TLDR: solid, Playstation era style RPG made by the creators of the Final Fantasy series (even the music) back before the series turned into whatever it is today. With that said, don't expect anything life changing and it is definitely held back by the fact that it was first released as a mobile game with all the limitations that entails.
Long version - this is another game where I don't care for pass/fail steam reviews as I'd rate this as something like a B/B-. Definitely not a bad game but also certainly a lesser game than the late 90s/early 2000s Final Fantasy games from which it draws inspiration.
What I like: I really dig the dioramas that form all of the maps. They are a little low res but even that kind of calls back to the low res pre-rendered backgrounds of many Playstation games and they give the world a very unique feel while also allowing the environments to be a little more interactive since they are actually 3D and not a static 2D jpeg that you walk around on.
The story also has been enjoyable so far which is refreshing even if it drives me crazy that the main character won't just tell people what is wrong with him instead of making everyone play some awkward guessing game. One particular element of how the story is handled that I like, is the return of the narrated short stories from the Lost Odyssey (and I believe Nier did something like this too).
The game's solution to random encounters is interesting in that it lets you amass fights as you encounter them and then fight them all at once when you are ready (within some limitations). It is different and I do enjoy how it plays out.
The music is also enjoyable as befits a Nobu Uematsu soundtrack though, as others have mentioned, the battle themes are a little weak but this can be overlooked since the game lets you substitute a bunch of other, much better, Uematsu tracks in their place (and I recommend doing this).
What I don't like: the game makes me a little motion sick with the way the environments rotate quickly and unexpectedly and it also is a little difficult to control when this happens as it sort of changes the orientation of your analogue stick based on which direction you were going before the screen rotated. If you are very susceptible to motion sickness, you may have issues. I'm also not wild about the party being limited to 3 people at once as this is an element of system limitations in the Playstation era that could have just stayed there. Even on a mobile device there is no reason that more party members couldn't have been displayed at once, particularly as you are regularly fighting 15+ monsters on the screen at once as you store up random encounters.
Speaking of mobile devices, this is still very clearly a port from a cell phone game and the UI looks very mobile and I suspect that the movement control issues may stem from this also.
And finally, not strictly speaking, a "con" but a lot of what is going on here is really pretty basic JRPG fare just with very nice presentation and clearly made by veterans of the genre so it avoids any game ruining mechanics as sometimes occurs with RPGs made by smaller teams. So don't expect a really deep job system or even a particularly innovative combat system (oh and random encounters are a thing here). Still, the modern gaming landscape is a sad enough place that I'm really grateful to get a game that doesn't have game breaking bugs, shady monetization or just a bunch of mechanics that feel out of place and really don't work.
Definitely give this one a try if you at all enjoy JRPGs though I could also see waiting for a sale if you've got other games on your plate at the moment since this isn't something I'd drop everything I was doing to play.