thisyes, midgar is tunneling because its a city....
then it is open world.. however.. they decided to fully explore midgar...so first game.. midgar is the whole world.
disk 1
stop shinra (midgar)
disk 2
go after sephiroth explore the world with the branco and the sand buggie
after midgar they have the rest of the world for the next disk 2
Aeris death should be the end of this disk
disk 3
Cloud and co get the truth of his past Cloud Cloud will fall but will rise and defeat sephiroth
open world again but now you get the Highwind end game content with The Weapons Large Boss fights final limit breaker quest and Final Battle / stop the meteor storyline



