A previous dev has suggested that the GTA 6 map must be lesser and much more densely packed. Even so, as leaks have ongoing to trickle outside of Rockstar, modders have recreated the GTA six map in GTA 5's engine which gives a sense of its substantial scale. GameSpot https://louisowair.pointblog.net/what-does-grand-theft-auto-6-trailer-mean-80410502