The NICE Fairy-tale Game System Joakim Gustafson, Linda Bell, Johan Boye, Anders Lindström and Mats Wirén TeliaSonera AB, 12386 Farsta, Sweden This paper presents the NICE fairy-tale game system, in which adults and children can interact with various animated characters in a 3D world. Computer games is an interesting application for spoken and multimodal dialogue systems. Moreover, for the development of future computer games, multimodal dialogue has the potential to greatly enrichen the user’s experience. In this paper, we also present some requirements that have to be fulfilled to successfully integrate spoken dialogue technology with a computer game application.