Addictive arcade rhythm game which, while simple on the surface, demands speed and precision once you move from easy/normal difficulties to hard/oni. The standalone package is solid at 74 songs available + a decent online mode + a bunch of rhythm heaven-style multiplayer minigames, but there's about $200 worth of DLC with all manner of songs, from anime music, to remixed classical pieces, to touhou music, to songs from the taiko series' past on offer, and many more (although be aware there's a number of songs only available in the Japanese version).