Picross DS review at Total Gamer Zone.

"Picross makes its return to the DS and it is far from a shoddy port. Picross DS is a full-fledged game, complete with online play and user-created digital distribution. If you are not familiar with Picross, it’s a puzzle game using a grid with a set of pre-determined numbers, a la Sudoku. You fill in boxes to reveal a picture, such as a star or a phone. This game is an absolute blast, whether you’re pushing through the countless single-player puzzles, battling or sharing with friends over Wi-Fi. For only $20, this is a great steal for you puzzle lovers or anyone in need of a game with plenty of bang for your buck."

Full Source: Total Gamer Zone via Gonintendo