Turn up music for the full experience! When the Start Screen appears, use the spacebar to activate regular mode or use the up arrow to activate challenge mode. Then, press spacebar (or up-arrow) to flap away!
This is different from normal Flappy Bird in that it gets progressively more difficult and also has a few other twists. Thanks to Dong Nguyen and .GEARS Studios for inspiration and graphics from Flappy Bird. Thanks to Nintendo and pokeremixstudio.floatzel.net for the music. Also, thanks to all the others that provided graphics.