Well, there IS a demo you can play for up to three hours. Even allow you to port that save to actual game if you get it!
But the gist of it is that it has 8 main characters, each with their own Job. As befitting the name Octopath. You start the game by picking one of them as your main character (and you're locked with it until their story is complete), finish their first chapter... And then you're free to go where you want. You can go get the others characters right away. Or you can go explore as well wherever you want. Of course, stray too far and the monsters will destroy you, but still, each area warn you of a level you should be at to handle it.
And like old RPGs, it doesn't tell you about hidden mechanics. Like finding sub-Jobs to assign characters to expand what each can do.
Anyway, have the character trailer at least. But the best way is probably to experience it.
