Japan's popular logic game comes to iPhone and iPod touch courtesy of Electronic Arts. Key features include a touch-based interface, which involves tapping your finger to highlight a square and then one of the numerals displayed on the screen. Thousands of grids are available on a choice of five difficulty levels. Helpful features include error checking, automatic annotations, and individual cell hints. Track statistics such as fastest times for each game, and select the "newspaper" option to solve puzzles from your favorite print source. ~ Scott Alan Marriott, All Game Guide