The game sounds were classified into those emitted from left and right speaker
units of a television receiver and those emitted from a head set worn by a player,
and emission of the individual game sounds from the speaker units or a sound emissive
portion of the head set is controlled corresponding to game screens or scenes.
This allows the player to enjoy the video game while hearing footstep or whispering
of the leading character closely from the head set, and hearing explosive sound
or shout of the enemy characters distantly from the speaker units.