and iOS versions were released on May 2, 2013. On October 27, 2014, Rovio introduced a global league to allow users from around the world to play against