"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 doesn't 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, we're 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.