Non-player characters (NPCs) are characters in video games that are not controlled by players. Instead, they are programmed by the game developers to interact with players, provide quests, or enhance the storyline. NPCs can vary in complexity, from simple characters that offer basic information to more advanced ones that have intricate backstories and behaviors. NPCs play a crucial role in creating an immersive gaming experience. They can be found in various genres, including role-playing games (RPGs), adventure games, and simulation games. By engaging with NPCs, players can gather information, receive items, or advance the plot, making them essential for gameplay progression.