Worldbuilding isn’t just about building the settings or the cultures of the world you’re populating. Character histories are important, and your character is going to have preexisting relationships prior to the start of your story. Those relationships shape your protagonist and therefore impact the plot, especially so in character-driven stories. Red Dead Redemption 2 (RDR2)is a character-driven plot (I would argue that most good narrative games are character-driven) that focuses on the player character, Arthur, and his relationship with the gang’s leader Dutch.