The Facebook app, as you might imagine, features the same disgruntled birds and addictive gameplay you've seen in mobile and desktop versions of the game.
It will also feature added social components, brand new power-ups, and Facebook-exclusive levels.
Angry Birds has been downloaded more than 700 million times since its release for Apple's iOS in December 2009, and with Facebook's 800 million users, it's bound to hit 1 billion soon.
Thanks to the success of Angry Birds, game maker Rovio emerged as a gaming powerhouse, and it's looking to go public as soon as 2012. Right now, the company is worth more than $1 billion, according to CMO Peter Vesterbacka.
Check out the trailer for the Facebook version of the game below, and try out the game here.