Enthrall is a first-person, survival horror, action, psychological video game with a photorealistic graphic style. The story is about a person who trapped in an abandoned asylum (madhouse), and he lost his memory. By players’ progress, the story will narrate protagonist backstories, asylum mysteries, and the main characters’ adventures The gameplay includes survival-horror basic core mechanics, such as inventory system, hiding, and many puzzles to solve. Also, in the update sanity system, and many other features will be added. The final early access version will support RTX. The developing process is based on the spiral developing method and component-based mixed with indie game design and early access concepts, and all the process is documented for presentations. Besides, multimedia support and PR are considered for this project.