Angry Birds is an action-based media franchise created by the Finnish company Rovio Entertainment. The series focuses on multi-colored birds that try to save their eggs from green-colored pigs, their enemies. Inspired by Crush the Castle, the game has been praised for its successful combination of fun gameplay, comical style, and low price. Its popularity led to many spin-offs; versions of Angry Birds created for PCs and video game consoles, a market for merchandise featuring its characters, Angry Birds Toons, a televised animated series, and two films; The Angry Birds Movie and its sequel The Angry Birds Movie 2. By January 2014, there had been over 2 billion downloads across all platforms, including both regular and special editions.By July 2015, the series' games had been downloaded more than 3 billion times collectively, making it the most downloaded freemium game series of all time. The original Angry Birds has been called one of the most mainstream games out right now, one of the great runaway hits of 2010, and the largest mobile app success the world has seen so far. The first main-series video game sequel, Angry Birds 2, was released on 30 July 2015.The first game in the series was initially released in December 2009 for iOS. At the time, the swine flu epidemic was in the news, so the staff decided to use pigs as the enemies of the birds. The company released ports of the game to other touchscreen smartphone operating systems, including Android, Symbian, and Windows Phone, and PCs.