Flappy Bird (2013) is a mobile game developed by Vietnamese video game artist and programmer Dong Nguyen. In the side-scroller game, the player controls a bird, attempting to fly between columns of green pipes without hitting them. The game was brutally difficult to play. Many criticized Flappy Bird for its extreme level of difficulty, and the highly derivative nature of its graphics and game mechanics. Others found it incredibly addictive. The game received a sudden rise in popularity in early 2014 and by the end of January of that year, it has become the most downloaded free game in the App Store for iOS. During this period, Nguyen said that Flappy Bird was earning $50,000 a day from in-app advertisements as well as sales.
Following deep guilt over the games addictive nature and overuse, Nguyen removed Flappy Bird from both the App Store and Google Play on February 10, 2014. The sudden removal caused phones with it pre-installed to be put up for sale for high prices over the Internet. Games similar to Flappy Bird became popular on the iTunes App Store in the wake of its removal, and both Apple and Google have removed games from their app stores for being too similar to the original. The game has also been distributed through unofficial channels on multiple platforms.