I give it an 8. The same mario kart action is there, and it's great. The expanded number of tracks is awesome also. Though I must admit, I found the kart building gimmick to be more of a nuisance to me than anything, and the character selection wasn't so great. Mario and Peach both come in 4 flavors, and bowser's kids take up almost 2 rows themselves. For having so many selections, it actually feels like there are fewer racers than there were before. Still a great game, but not my favorite mario kart.
Definitely a worthwhile play if you liked Enemy Unknown. Took a lot of the ideas I would have liked in the game and added them. Still a few things I'd wish for, such as a standard melee attack, but what game doesn't leave you wishing it had just a little more?
Well constructed, fun to play. Slightly miffed that a coop mode was advertised, but I can't seem to find it. Others tell me it doesn't actually exist. If that got fixed, I'd give it a 9, but for now, a 7.