A computer-implemented method of operating a gaming machine may comprise accepting funds from a player and enabling the player to play a wager-based game. The wager-based game may be configured to present a plurality of separate wagering opportunities for player interaction during the game, an at least partially successful player interaction with any of which generates a wager. An initial value may be associated with each of the plurality of wagering opportunities. A player interaction may be received with one or more wagering opportunities via a player interface. A wager may be placed when the received player interaction is determined to have at least partially successfully interacted with at least one of the plurality of wagering opportunities. The initial value associated with each wagering opportunity with which the received player interaction was at least partially successful may be selectively updated to generate respective updated values. A score may then be determined, the score being related to, for example, at least the generated updated values and a number of wagering opportunities with which the received player interaction was at least partially successful. Thereafter, one or more of a plurality of payout schedules may be selected and accessed according to the determined score. The reward due to the player may then be determined using the accessed payout schedule(s).