You Put The Ball In Holes (but not the wrong ones, follow the numerical order). two 2-way joysticks control a motor on each side, which dictates the height and angle of a metal bar, which the ball will roll on.

there isn't much else to it, mechanics dictated by electric motors and gravity, but it's fairly engrossing. play it if you see it. i prefer an ice cold unsweetened green tea or water, though.