It's a really fun little rhythm game. It's surprising that this even exists since even in 2015, IA was quite unpopular and wasn't really known by a lot of people aside from stand-out songs. She's definitely my favourite vocaloid in terms of vocal bank, design, and so on. The songs are all pretty good, I'm not sure why I see that point come up so often. Given that IA doesn't even have a very big library. It's a fun rhythm game that I think everyone in the genre should enjoy. The graphics in this game are phenomenal from UI to UX it's just all really nice, fits the IA style so well. Give this a go!