Angry Birds Friends is a game that allows players to compete against each other in weekly tournaments and one-on-one battles. Every Monday, Thursday, and Saturday, new competitive tournaments begin, featuring 24 new levels each week. Players can challenge opponents and win to advance to higher leagues, with the top position offering amazing rewards. Additionally, there are special themed tournaments every other week. <br/><br/>In the Star Cup, players can challenge other Angry Birds players one-on-one. Each level offers free power-ups, level effects, and special slingshots. Players can collect feathers to level up their birds and gain more scoring power. Winning multiple matches in a row increases rewards. <br/><br/>Angry Birds Friends is free to play, but there are optional in-app purchases available. The game may be updated periodically to add new features or content or to fix bugs or other technical issues. It is important to note that the game may not function properly if the latest version is not installed. Rovio will not be responsible for the game failing to function as expected if the latest update is not installed. <br/><br/>Overall, Angry Birds Friends offers a fun and competitive gaming experience for players. With weekly tournaments and one-on-one battles, players can challenge themselves and others to become the best Angry Birds player in the world. The game is free to play, but players can choose to make in-app purchases. It is important to keep the game updated to ensure proper functionality.