Seriously, if you have a Club Nintendo account, a 3DS and 100 coins, you have to give this game a shot: http://shigeruslist.com/2012/03/30/marios-picross/ be fast though, you've only got until the end of today to grab it with Club Nintendo coins!
I think I'm hooked on Picross in general now... I'm bummed this didn't catch on in the U.S. back in the day.

