The North America passwords are:
34111425
75603372
72005601
96734255

I've used them and they worked, they unlock the locked levels in some areas.

The PAL passwords are:
89907383
18587211
74326715
77742314

The Japan passwords are:
80930344
72398476
75946452
15768352

They also have passwords for other areas, but those areas are unknown and the passwords untested, so I'm not sure what's going on there.

I just downloaded this yesterday! Haven't played it yet, but I love the hell out of some Picross.

I even have a couple physical nonogram books.

It's pretty cool, though I've hit the freebie wall, so it's taking me a while to make any progress, lol

Oh, that's cool! I didn't know there were books with the same idea!

Same on the freebie wall -weeps softly-

If you could go through levels again for more picrites it'd be one thing but

Yeah, that would be great if they let you get a few more, but, nope, a handful of picrites a day is all they'll allow you.

Yeah, they were pretty popular in Japan a few years ago similar to how Sudoku was over here. The official term for that sort of puzzle is a nonogram. Nintendo's made a few Picross games, too.

There's a Mario one on the original Gameboy I really liked. 100%'d it.

Oh, okay, that's really cool! ^_^ I didn't know they were called nonograms, that's neat! Awesome, I've heard of Picross before, but I haven't played it until now.