In the game, the player controls a slingshot to shoot wingsless birds to attack buildings and pigs, and kill all the pigs in the level as the ultimate goal.There are 11 different kinds of birdies available in the game. Among the earliest levels, only the most basic red bird is available. However, as the game progresses, there will be more types of birdies to use, some of which can cast special abilities by tapping the touch screen while flying in the air. For example, the blue bird (smallest size, good at breaking ice) will split into three slightly smaller birds, the yellow bird (good at drilling wood) can speed up the sprint, and the black bird (bulky, good at breaking stones) It will explode, and the white bird will drop the explosive egg and then fly away on the right at high speed. The green bird will fly round. Piglets also come in a variety of sizes, and small pigs are relatively more vulnerable. Fragile pigs can be destroyed by direct blows or using the debris of destroyed buildings, and larger pigs can withstand more damage. There are also some pigs wearing helmets to make them more defensive.