Get ready for next SnowGrains, coming from Qperience and SnowGrains. Now in beta phase testing. Coming to Android in a week!
The goal of picross is to find out the positions of the right blocks from the grid using the hints presented in the edges. There's always an image hidden in the grid and your job is to find it. More information about picross from http://en.wikipedia.org/wiki/Nonogram
Nonogram, Paint by Numbers, Griddlers, Pic-a-Pix, Picross, Hanjie, Logic Art!
Call it what you want but you are always really pushing the boundaries of your brain when solving these graphical puzzles. Nothing makes you feel smarter than filling in those squares that, by process of elimination, have to be filled.