A gaming machine of the type that disgorges a payout is provided a signal
that defines an enhanced payout interval of selective duration. A count
down display provides a visual and/or audible indication of the time
remaining for the enhanced payout interval. The machine disgorges an
enhanced payout in concurrent response to the signal and a payout event.
In one embodiment, a signal generator periodically provides a timing pulse
to the gaming machine of a duration that comprises the enhanced payout
interval. When a payout event occurs during the enhanced payout interval,
the machine disgorges an enhanced payout. The enhanced payout may be
inhibited when the coin in of the machine between timing pulses is less
than a predetermined amount. In another embodiment, clock pulses increment
an activity counter during a pre-selected activity interval. The enhanced
payout signal may be provided to the gaming machine after the activity
interval. Should coin in not occur in sufficient frequency or amount
during the activity interval, the activity counter is reset, thereby
preventing the enhanced payout.