In Flat Jumper, you start out clicking the screen when the flat pad matching the ball's color (usually red) is about to pass underneath. Afterward, you have to pay attention to the color of the pad, then click the matching color below to change the color of the ball. If the colors don't match, the ball will plummet to its doom. (You don't actually see this part, but the ball is shredded, mangled, crushed, and burned before being buried in soft peat for three month and recycled as firelighters.)
How long can you keep the ball going?
(Note: This one's probably easier on mobile devices. It's kinda tough clicking the colors with the mouse. My highest score so far is just 11.)