Open-world video games are inhabited by vast crowds of computer-controlled characters. These animated people—called NPCs, for “nonplayer characters”—populate the bars, city streets, or space ports of games. They make virtual worlds feel lived in and full. Often—but not always—you can talk to them. After a while, however, the repetitive chitchat (or threats) of a passing stranger forces you to bump up against the truth: This is just a game.  It may not always be like that. Just as it’s upending other industries, generative AI is opening the door to entirely new kinds of in-game interactions that are open-ended, creative, and unexpected. Future AI-powered NPCs that don’t rely on a script could make games—and other worlds—deeply immersive. This story was written by executive editor Niall Firth and narrated by Noa - newsoveraudio.com