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 POP! Angry Birds POP! Angry Birds POP! is a tile matching game co-developed by Rovio Entertainment and Outplay Entertainment that was soft launched for iOS in Canada in December 2014 and released worldwide for iOS and Android devices in March 2015. The game was originally the second game in the "Angry Birds Stella" series. It was originally released as "Angry Birds Stella POP!", and was given its current name, without Stella, with an update in July 2015 that added classic Angry Birds characters to the game. In October 2015, the game was released as a Facebook game that was discontinued on