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 to project an advertisement for its new N8 handset that included the game's characters. A June 2011 T-Mobile advertisement filmed in Barcelona, Spain included a real-life mock-up of the game in a city plaza, while Nokia used the game in Kuala Lumpur, Malaysia to promote an attempt to set a world record for the largest number of people playing a single mobile game. Finnair has also used Angry Birds in their advertising, including taping an Airbus A340 airliner with the Angry Birds figures and holding an Angry Birds tournament on board a flight to Singapore. Rovio has also prepared a