Healer is a single-player action roguelike game in which players assume the role of a doctor, selecting diseases from medical records and controlling immune guards equipped with diverse weapons to combat pathogens within the human body. In this game, the setting revolves around exploring different human body parts, fighting off infections, and managing health through strategic gameplay. It stands out with its unique medical theme, combining elements of action and roguelike gameplay, featuring procedurally generated levels, a variety of immune units, and a focus on strategic resource management to effectively eliminate diseases.