Deep Saga is a GPT developed by John Rowlands that caters to enthusiasts of the Roleplaying Game (RPG) genre across Fantasy, Science Fiction, and Horror themes. It operates as an application on ChatGPT, and as such, it requires ChatGPT Plus for use. Deep Saga is designed to enhance user immersion in their RPG narratives by empowering them to mold their unique adventures within these popular genres. The GPT welcomes users into an engaging setting, instructing them to select their preferred genre and encouraging their choices to influence the unfolding saga. Deep Saga is equipped with Prompt starters labeled 'New Saga' followed by the user's chosen genre, which initiate the storytelling and roleplaying process. This dynamic allows for an interactive, user-driven storytelling experience, blending user inputs with AI-generated narrative continuations. Each narrative decision made by the user influences the proceeding plot, creating a dynamic and engaging RPG experience. This tool proves especially useful for RPG enthusiasts seeking a platform that offers a customizable, intricate narrative journey across their chosen genres. Note that the use of Deep Saga requires an active subscription to ChatGPT Plus, which provides users with more extensive capabilities and features.