It's hard to believe, but there is seriouslyanother Angry Birds game headed to mobile today, dubbed Angry Birds Friends. Like its Facebook counterpart, the game is focused on social versions of standard Angry Birds mechanics -- flinging various bird types at various structures protecting pigs, with the ultimate goal of destroying said pigs. The twist in this iteration is that your score is tracked and stacked up against friends via Facebook, meaning that people on all platforms (Facebook, iOS and Android) can play against each other. Should you be wary of shelling out more cash for fowl, worry not, as Angry Birds Friends is free (supported by ads, as you might imagine). It's available now on both iTunes and the Google Play store.