Game of the Year, easily.
Of course, I don't have any of the next gen consoles, if you exclude the 3DS, so I haven't played Bayonetta 2, Sunset Overdrive, or any of those other games people are heaping praise on.
But, still, this game is as close to perfect as possible. I still have to figure out where it fits in my top all time list, but it's easily in the top 20.