 In early 2010, Rovio began developing a version of Angry Birds for Facebook. The project became one of the company's largest, with development taking over a year. The company understood the challenges of transplanting a game concept between social platforms and mobile / gaming systems. In a March 2011 interview, Rovio's Peter Vesterbacka said, "you can ’ t take an experience that works in one environment and one ecosystem and force-feed it onto another. It's like Zynga. They can ’ t just take FarmVille and throw it on mobile and see what sticks. The titles that have been successful for them on mobile are the ones they ’ ve built from the ground up for the platform." The Facebook version incorporate social-gaming concepts and in-game purchases and entered beta-testing in April 2011; the game became officially available on Facebook in February 2012.
