Hatena Satena (ハテナサテナ) is a Game Boy Advance puzzle game by Japanese developer Hudson Soft with design elements courtesy of Super Lovers. A version has also been released for mobile phones in Japan. The gameplay can be described as a mix of Picross and Minesweeper. The art design is similar to that of Super Milk Chan. Source: Wikipedia, "Hatena Satena", available under the CC-BY-SA License.