A previous dev has suggested the GTA 6 map must be lesser and even more densely packed. On the other hand, as leaks have ongoing to trickle out of Rockstar, modders have recreated the GTA six map in GTA 5's engine which offers a sense of its substantial scale. https://gta-six-shop21863.blogsmine.com/35821634/everything-about-grand-theft-auto-6-website