Almost all the applications available on the application stores long for the level of popularity achieved by a very simple game. Flappy bird was designed for the iOS and Android operating systems. Millions of people downloaded this free application before it was pulled off. Flappy Bird entered the application stores in May 2013 and became the most popular application in a few months. Its popularity was touching the highest level by the time it was pulled down by its own developer.stores, people are not going to forget it and they are willing to use any method in order to play and enjoy the game.