Jay Van Hutten has recreated famous Flappy Bird game for Game Boy Advance. He coded a clone for the game and port it to a cartridge. The Game Boy model he uses for the following video is a Game Boy Micro.
To play the game, use the right button on the d-pad to flap and press A + B + START + SELECT to soft reset the game. To wipe your scores, hold the SELECT button while the Game Boy Micro is booting. For those who are interested can download the game and maybe try to play it on an emulator.