Green Day

Angry Birds Green Day is an episode on Angry Birds Friends that promotes the punk rock band Green Day.It was released on August 20,2012.

Golden Egg

 * There was also a "Heart like a Hand Grenade" which unlocks an hidden level like a Golden Egg found on level 3 that's shaped like a heart grenade which symbolizes the cover of Green Day's 2004 album,American Idiot.

This is the http://greenday-game.angrybirds.com/ Green Day Page