A game apparatus includes a first LCD and a second LCD, and on the first LCD, a two-dimensional game screen including objects positioned in a two-dimensional coordinate is displayed. When a two-dimensional coordinate of a specific object out of the objects positioned in the two-dimensional coordinate satisfies a predetermined condition, a three-dimensional coordinate of each of the objects is calculated on the basis of the two-dimensional coordinate of each of the objects. The object is modeled in the calculated three-dimensional coordinate, moved by a predetermined animation, and then shot by a virtual camera. Accordingly, a game screen of an image (animation) of the three-dimensional virtual space shot by the virtual camera is displayed on the second LCD.