By Nguyen Phuong Linh HANOI (Reuters) - The developer of Flappy Bird, the former most popular free mobile game on the Apple Inc App Store and Google Inc's Android Play store, took the game down at midnight on Sunday as he announced he would do 22 hours earlier. The game is no longer available to download for either Apple or Google users, but its fans still can have fun with the bird if they already downloaded the game to their devices. Nguyen Ha Dong, a Hanoi-based game developer, announced the grounding of the addictive game in a Tweet at 1900 GMT on Saturday in which he also apologized to Flappy Bird players. "Twenty-two hours from now, I will take 'Flappy Bird' down," Dong said, adding "it is not anything related to legal issues.

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