I'm developing a game called [Dani's Race](/games/Dani's_Race), which is supposed to be a [GTA clone](/search?fc=on&text=GTA). A game where you can run around a city and cause all kinds of mayhem. And a humongous part of the experience of such a sandbox world simulator are the reactions from the in-game non-playable characters. If you steal a car, what will be the reaction of the driver? What will the police in the game do? What will other drivers do if you hit them on the road? All of this is a part of my daily problem-solving when working on Dani's Race.