A former dev has proposed which the GTA 6 map needs to be scaled-down 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 way of its significant scale. https://bookmarkingfeed.com/story19835554/what-does-grand-theft-auto-6-ka%C3%A7-tl-mean