Basically the game is being punished for being too difficult. Like all Mario Kart games, if you get good enough, you can get such a big lead that the blue shell doesn't matter. That said, 150 cc is pretty tough, but the hardest difficulty should be. The reviewers couldn't master it in a few hours and said that it was unfair. Like any good racing game, it takes a lot of practice. I'm starting to think that people want a win button in games. That would be hardcore I suppose.
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