An Angry Birds store opened in Helsinki, Finland, Nov 11, 2011. The world's first official Angry Birds store features an array of products such as toys, T-shirts, bags and smartphone cases. The mobile device application, created by Finnish company Rovio, has been downloaded more than 500 million times since its release in 2009, making it one of the most popular apps. Additional Angry Birds stores are due to open in China, according to Rovio. [Photo/Xinhua]