Flappybird is a simple but extremely difficult casual game. It's all about the simple, ungritty 8-bit pixels, the green channel in super Mario, the glassy-eyed flappybird and a few white clouds. You need to constantly control how often you click on the screen to adjust the flappybird's altitude and landing speed, so that the flappybird can pass through the channel on the right side of the screen.
