To provide a game device capable of more quickly starting detecting an aiming position by an aiming means even when playing a game such as aiming at a target in an image display surface by using the aiming means.

This game device determines whether or not a detecting position exists in a target position by detecting the position in an image screen 1a determined by aiming at the target by the aiming means 3 from the front of the image screen 1a of a game image display means 21 for displaying the target. The game device is provided with a trigger means 32 for starting to detect the position in the image screen 1a of the game image display means 1 determined by the aiming means 3 by voice.