Japanese DS games for learning Japanese.
 

Could someone please suggest to me a title of DS game that is good for learning Japanese for my level (300 basic kanji, all hirigana and katakana and vocabulary of... 2000ish). It would be great if the game was very large and could carry someone to a much higher level of Japanese than my own currently.

I am talking about games specifically for learning Japanese though, but other games that could help are appreciated.