Rovio mobile announced that it has updated the Angry Birds Seasons game, Easter Eggs for Angry Birds Seasons, on all platforms with 15 new springtime levels. The update is ready in all appstores for iOS, Android, Symbian^3 and Palm WebOS.
A game play trailer is also available. Watch it.
“Furthermore, we will soon launch the biggest alternate reality game with Angry Birds ever – be prepared to seek for clues around the world to discover the secrets hidden in Angry Birds Seasons!” (via)