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 Rio issue with the new boss battles, calling them "a little anti-climactic". Tracy Erickson of "Pocket Gamer" noted that "what Angry Birds Rio lacks in new ideas and freshness, it makes up in quality gameplay and good value". Since release, "Angry Birds Rio" has been downloaded more than 10 million times, and it has been one of the top downloaded games at both the Apple App Store and Google Play. Angry Birds Rio Angry Birds Rio is the third puzzle video game in the "Angry Birds" series, developed and published by Rovio Mobile. Based on "Angry Birds", "Angry Birds Rio" was