Loudspeakers 12 are arranged at left and right sides at an upper
part of a game machine casing 10 provided with a monitor 11, and
a loudspeaker 21 is arranged in the center of the front surface of the casing
10. A hitting sound made in a distant position is outputted as a sound effect
from the loudspeakers 12, whereas a sound of a bullet hurtling through the
air when the bullet passes in a near position is outputted as a sound effect from
the loudspeaker 21. Accordingly, an acoustic presence in response to an
attacking result from a game machine side can be given.
