Angry Birds for Mac gets 15 new levels

Rovio has released an update to the original Angry Birds for Mac, bringing it to version 4.0.0. The new release celebrates Angry Birds' fourth birthday.

New to this release are 15 new levels added to the "Bird-day Party" episode. The "Short Fuse" episode that launched for the iOS version at the end of November is also included - 30 more levels set in a piggy laboratory.