Angry Birds (video game) was being played, the staff liked the characters, and the team elected to design a game around them. In early 2009, physics games, such as "Crush the Castle", were popular flash-based web games, so the Rovio team was inspired by these games. During the development of "Angry Birds", the staff realized the birds needed an enemy. At the time, the "swine flu" epidemic was in the news, so the staff made the birds' enemies pigs. Angry Birds was the studio's 52nd produced game and on its initial release, the game did not sell many copies. After Angry Birds was a
Angry Birds Go! Angry Birds Go! Angry Birds Go! is a kart racing game and the eighth game in the "Angry Birds" video game series. The game was co-developed by Rovio Entertainment and Exient Entertainment, and was released on December 11, 2013. The game is compatible with Hasbro Telepods that will allow the player to summon a specific kart. The game's tracks are located on the 3D-rendered Piggy Island. The game also features upgradable karts and unique powers for each character. As of November 2014, "Go!" has been downloaded over 100 million times and team multiplayer was added. In 2017 Angry Birds Go!