A dart gaming system comprising a dart game device and one or more external dart game devices, the dart game device interworking with the one or more external dart game devices, each dart game device (1; 60) comprising: a dart target having a plurality of point regions; a sensing unit sensing hitting of a dart; a light source unit (40; 65); a sound source unit (80; 85); and a communication unit (50; 55) configured for communication of said dart game device with said one or more external dart game devices, and for control of the one or more external dart game devices, in response to the occurrence of an event, to output light in a light pattern, or to output sound in a sound pattern, wherein patterns of change in flickering scheme and color of the light source unit (40; 65), and patterns of the sound effect of the sound source unit (80; 85) depending on occurrence of an event are executed by the light source unit (40; 65) and the sound source unit (80; 85) of the dart game device and one or more external dart game devices, characterized in that: the dart game device further comprises a plate structure laid under a player of the dart game device, a behind structure disposed behind the player, a roof structure roofing the player, and one or more side structures disposed on one or more sides of the player, each of said structures (403, 404, 405, 406) comprising an additional light source unit and an additional sound source unit, each of the one or more external dart game devices comprises a plate structure laid under a player of the external dart game device, a behind structure disposed behind the player, a roof structure roofing the player, and one or more side structures disposed on one or more sides of the player, each of said structures comprising an additional light source unit and an additional sound source unit, wherein the patterns of change in flickering scheme and color of the light source unit, and the patterns of the sound effect of the sound source unit depending on occurrence of an event are executed by the additional light source units and the additional sound source units of the dart game device and by the additional light source units and the additional sound source units of the one or more external dart game devices. a dart target having a plurality of point regions; a sensing unit sensing hitting of a dart; a light source unit (40; 65); a sound source unit (80; 85); and a communication unit (50; 55) configured for communication of said dart game device with said one or more external dart game devices, and for control of the one or more external dart game devices, in response to the occurrence of an event, to output light in a light pattern, or to output sound in a sound pattern, wherein patterns of change in flickering scheme and color of the light source unit (40; 65), and patterns of the sound effect of the sound source unit (80; 85) depending on occurrence of an event are executed by the light source unit (40; 65) and the sound source unit (80; 85) of the dart game device and one or more external dart game devices, characterized in that: the dart game device further comprises a plate structure laid under a player of the dart game device, a behind structure disposed behind the player, a roof structure roofing the player, and one or more side structures disposed on one or more sides of the player, each of said structures (403, 404, 405, 406) comprising an additional light source unit and an additional sound source unit, each of the one or more external dart game devices comprises a plate structure laid under a player of the external dart game device, a behind structure disposed behind the player, a roof structure roofing the player, and one or more side structures disposed on one or more sides of the player, each of said structures comprising an additional light source unit and an additional sound source unit, wherein the patterns of change in flickering scheme and color of the light source unit, and the patterns of the sound effect of the sound source unit depending on occurrence of an event are executed by the additional light source units and the additional sound source units of the dart game device and by the additional light source units and the additional sound source units of the one or more external dart game devices. the dart game device further comprises a plate structure laid under a player of the dart game device, a behind structure disposed behind the player, a roof structure roofing the player, and one or more side structures disposed on one or more sides of the player, each of said structures (403, 404, 405, 406) comprising an additional light source unit and an additional sound source unit, each of the one or more external dart game devices comprises a plate structure laid under a player of the external dart game device, a behind structure disposed behind the player, a roof structure roofing the player, and one or more side structures disposed on one or more sides of the player, each of said structures comprising an additional light source unit and an additional sound source unit, wherein the patterns of change in flickering scheme and color of the light source unit, and the patterns of the sound effect of the sound source unit depending on occurrence of an event are executed by the additional light source units and the additional sound source units of the dart game device and by the additional light source units and the additional sound source units of the one or more external dart game devices.