A test of your balancing skills.
When you switch the timer button to "Start", the long yellow bar begins to
climb steadily from the bottom of the screen, passing over the many
variously-sized pits (representing defensive tacklers) in the playfield. You have to roll the silver
along the bar to keep it out of the pits, since there's no way of getting
it back out if it lands in one. You can just make out the various scores
attached to the different pits in the picture - obviously, the further you
get, the more you tend to score. But the gaps between the pits get smaller