Flapy Bird was a side-scrolling mobile game featuring 2D graphics. The objective was to direct a flying bird, named "Flaby",
who moves continuously to the right, between sets of walls. If the player touches the walls, they lose. Flaby briefly flaps upward each time that the player taps the screen;
if the screen is not tapped, Flaby falls because of gravity; each pair of walls that he navigates between earns the player a single point.