A gaming machine has a processor for conducting a wagering game on the gaming machine and a gesture-sensing mechanism. The gesture-sensing mechanism can be used for providing various inputs. For example, the gesture-sensing mechanism provides player inputs that select certain options during operation of the game. The gesture-sensing mechanism may further distinguish between a first gesture indicative of a first player input and a second gesture indicative of a second player input. Or, the gesture-sensing mechanism provides player inputs in response to a physical action by a player that relates to a theme of the gaming machine. Alternatively or additionally, the gaming machine may include a microphone in communication with the processor. The microphone receives player inputs in the form of acoustic signals.