Use arrow keys to move, and try to go away from the black dot, as the platform under you disappears. Easy - The platforms disappear at a slow rate, and the black dot is very slow. Medium - The platforms disappear a twice as fast as Easy, and the black dot is moderately quick, but you get twice the points at the end of the game! Hard - The platforms disappear almost twice as fast as Medium, and the black dot is racing to get around the platforms, but you get three times the points! Impossible - Platform falls at the same pace as hard, but the black dot is now following you at the fastest way it can! There is a plus though... you get four times the points!
Credit must be given to TheFatRat for their amazing music.