Mario Kart Wii: Undeserving sales

[Kenology]

TheShape31 said:

 

It's called bundling.  It works quite well, I hear.

But wasn't it long past 20 million before it was bundled though?  I believe it was. 

So I don't think bundling (in one region?) is the main reason why it sold so much.  It sold because it's a great game.