Gaming machine and game having symbol collection and win-improving purchase features

摘要

Games include a symbol collection feature, such as games in which a player collects symbols during the play of a base game, which collected symbols may be used in the play of a bonus game. The collected symbols may preferably improve the probability of the player winning the one or more bonus events or improve the probability of the player achieving a higher payout or winnings as a result of play of the one or more bonus events. Yet another aspect of the invention comprises games which permit a player to purchase symbols or game-extending features. In one embodiment, a player may purchase special symbols for use in improving the probability of their winning a bonus game. In another embodiment, a player may purchase spins or other game-extending or win-improving features for use in improving the probability of their winning a bonus game. The features might comprise, for example, free spins, wild symbols or other elements.