The recently released Grand Theft Auto: Chinatown Wars is one of only a handful of mature-rated titles for the Nintendo DS, so the industry is watching closely to see if the traditionally family-friendly market can support such titles. While sales have not been stellar, they haven't been terrible either, easily outperforming previous M-rated titles. If they continue to improve, it's possible we'll start seeing a more consistent effort for "serious" games on Nintendo's portable console. "In the end, Singer said Nintendo hopes that the sales story of Grand Theft Auto: Chinatown Wars will be an encouraging one for game publishers. 'I think strategically, this is a very important game because it helps send the message that great M-rated content can come to the platform and will find a home.'"