A game apparatus includes a CPU, and the CPU sets a moving direction, that is, a position and an orientation of a moving object within a game space on the basis of angular velocity data transmitted from a first controller, that is, an attitude of a gyro sensor unit (gyro sensor). Then, when a second controller is drawn toward a near side in a state that a C button and a Z button thereof are simultaneously pressed, and the C button and the Z button are simultaneously released in that state, the moving object is shot.