Picross DS

Create pixel-perfect images with logical reasoning and a stylus. That's it. By using the numerical clues on the top and side of the grid, players fill in blocks to create pictures.
For example, if you're working on a 5x5 grid of blocks and one of the cues has the 5 number on the side, the entire row of blocks is filled in. From there, look at the top and side numbers to hunt and peck the blocks and fill them in appropriately. Further, if the number on the side is 1 2, that means there's one block filled in on the row followed by a 2-block fill-in elsewhere along the line. By using reasoning and process of elimination, the rest of the blocks are gradually filled in by way of common sense and row/column inspection. «NCS Game Notes»