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 Video Game Nerd was released in North America on April 2, 2015, and released in Europe on December 10, 2015. On June 4, 2015, a 3DS version became available for download in the Nintendo eShop. On July 17 of the same year, during ScrewAttack's annual SGC convention, Freakzone announced a sequel, "Angry Video Game Nerd II: ASSimilation", originally due for release in Winter 2015, but delayed to March 29, 2016. There have also been some unofficial, fanmade Angry Video Game Nerd games including "Angry Video Game Nerd's Angry Video Game", "Angry Video Game Nerd in Pixel Land Blast", "AVGN Game Over", "AVGN Game