As we have discovered before, crowd interactions are a real-life matter, but it can be found in video games, especially those that relies on human-like aspects. Because of the popularity of open-world maps, crowd interactions became a very important aspect when developing the game, because the AI agents of the game are constantly sharing the same space. This means that almost every open world game has the necessity to plan a crowd interaction system.
A very popular case of crowd interaction system on a video game can be found in the Assassin's Creed series. The non-playable characters walk around the map in groups, and in a simple way they avoid collisions and interact with the environment. This helps create a realistic atmosphere to the game, a crucial point that can make the game believable and submerging the player into a virtual world:
Not only can we see group interaction in the general population of the game, but also in the guards and...