With the advancement of computers and networks, new types of entertainment have emerged such as video games, entertainment robots, and network games. This volume brings together researchers, developers, and practitioners working in the area of entertainment computing, and covers a wide range of issues, from theoretical to hardware/software, systems, human interfaces, and applications. The text presents the most up-to-date research and developments in: computers and games; human interface technologies for game applications; home/arcade games and interactive movies; video game computer technologies; motion capture technologies; real-time computer graphic technologies; interactive movie systems; entertainment robots and physical systems; entertainment robot systems; music informatics; MDI and its extensions; and more. This volume comprises the proceedings of the First International Workshop on Entertainment Computing (IWEC 2002), which was sponsored by the International Federation for Information Processing (IFIP), organized in cooperation with the Information Processing Society of Japan (IPSJ), and held in Japan in May 2002.