Yeah it's a full-fledged open world RPG with 5 giant worlds, a day and night cycle, a weather system, a passing year cycle, and aging mechanics, that you use to unlock characters and other stuff in the main game. It's also a mess because they tacked-on a full-fledged open world RPG with 5 giant worlds, a day and night cycle, a weather system, a passing year cycle, and aging mechanics to a fighting game, but at the same time you can't not
have respect for them for attempting something like that. This could have easily been sold as its own thing and yet they included it as a bonus in another game. For free. Something like that is incomprehensible nowadays. The game, or mode rather, is also surprisingly comfy and has almost a dzen effect thanks to its combination of ethereal visuals due to poor draw distance
and a soothing OST.
Truly a bizarre thing and in many ways the definition of the pre-CY era, when you were expected to buy a $60 game and have it be finished, complete and jam-full of content.