Had heard about it for years and decided to start it up last month to kill time til' the Thousand Year Door remake, and boy am I glad I did. The world, characters and lore are so charming, well-written and designed, the soundtrack is awesome. You can tell it's a real labor of love.
A true spiritual successor to the first 2 Paper Marios, but is still unique enough to stand on it's own.
If you love the aforementioned games, or turn-based story rpgs in general, and want to support the indie developer: it is an absolute STEAL at $25. You definitely get a full game's worth of content.
I've been liking Born of Bread if you're looking for more TTYD style games. It sold disappointingly poorly based on some bugs, but those are fixed now. The music and gameplay are fantastic.
I've heard of it and know it's on sale rn, might give it a look!
There was a demo at one point, may still be available on steam.