"Sudoku by Nikoli V" includes 12 types of puzzles and a total of 1200 additctive challenges, carefully produced by the paper puzzle veteran "Nikoli". Puzzle games included are the world-famous Sudoku, Akari, Kakuro, Slitherlink, Nurikabe, Heyawake, Masyu, Hitori, Yajilin, Numberlink, Shikaku, Hashiwokakero! Each of these 12 carefully-produced types of puzzle brings you distinctive fun.