The Facebook app is similar to the original mobile version, with the addition of social components, brand new power-ups, and exclusive new levels. The added social aspect allows players to compete with their Facebook friends for gold, silver, and bronze crowns in any level. Players can also brag about their scores on the social network and give their Facebook friends "mystery gifts" of power-ups.
The Facebook version includes four new power-ups, including "sling scope" (for better targeting), "king sling" (for more power and velocity), "super seeds" (to supersize your bird, turning it into a "pig popping giant"), and "birdquake" (to shake the battlefield and bring down pigs' defenses). Besides being gifted with power-ups, players can earn them through game play or purchase them.
And - even better - anyone who plays the game between now and Feb. 16 will receive 14 free power-ups as a special Valentine's Day gift from Angry Birds developer Rovio.
Rovio said it is lining up even more features and gameplay for the Facebook version of the game in the coming weeks.
"This launch is just the beginning for Angry Birds on Facebook," Petri Järvilehto, Rovio's senior vice president of game publishing, said in a statement.
The mobile version of Angry Birds has garnered more than 700 million downloads to date, making it one of the most popular games in history.