Metallicube on 15 August 2009
It just adds to the game library, making the console look more appealing. It certainly doesn't hurt to make a sequal to a highly successful game like Wii Sports or Mario. Sequals generally don't raise the sales of a console that much, but a game like NSMB Wii, a game that people have been waiting for over a decade, WILL raise sales to a rediculous amount.
