Angry Birds celebrates 4th year anniversary

On December 10th, Angry Birds celebrated their fourth birthday, and added 15 new levels to the original app, under the Bird-day Party Episode.

There have also been additions to the Short Fuse episode from the previous update and you can now play 30 levels in a piggy laboratory with scientists and potions. There’s even a new ability and new potions.

The Shock Wave Power for Bomb creates a circle of electricity and unleashes an almighty blast for the booming birdy.

Meanwhile, new potions make the piggies look, well, a little bit different.

The update is available now and completely free of charge..

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