Angry Birds (video game) crates and rocks are incorporated into the structures, and power-ups may be used to enhance the birds to attack hard-to-reach pigs. Also in the levels, players can unlock bonus levels by collecting golden eggs. There are several different types of birds used in the game, distinguished by their color and shape. In the earliest levels only the basic red bird is available. As the player advances through the game additional types of birds become available. Some birds are effective against particular materials, and some have special abilities that may be activated by the player while the bird is airborne. For
Angry Birds Birds", and regularly plays other NBA stars in matches, although he is weary of cheating. In August 2011, the Milwaukee Brewers played the "Angry Birds" theme song during the pre-game introductions of the arch-rival St. Louis Cardinals players, in reference to former Cardinals' manager Tony LaRussa's propensity to bean opposing players. "Angry Birds" also appears briefly, for comic relief, during a scene in the 2013 film "", in which Zartan plays the game while waiting for the world leaders' response to his threats of annihilation. Angry Birds were featured in the 2013 Helsinki episode of Veep. Angry Birds was referenced