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 retail store somewhere in China, considered the game's fastest-growing market. Merchandise has been successful, with 45% of Rovio's revenues in 2012 coming from branded merchandise. The most notable toys are the Telepods, created by Hasbro. These figures are created for "Angry Birds Star Wars II", "Angry Birds Go!", Angry Birds "Stella", and Angry Birds "Transformers". Telepods use a similar digital toy hybrid concept as Skylanders or Disney Infinity characters, but there is a different technology behind it. These are figures used to "teleport" a character of the corresponding figure into the game by scanning a tiny QR code via the