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"Non-player characters" as a book category centers on stories told from the perspectives of background or supporting figures—literal NPCs in video-game-like settings, AI and simulated beings, or real-world analogues who live at the margins of a protagonist-driven plot. These books probe questions of agency, identity, and morality as characters built to serve others gain self-awareness, resist scripts, or reveal hidden histories; they often blend speculative fiction, metafiction, satire, and social realism. Expect deep worldbuilding that reframes familiar events through sidelined eyes, playful examinations of systems and mechanics that constrain lives, and a mix of humor and pathos as formerly incidental voices become central. Readers are drawn to the genre for its inventive perspectives, ethical puzzles about autonomy, and its celebration of overlooked lives that reshape what it means to be a character in any story.

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