77 songs, 26 of which don't count, 12 of which you have to unlock and a whole bunch of DLC. The first difficulty you'll cruise through, and the second is much, much harder. There's at least one above that. RPG elements, collectible cards, stuff like that. The main attraction is the rhythm gameplay.
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"God Hand is the ultimate expression of the joy of humanity, specifically the punching part of the joy of humanity."-Shigeru Miyamoto