INFORMATION STORAGE MEDIUM AND GAME DEVICE

PROBLEM TO BE SOLVED: To realize expression of cloud without discrepancies to change of the position of a virtual camera or the direction of eyes. SOLUTION: An initial setting part 616 sets initial data 950 in starting a game, and a small cloud drawing part 632 generates a small cloud texture 102 by synthesizing cloud parts A 122, cloud parts B 124, and air current textures 104 based on a pitch angle X of the virtual camera 100. A medium cloud generating part 612 and a medium cloud drawing part 634 generate a medium cloud texture based on the initial data 950 and the small cloud texture 102. A sea-of-clouds generating part 618 and a sea-of-clouds drawing part 640 dispose a medium cloud billboard in a cloud setting range R based on the initial data 950 and the medium cloud texture, and generates a frame of images including a sea of clouds. COPYRIGHT: (C)2004,JPO