This game is what the wii is made for. Lots of tracks new and old and lots of challenges (online and offline) to keep you occupied. With the wheel it makes really fun but if your an old fashioned gamer you can still use a "normal" controller. You can never get board with this with all the different challenges (normal races, time trials etc), and with lots and lots of things to unlock from the easy to the difficult it keeps occupied for hours and thats before you get to the online gaming.
Like the offline game you roughly the same challenges but I think racing against online racers makes this game its more fun and you have racers of all abilitys on there.
So if you got the wii this is a must have and you wont be disappointed.
i love this game so much, its one of my most played ones i have for wii. anyone can play this game and you an complete all the courses to get new characters which is fun or you can go online and play with people from all around the world, or you can simply have a few family or friends play with you. its a fun game and simply a must for wii and mario fans