The mobile version has six-level tournaments that change twice a week, but there are no episodes like other games or the
Facebook version. Unlike the previous
Angry Birds games, this game syncs progress with the Facebook version's weekly tournaments between the player, placeholder scores represented by Red and Chuck, and any of the player's Facebook friends who also play the game. The game requires a login to Facebook to sync progress; otherwise one can play without a Facebook account. The top 3 winners each week earn in-game currency, called Bird Coins, which can be used to purchase power-ups or to acquire additional bird slingers. In addition, the game includes four power-up practice levels where there are infinite power-ups available for use. In August 2012, Rovio announced a partnership with the punk band
Green Day, which led to 20 new levels of
Angry Birds Friends on Facebook featuring all three members of the band. The new levels showcased each member of Green Day as a green, bad pig and also featured Green Day's latest single, and an exclusive track. The levels were removed in December 2012. ==Reception==