This study focuses on clarifying orality on game as a medium. The media has progressed through a complicated process where the inter-relationship between media has been occurred. The orality, the oldest form of medium, has been a 'residuary medium' and the spoken word has been transformed in spite of the advent of new media. This study attempts to discuss the characteristics of 'game' as a medium through the concepts of Walter Ong's primary orality, literacy, and the secondary orality. The characteristics of 'game' as a medium based on the multimedia, interactive existence, and the user-generated narrative, and these characteristics of 'game' could be illuminated through the Ong's orality. This study makes an effort to explore the modes of the presence of the orality through the psychodynamic approach of media. The difference of mentality appeared by the medium, because background and characteristics of the medium itself could control the size and characteristics of the human experience.