Why Angry Birds are so darn popular

Angry Birds is the most popular puzzle-type video game developed by Rovio Mobile. And just how much did the agitated feathery creatures bring last year? A very cool $106 million with 60%+ profit margin with only 224 employees. Downloaded 800 million times to date with 200 million active users by end of 2011, Angry birds has turned out to be a worldwide hit.

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