You have spent forty hours upgrading your character, mastering complex combat mechanics, and acquiring the ultimate, world-shattering weapon. You face a generic, low-level bandit in the late game, unleash your most devastating attack, and watch in horror as only a tiny fraction of his health bar vanishes. The enemy isn't smart, fast, or tactical—he just possesses a mathematically absurd amount of hit points. This is the plague of the "Bullet Sponge," the laziest and most frustrating mechanic in video game design. Instead of programming advanced AI or creating intricate behavioral patterns, developers artificially inflate enemy health pools and armor stats to stall player progression. This mathematical bloat completely destroys immersion, turning thrilling combat into an exhausting, repetitive chore of attrition. This book deconstructs the flawed mathematics of artificial difficulty. We examine how dynamic level scaling, endless health bars, and arbitrary damage resistance break the fundamental psychological contract of risk and reward in gaming. Learn how true difficulty is engineered. By studying the contrast between cheap numerical inflation and genuine mechanical challenge, designers and players alike will understand what makes a boss fight feel profoundly rewarding instead of punishingly tedious.