A dart game system comprising: - a dart game apparatus that includes a dart target having a sensing unit configured for sensing a hit of a thrown dart pin and for receiving the dart pin, a body structure including a display area formed to surround an exterior of the dart target and suitable for receiving an image projected from an image projector positioned outside the dart game apparatus and configured for outputting the received image to be viewed by a user or configured for outputting the image generated in the display area to be viewed by the user, a cover adjacent to the display area to protect the display area, wherein an opening is present in the cover and the dart target is positioned in the opening, and a controller configured for controlling operations of the dart game apparatus, the controller being configured to determine an effect location where an event effect is to be displayed in the display area at least partially based on an information, obtained by the sensing unit, on a hit location where the dart pin reaches the dart target, said effect location being determined as a portion adjacent to a point where a line extending from the center of the dart target to the location which the dart pin hits meets the outline of the dart target or as a portion adjacent to an arc of a fan-shaped area including said hit location; and - a dart game assistant apparatus which is positioned outside the dart game apparatus and which is configured for communicating with the dart game apparatus, wherein the dart game assistant apparatus includes a user interface unit configured for receiving an input from the user and audio and/or image units configured for outputting information related to execution of a dart game. - a dart game apparatus that includes a dart target having a sensing unit configured for sensing a hit of a thrown dart pin and for receiving the dart pin, a body structure including a display area formed to surround an exterior of the dart target and suitable for receiving an image projected from an image projector positioned outside the dart game apparatus and configured for outputting the received image to be viewed by a user or configured for outputting the image generated in the display area to be viewed by the user, a cover adjacent to the display area to protect the display area, wherein an opening is present in the cover and the dart target is positioned in the opening, and a controller configured for controlling operations of the dart game apparatus, the controller being configured to determine an effect location where an event effect is to be displayed in the display area at least partially based on an information, obtained by the sensing unit, on a hit location where the dart pin reaches the dart target, said effect location being determined as a portion adjacent to a point where a line extending from the center of the dart target to the location which the dart pin hits meets the outline of the dart target or as a portion adjacent to an arc of a fan-shaped area including said hit location; and a dart target having a sensing unit configured for sensing a hit of a thrown dart pin and for receiving the dart pin, a body structure including a display area formed to surround an exterior of the dart target and suitable for receiving an image projected from an image projector positioned outside the dart game apparatus and configured for outputting the received image to be viewed by a user or configured for outputting the image generated in the display area to be viewed by the user, a cover adjacent to the display area to protect the display area, wherein an opening is present in the cover and the dart target is positioned in the opening, and a controller configured for controlling operations of the dart game apparatus, the controller being configured to determine an effect location where an event effect is to be displayed in the display area at least partially based on an information, obtained by the sensing unit, on a hit location where the dart pin reaches the dart target, said effect location being determined as a portion adjacent to a point where a line extending from the center of the dart target to the location which the dart pin hits meets the outline of the dart target or as a portion adjacent to an arc of a fan-shaped area including said hit location; and - a dart game assistant apparatus which is positioned outside the dart game apparatus and which is configured for communicating with the dart game apparatus, wherein the dart game assistant apparatus includes a user interface unit configured for receiving an input from the user and audio and/or image units configured for outputting information related to execution of a dart game.