I know indeed that Japan has had many picross compilations, but unfortunately, the only downloadable content so far is in the form of Mario's Picross. Two puzzle paks have been released at least (haven't checked in about a week). Now, Mario's Picross was available on the Gameboy Original, so it's doubtful most folks have had the opportunity to enjoy it. It does the Picross job well. I actually liked playing Picross on it in some ways better -- much easier to mark X's. But there you go. I'm hoping we'll see Japanese content, but it looks like they may be prepared to milk Mario's Picross for a while. Mario's Picross had quite a bit of puzzle play, and these puzzle paks have less than 10 puzzles in each one, if I remember right. I'll be right shirty if that's all we ever get.