The game in the preceding screenshot implemented visual and audio awareness for the enemy AI, a feature that later on we'll explore in detail in this book. This feature established the genre that we know today as a stealth game. So, the game uses Path Finding and a FSM, features that were already known from the beginning of the video game industry; But, in order to create something new, they also created new features, such as interaction with the environment, navigation behavior, visual/audio awareness, and AI interaction; a lot of things that didn't existed at the time but that are widely used today in different game genres, such as sports, racing, fighting, or FPS games, were also introduced:
After that huge ...
