Oekaki is another new game today, and is a puzzle game often called “Hanji” or “Picross”. Basically, you start with a grid. On the end of each row and column are numbers that tell you how long a line of squares in that row or column is, and you have to fill them in to fit the rules. It usually gives a simple “pixelated” picture.
For some reason, this DS variation seems to have a sort of card battle mode. Bizarre.
Anyway, I completed the first puzzle in “Easy” mode.