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 POP! Angry Birds POP! Angry Birds POP! is a tile matching game co-developed by Rovio Entertainment and Outplay Entertainment that was soft launched for iOS in Canada in December 2014 and released worldwide for iOS and Android devices in March 2015. The game was originally the second game in the "Angry Birds Stella" series. It was originally released as "Angry Birds Stella POP!", and was given its current name, without Stella, with an update in July 2015 that added classic Angry Birds characters to the game. In October 2015, the game was released as a Facebook game that was discontinued on