Slingshot

The slingshot is the main weapon/utility the birds use in order to attack the pigs. The player can pull back on the slingshot strap, then release to fire a bird in whatever direction the player desires. The slingshot has first appeared in Angry Birds, and every game after that (except Transformers), even its spinoff, Bad Piggies.

History
In The Angry Birds Movie, the slingshot was first introduced during a dance party. Later, during the Raid on the Eggs, Red was flung towards the beach. Later, in the Battle of Pig City, birds were flung to Pig City, destroying structures and the castle. Terence eventually broke it for being too big to go on it, but it was later repaired. The newborn Blues then used it to launch themselves at sea.

In the years after the battle, as Bird Village expanded, the Birds used slingshots to catapult themselves to other parts of the village, effectively creating a mass transit system out of them.

Angry Birds/Angry Birds Seasons/Angry Birds Rio/Angry Birds Space/Angry Birds Star Wars
The player can change the direction and angle the bird will launch at by simply moving the bird up or down. The player can also change the firing speed. Pull the bird back, slightly to make a weak launch, and pull it back farther to make a stronger launch (the latter often recommended). In Angry Birds Rio, if the player is already using the slingshot, he/she can't cancel the process.

Angry Birds GO!
The slingshot is used to begin races in  Angry Birds Go!  The King Sling also appears as a Power-Up in the game, which increases the distance when the player is released from the slingshot and begins the race.

Angry Birds POP!
The slingshot is used in Angry Birds POP! to fling bubbles to pop bubbles.

Angry Birds 2
It is possible to cancel a shot even after the bird is readied, but pulled back. This can be done by moving it back towards its starting point, in the event that a different bird is desired at that time.

Slingshot Power-Ups
In Angry Birds, there are two power-ups that change the abilities of the Slingshot: the King Sling and the Sling Scope. The King Sling grants maximum velocity to flinged birds while the Sling Scope allows targeting as you pull back on the slingshot. Angry Birds Seasons and Angry Birds Rio do not feature the King Sling, but they do use the Sling Scope. In the Facebook version of Angry Birds Star Wars, there's an equivalent to the King Sling known as the Lightsaber Sling.

Trivia

 * If the player hits the bird on the Slingshot with another bird or a glass of debris from the Pig fortress, it causes the bird on the slingshot to rotate. See this page for more information.
 * When the birds are launched in Bad Piggies, they pull back and fling automaticlly.
 * The Slingshot appears in every Angry Birds Toons episode with the birds so far except for Egg Sounds and Run Chuck Run.

Appearances

 * Angry Birds
 * Angry Birds Seasons
 * Angry Birds Rio
 * Angry Birds Space
 * Angry Birds Star Wars
 * Angry Birds Friends
 * Angry Birds Chrome
 * Angry Birds Volcano
 * Angry Birds: Wonderful Pistachios
 * Angry Birds Vuela Tazos
 * Angry Birds Google+
 * Angry Birds Heikki
 * Angry Birds Telepizza
 * Bad Piggies
 * Angry Birds Toons
 * Angry Birds Go!
 * Angry Birds Epic (cameo on the Blues' attack)
 * Angry Birds Stella
 * Angry Birds POP!
 * Angry Birds 2
 * Angry Birds Action!
 * The Angry Birds Movie
 * The Angry Birds Movie 2
 * Angry Birds Blast!
 * Angry Birds Evolution (On Bird Town's Scout Launcher)
 * Angry Birds For Facebook Messenger
 * Angry Birds Champions
 * Angry Birds Dream Blast
 * Angry Birds Island