The player controls a flock of flightless birds on a mission to save their eggs after they were stolen by a large number of green pigs. In each stage of the gameplay, the pigs are sheltered by structures made of various materials such as wood, glass, and stone resembling children's toy building blocks. Pigs are located inside the structures. Using a big slingshot, the player's objective is to launch a finite amount of birds with the goal of collapsing structures to eliminate pigs.