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 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",