Flappy Bird is a mobile game developed by Vietnamese video game artist Dong Nguyen. Nguyen created the game over the period of several days, using a bird protagonist that he had designed for a cancelled game in 2012. The game was released in May 2013 but received a sudden spike in popularity in early 2014 and became a sleeper hit.
See also: Gears, 2048 (video game), Adaam, Swing Copters, Splashy Fish, Crossy Road.