System novels are a cornerstone of modern web fiction, blending traditional storytelling with the addictive mechanics of video games. In these stories, protagonists are granted a mysterious interface—often called a 'System'—that allows them to track their progress through numerical stats, skill trees, and inventory slots. Whether it’s a LitRPG apocalypse or a transmigrated villain utilizing a 'Great Villain System,' the core appeal lies in the transparent and rapid character progression. Readers are drawn to the satisfying loops of completing quests, earning rare loot, and unlocking 'cheat' abilities that allow heroes to overcome impossible odds. From leveling up in secret to navigating complex mission parameters, System novels offer a uniquely structured power fantasy where every effort yields a tangible, data-driven reward.