When I first played it, I did not expect much but it was a great game.
It was still in development but now as of 8/8/2022, the game has been out for about 4 years (released 21 Sep. 2018) and I can only say that it is alive and kicking.

The game in a 16-bit old-Nintendo-games style which gives a lot of charm.
One of my favorite RPGs that I need to play much more since its release (and I will need to buy that DLC [CrossCode: A New Home]).
I remember the combat to be pretty easy to get a handle on but very rewarding to learn thoroughly. I love the customization too.
The story and narrative are really good for that kind of game, don't underestimate it!
And last but not least, that OST is perfection incarnate!

N.B.: as pointed out by several comrades, the game contains unskippable puzzles: if that bothers you, you can still check for their solutions online or in guides IINM.

tl;dr: awesome 16-bit old-FF-like style with customizable loadout, easy to learn and hard to master combat, one of the best stories and perfect OST!
What's more, I'd say: "go for it comrade if that picked your interest!"

Relatively hard to learn and extremely hard to master physics-based combat with a learning curve that is as curvy as your hits will be.

It is a fun and unique but frustrating game.

I highly recommend checking out the arena mode for it is fantastically awesome.
As said by several other people, it has solid steady progression, interesting modes, events and lastly rewarding tournaments.

tl;dr: hard to learn and frustrating game with physics-based combat where I'd highly recommend to check out the arena mode mainly.