An operation target image is displayed at a first position, which is set in advance, of a touch screen and a range image capable of specifying a first range which is set in advance and includes the first position is displayed. A drag operation on the operation target image is received from a user to move a display position of the operation target image to a position within the first range depending on a current position of the drag operation. A first game control is executed in accordance with the first position and the display position of the operation target image. A tap operation on the first range is received from the user to execute a second game control regardless of whether the tap operation is an operation for the operation target image.