Visitors enjoy the Angry Birds theme park in Tongji University in Shanghai, on Oct 31, 2012. The 200-square-meter theme park, based on the popular game, opened on Oct 31. The park is located inside Tongji University of Shanghai and recreational facilities in the shape of the game's characters are open to visitors for free. [Photo/Xinhua]

Facilities at the Angry Birds theme park in Tongji University in Shanghai, on Oct 31, 2012. [Photo/Xinhua]