The lovable flying Angry Birds will be celebrating their 2nd birthday all over the world on 11 December with a new update. Fans everywhere can enjoy a new Happy Birdday update for Angry Birds ...

Titled 'Happy Birdday,' the December 11-due update includes new achievements and art alongside fifteen new levels, and also unlocks all of the Angry Birds episodes so that they don't have to be ...

Rovio Mobile first released Angry Birds on the 11th of December 2009, and to mark this milestone, Rovio has released a new free update for Angry Birds called ‘Happy Birdday’.