What is it with these people? It is a so-called "Family Group" slamming the game "MadWorld" because it is on Wii and it is M-rated. Why the hell do they have a problem with it? MadWorld is published by Sega, by the way. It is NOT Sony's, Microsoft's, Nintendo's or Sega's job to choose appropriate games for kids. It is the parent's job!
If parents don't want their kids playing M-rated games like this, then DO NOT BUY THE DAMN GAME! No one is forcing you to buy it. Why is always the responsibility of some one else?