An original rhythm game concept executed very well, newer charts are really high quality, and the game is updated pretty often, with such new charts, stories, features, and quality of life stuff.
I highly recommend it, it's really good.
Only complaint is the amount of paid content: More content IS good, but to buy everything in the game (sales pretty much only happen during the game's anniversary) it's really too expensive. Not nearly as bad as something like groove Coaster, but still bad nonetheless.