A slot machine operable is in a basic mode and a bonus mode. The bonus game is entered upon the occurrence of start-bonus game outcome in the basic mode. In the bonus game, a player may select from an array of windows, each associated with a bonus game outcome. Credits are awarded based upon which ones of the windows are selected. The bonus game may end upon selection of a window associated with an end-bonus outcome but otherwise continues, allowing the player to make further selections until encountering an end-bonus outcome. A bonus game resource obtained in the basic game may be exercised in the bonus game to affect the bonus game outcome. For example, where the occurrence of an end-bonus outcome would otherwise end the bonus game, a player having a bonus game resource may exercise the bonus game resource to continue playing the bonus game.