Power-Ups

Power-Ups are a feature of the game introduced in Angry Birds Friends and has since been incorporated into the iOS and Android version of the game as of v2.2.0. They are a set of items that the player can use to augment the Birds and make clearing levels and earning three stars easier.

The power-ups act the same in all versions of the game. Players receive a small number of each one the first time they start the game with this feature in place. They can also be purchased through the appropriate marketplaces or they may receive periodic random power-ups for free.

Sling Scope
Using the Sling Scope produces a visible arc trail with which the player can aim the slingshot more accurately. Note that the Scope will only project a bird's initial arcing path, not any alterations that may result from using a bird's powers. Once activated, the Sling Scope remains in place for the rest of the level. Sling Scope is also used in Angry Birds Space but as a standard feature to compensate for the difficulty of plotting flight trajectories in that game.

Birdquake
The Birdquake makes the ground shake, causing delicately-balanced walls and pigs to teeter and fall down (along with anything relying on them for support)

Super Seeds
Super Seeds cause the current bird in the launcher to grow larger and much more powerful: capable of defeating more and stronger walls before losing energy.



King Sling
The King Sling is a metal slingshot with stronger rubber bands that provide a lot more power for bird launches, allowing them to fly further and faster. Once activated, the King Sling remains in place for the rest of the level.

TNT Drop
There were supposed to be another power-up that would make Energy TNT with pairachutes fall from the sky, but Rovio cut that idea, probably because it resembled the White Bird's ability too much.
 * Energy TNT