This is a game with an amazing multiplayer freature and you can also play it online if any of you have Wi-fi!
The reason I put 100 hours or more is because you can keep playing the game even after your done the Gand Prixs.
the Grand prixs are even just as fun as the online. it also unlocks all the tracks you want.
The Wi-fi freature lets you play with all the other players that have Mario kart Wii, and I like this because you don't have to pay for it like "XBox Live".
It's just like the other Mario karts, only the tracks are different and the graphics are amazing for a Wii game.
You can also get other characters by doing certain things.
you unlock courses just by playing them in the grand Prix. My favorite course is The rainbow road course. rainbow road is always differet in different in all the different Mario Karts.
If you need help, just send me a PM. I'm MidgetMan2580