A wagering game is conducted on a gaming machine. The wagering game
includes a basic game and a special feature triggered by a start-feature
outcome in the basic game. In the special feature, the machine randomly
selects a plurality of outcomes and provides a payout multiplier for each
of the respective outcomes. Each of the outcomes includes a plurality of
symbols placed in a symbol array. The payout multiplier for each of the
respective outcomes is modified (e.g., increased) based on any
occurrences of a predetermined symbol among the plurality of symbols
included in a preceding one of the outcomes. The machine awards payouts
for the respective outcomes according to a pay table and multiplies each
payout by the respective payout multiplier.