The concept of game design brings innovative ideas and transformative opportunities to the field of archival digital narrative. Focusing on the deep integration of the Layered Tetrad and archival digital narrative, this paper discusses the development mechanism and cultural communication stage of archival digital narrative products based on the Layered Tetrad, in order to provide theoretical references and practical guidance for the development of archival digital narrative products in the wave of gamification. By analysing the compatibility of the Layered Tetrad with the archival digital narrative, this paper proposes the development mechanism of the archival digital narrative products based on the unitarity of the media, and proposes the cultural communication stage of the archival digital narrative products based on the perspective of cultural radiation force. The feasibility and validity of the mechanism are verified through the case study of the narrative development of Yi black tea archives resources. The development of archival digital narrative products based on layered tetrad emphasizes the unity of the underlying architecture, the uncertainty of user's behavior and the diffusion of the cultural radiation circle, which requires designers to consider product design from both static and dynamic perspectives, thereby facilitating the development of archival resources and the release of archives' cultural value.