A gaming machine has a display and a game controller arranged to control images of symbols displayed on the display. The game controller is arranged to play a game wherein at least one random event is caused to be displayed on the display and, if a predefined winning event occurs, the machine awards a prize. A game has a feature having non-monetary characteristics which can be won, the non-monetary characteristics being able to be gambled. The gaming machine includes a selector by which a player is able to gamble at least one of the non-monetary characteristics of the feature.