How much will NSMBU sell during his lifetime?

[IIIIITHE1IIIII]

supermariodance said:

NSMBU passed 1m sold last week for sure.I also want to congrats NSMBU for doing it.

I just want to ask you ,VGC members,your opinion on how much NSMBU will sell during his lifetime.

I will go with 20m but I don't know maybe more or less! 

Now discuss..

PS:Finally my first threat!!

Threat???  O.O

 

Seriously though, I think it will sell about 20-25 million lifetime. One has to remember that New Super Mario Bros Wii wasn't released until 2008, while this game will exist throughout the console's entire lifetime. So considering that the Wii U is expected to sell below Wii numbers I only expect a minor decline in the end.