Broad agency is important to have in a video game. The ability to change your environment and change how you interact with it helps to set the game apart from how the player will experience one game over other games. That’s not to say that agency is the ultimate goal in all games. Plenty of games have very minimal agency and are still fun, ala Super Mario Bros. Agency is just another vector to follow in the pursuit of why we enjoy certain games. But the point of this isn’t to write about the player’s agency because that gets entirely too much focus. The agency of those that the player interacts with is equally important to focus on because it determines how the player will interact with the environment as well. The agency of the NPCs (non-playable characters) changes the agency of the player by changing the rules of interaction within the game.