Fans of the 'Flappy Bird' app are threatening to kill its creator or themselves now that app is no longer available: https://t.co/SlGrGcxMkv — Eli Langer (@EliLanger) February 9, 2014 
 
 Although the app launched in May 2013, it became an overnight sensation this week as it climbed to the top free app in Apple's App Store and Google Play for Android. "Twenty-two hours from now, I will take 'Flappy Bird' down," Dong said, adding "it is not anything related to legal issues. "I cannot take this anymore," he wrote. Flappy Bird caused a sensation after rising from obscurity to become one of the most downloaded mobile games on both Apple and Google's online stores.
– It's game over for Flappy Bird. At midnight, the Vietnamese creator of the hugely popular mobile game made good on his threat to pull the game from app stores, saying the attention from its instant success had become too much and he couldn't take it anymore, reports Mashable. Dong Nguyen, who had been making an estimated $50,000 per day from the game, says he plans to keep making games and the decision had nothing to do with legal issues, though friends say he received a warning letter from Nintendo over the game's similarity to Mario Bros, Reuters finds. "I can call 'Flappy Bird' is (sic) a success of mine," tweeted Dong. "But it also ruins my simple life. So now I hate it." His creation—described as an "almost sadistically difficult game with crude graphics and laughable sound effects" by Nick Wingfield at the New York Times—can still be played by people who have already downloaded it, which should keep Dong's income from ads on the free game rolling in. The developer says that despite all the hard-to-handle attention, he plans to keep making games and might even create a Flappy Bird sequel.