A bonus game for an underlying base casino machine played by a player
wherein the bonus game provides a Pachinko playing field, a ball
propelled onto the Pachinko playing field when a bonus condition occurs
during play of an underlying casino game. The Pachinko playing field
having a row of lanes so that the ball, after traversing the playing
field, travels through one of the lanes. A display at said row of lanes
on said playing field for displaying at the lanes, targets, digits used
to form a decimal number, graphic symbols used to perform a mathematical
operation, symbols appearing in the underlying game outcome, so as to
provide awards, wild symbols, extended game play, etc.