Rovio Flings Angry Birds Friends to Android and iOS, is Free to Download
To promote the competitive aspect and keep things fresh, Rovio plans to hold weekly tournaments beginning Monday, May 6th, and will introduce new levels every week.
"Every Monday a different tournament gets under way, with all-new challenges for you and your friends," Rovio stated in a blog post. "Use power-ups such as the King Sling, Super Seeds and Birdquake – or call in the Wingman to give you that winning edge on a new level. And when it’s game time, play for that gold crown and then brag to your friends about your glorious victories. Plus you can celebrate your wins on Facebook and even share fun gifts."
You don't have to worry about which version to use come tournament time, Angry Birds Friends on iOS and Android both automatically sync with Facebook, so you can skip around, depending on which devices you own and which one happens to be handy at the time.