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I'm giving you a 5 cause it's a demo and I would have to pay to play the full version. As such I can only rate the portion I have played and since I don't have access to all the levels and features I'm only giving a half of my full score I would of given it if I had the full version. As such think of the 5 as a 10 (which is what I had given it if it was the whole game)
From what I had played, its fucking addicting as hell and the music was great. Graphics was top notch as well.