Rollover Buttons
On most games there is a pair or buttons on the lower left (yellow) and right (red) of the playfield that award a feature when the ball rolls over it.
On early games, the rollovers spotted numbers.
On most games, they moved the extended/extra time/play feature to after-4th for the yellow, and after-5th for the red.
BINGOS - FOR AMUSEMENT ONLY