The grammar of the novel and the grammar of the game are definitely different. Few people know the difference and work, and there are even writers who don't even play the games they make. This is why collaboration with famous novelists and writers does not produce much results. The fact that game screenwriters don’t know games is so paradoxical. Ideal games should be organically intertwined with the story in conjunction with the game system. Even if you play without text, you should be able to understand the story or world view of the game naturally. The book deals with ‘how to deliver game stories by the system of games.’ In other words, it is about ‘how to deliver a story through play.’ Anyone will be able to figure out how to understand the concept of storytelling and apply it to practice.