The open world of GTA 6 is set to be the largest in the series, with a map that is over 30 miles and includes numerous interior locations. Initially, the game was planned to feature multiple cityscapes inspired by North and South America, but the developers decided to focus on a single, expansive map to reduce development crunch. This map will be a fictional city with surrounding areas reminiscent of Miami, offering players a rich and diverse environment to explore.