Mario kart wii is definitely one of the best online games for the wii, and it is also one of the funnest!
Here are a few things different about mario kart wii:
~Wii wheel
~Bikes
~Ability to perform tricks/stunts
~A total of 26 characters
~Amazing online play (Up to 12 players)
...And more
Now lets get onto the review:
Gameplay 9.6/10 - When you play the game, it may feel a bit weird at first, but once you get use to it, it's really fun! Esspesially with the wii wheel, it works great! It does take a while to get use to, but its fun. I prefer the gamecube controller, because I play better with it. The only problem I have with gameplay is the items, which can get very unbalanced. Whether your getting hit with red shells, or blue shells, the items will get extremely annoying at times.
Sound 9.2/10 - I don't really have much to say, the sound is pretty good. I like how the music gets faster every lap. I don't like some of the character voices, those get can annoying. But overall it's pretty good, but not the best.
Graphics 9.0/10 - The graphics were awesome in my opinion. They aren't super mario galaxy graphics, but they are good enough. The only problem I have is the way the characters look. They don't look bad, but they could of put more detail... Overall the graphics are just fine.
WI-FI 9.8/10 - Online in my opinion is one of the BEST features in mario kart wii. It is one of the best online games i've ever played! It is extremely addicting, and you will be playing it for a long time. You can race up to 12 players, and whats really cool is that you use your mii's as your profile name. I think thats really cool, because you can show the world what you look like! Also, there is a new rank system. Mine is 7800 atm, it's a great feature, because it shows how good you are. One more thing I forgot to mention, is the battle mode. Now battle mode isn't that bad, even though it's team based, you will still enjoy it. The only thing I don't like is that it's timed.
Well, thats basically it, mario kart wii is a must have for any wii owner. It's very fun, and it will definitely be one of your favorite racing games!