Due to the recent advancements in 3D graphics technology, the visual realism of games has significantly improved. The next step in enhancing game realism is to introduce artificial intelligence (AI) into games. This book is aimed at both programmers who are new to game programming and game programmers who need to understand AI technology, introducing both deterministic AI techniques (traditional) and non-deterministic AI techniques (new). The book explains "pursuit and evasion," "pattern movement," "flocking," "movement based on potential functions," "basic pathfinding and waypoints," "pathfinding with the A* algorithm," "AI scripting and scripting engines," "finite state machines," "fuzzy logic," "rule-based AI," "the basics of probability," "decision-making under uncertain conditions - Bayesian methods," "neural networks," and "genetic algorithms," among other topics.