Abstract: A technique is disclosed that makes it possible to prevent or suppress various problems that may occur due to character placement control when implementing a multi-player game that utilizes an augmented reality space. A basic area is set based on the relative position of each game device with respect to an AR marker, and an element area is set so that the AR marker does not lie outside the imaging range of a CCD camera module of each game device. An overlapping area of the basic area and the element area is calculated to be a placement area. The motion of an attention object is controlled so that the attention object remains within the placement area.

Abstract: A technique is disclosed that makes it possible to prevent or suppress various problems that may occur due to character placement control when implementing a multi-player game that utilizes an augmented reality space. A basic area is set based on the relative position of each game device with respect to an AR marker, and an element area is set so that the AR marker does not lie outside the imaging range of a CCD camera module of each game device. An overlapping area of the basic area and the element area is calculated to be a placement area. The motion of an attention object is controlled so that the attention object remains within the placement area.