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 retail store somewhere in China, considered the game's fastest-growing market. Merchandise has been successful, with 45% of Rovio's revenues in 2012 coming from branded merchandise. The most notable toys are the Telepods, created by Hasbro. These figures are created for "Angry Birds Star Wars II", "Angry Birds Go!", Angry Birds "Stella", and Angry Birds "Transformers". Telepods use a similar digital toy hybrid concept as Skylanders or Disney Infinity characters, but there is a different technology behind it. These are figures used to "teleport" a character of the corresponding figure into the game by scanning a tiny QR code via the