Hitori by Nikoli contains 50 sudoku puzzles. Hitori is a puzzle in which you fill in any unnecessary numbers, making sure that the same number doesnt appear twice in the same line. Once you get the hang of it, you can feel the joy of figuring out the many various gimmicks thought up by the creator. This is a puzzle for real connoisseurs. To ensure your long-term enjoyment, were prepared both a Stage Clear mode and a Random mode. In Stage Clear mode, you progress by clearing puzzles one by one, and in Random mode puzzles are generated at random. Please enjoy this high-quality Hitori game.