Developed by Rovio Mobile in 2009, Angry Birds is a highly successful mobile gaming app. Players launch birds in slingshots, attempting to destroy the evil pigs that stole their eggs. The game received overwhelmingly positive reviews upon its release, and is one of the must successful video game apps created. The game currently has two spin-offs: Angry Birds Seasons, a Halloween edition, and Angry Birds Rio, which takes place in Rio de Janeiro.