A must have for any wii-owner. A great game to buy but only to keep you occupied until Super Smash bros hits the market.
The graphics were very good but i think that Super Mario Galaxy was a little bit better which is a bit disappointing for a newer wii game. Also the amount of time I spent on this game was okay but the online game play fills in for this (i'll just remind you that i haven't unlocked all the characters yet so I've still got work to do). Lastly the race tracks were good but I can't comment too well on this because i don't really own any other Mario kart games.
If you buy this game the main feature is the grand prix. There are three different modes, 50cc, 100cc, and 150cc a.k.a easy, medium and hard. 50cc was great to start with but became easy once i became faster and raced better. 100cc was good but i always seemed to win the tournaments on the first go. Then came 150cc which was a big challenge. The AI for 150cc was very incomplete "your coming first, then you get hit by a bomb and everybody, yes all 11 racers pass you". But this doesn't ruin the game. Also here's a tip for when you are gonna try 150cc, drop the wii-wheel and use the nunchuck, it's much better!
That reminds me, i haven't said much about the wii-wheel, the wii-wheel is good for a better driving experience but you don't really need it so i wouldn't worry about wasting 20 dollars on buying another one for your friends when they come over.
All together Mario kart was a great game, a must have for wii-owners. It's not a waste of money and it even lets you have fun playing it. So if you're reading this and you don't have the game buy it, it will keep you occupied for some time!