Flappy Bird creator Dong Nguyen has released a new app, which is both challenging and fun. Swing Copters is finding its way on to every smartphone in the world. When first released, the game found its way to the third spot in free apps. Currently it is sitting in the thirteenth spot. After receiving over 6,000 four star reviews, Swing Copters is doing well, but doesn’t look like it will be as popular as Flappy Birds.