Angry Birds was released by Finnish studio Rovio in 2009 as a mobile puzzle game in which players launch birds from a slingshot to defeat green pigs and clear each stage. The level-complete jingle plays on the results screen, where players see their score and up to three stars, and it became familiar to millions through the game's huge mobile success. As gameplay clips, compilations and short-form videos spread, the short tune was reused as a shorthand for success, and it remains popular because it is instantly recognisable even to viewers who have never played the game.