When dice are rolled inside the box, the images of the eyes on the lower face of the dice are captured. The CPU determines the eye number based upon the determination condition of at least one of the feature, the number, and the location state of the eyes in a predetermined area in the image-captured face according to the image information by the image-capturing section, as well as the programs stored in the ROM. The determined eye number is displayed on the display section through the display control section or the voice synthesized by the audio processing section is outputted from the speaker.