This Thesis attempts to analyse narrative aspect of digital games with the concept of \'agency\' and \'multiple point of view\'. The past theory of \'interactivity\' concentrate on players\' diverse experience, which was hardly ever related to the final object of the game. We can\'t estimate that it has embodied high agency of the players\' desire when a game emphasizes on only variety choice of interface. It can be estimated that it has high developed interactivity but low agency. Furthermore we will introduce the \'multiple point of view\' of digital games. From 1990s FPS(First Person Shooting) game has become increasingly popular with a point of view of first person. The interface of FPS can be seen as first person, but it can be converted into second person by literary description. It means that FPS accomplish second person narrative successfully for the first time in the history of narrative.