Pic-a-Pix Color is an interesting twist on the genre and creates an entirely new way to look at the logic puzzles.
Note that these impressions are from the demo of the game. The full version of the game is also available in the eShop.
Pic-a-Pix are logic puzzles that form pixel-art pictures when solved. Pic-a-Pix are sometimes known by other names, such as Picross. Nintendo has released quite a few Picross games, including a free Pokémon Picross game as well as My Nintendo Picross: The Legend of Zelda: Twilight Princess.