A game system comprising: a gaming console including a gaming console main body, wherein the gaming console comprises a game control device that controls a game; and a game controller having a game controller body attachably/detachably mountable to the gaming console main body or a support unit; the game controller including: a game controller body attachably/detachably mountable to the gaming console main body or the support unit, wherein the game controller body comprises an attachment rail for attachably/detachably mounting the game controller body to the gaming console main body or the support unit and a vibrator that vibrates the body based on a given signal; wherein one of the gaming console main body, the game control device, and the game controller is provided with: a detector that detects a mounted/unmounted state indicating either a mounted state in which the body is mounted to the gaming console main body or the support unit, or an unmounted state in which the body is detached from the gaming console main body or the support unit; and wherein the game controller further comprises a control circuit that controls vibration of the vibrator in accordance with the detected mounted/unmounted state. a gaming console including a gaming console main body, wherein the gaming console comprises a game control device that controls a game; and a game controller having a game controller body attachably/detachably mountable to the gaming console main body or a support unit; the game controller including: a game controller body attachably/detachably mountable to the gaming console main body or the support unit, wherein the game controller body comprises an attachment rail for attachably/detachably mounting the game controller body to the gaming console main body or the support unit and a vibrator that vibrates the body based on a given signal; wherein one of the gaming console main body, the game control device, and the game controller is provided with: a detector that detects a mounted/unmounted state indicating either a mounted state in which the body is mounted to the gaming console main body or the support unit, or an unmounted state in which the body is detached from the gaming console main body or the support unit; and wherein the game controller further comprises a control circuit that controls vibration of the vibrator in a game controller body attachably/detachably mountable to the gaming console main body or the support unit, wherein the game controller body comprises an attachment rail for attachably/detachably mounting the game controller body to the gaming console main body or the support unit and a vibrator that vibrates the body based on a given signal; wherein one of the gaming console main body, the game control device, and the game controller is provided with: a detector that detects a mounted/unmounted state indicating either a mounted state in which the body is mounted to the gaming console main body or the support unit, or an unmounted state in which the body is detached from the gaming console main body or the support unit; and wherein the game controller further comprises a control circuit that controls vibration of the vibrator in accordance with the detected mounted/unmounted state.