3-Tsu no Puzzle - Nikoli no Puzzle Variety (Japan) (３つのパズル―ニコリのパズルバラエティー) is a Nintendo 3DS game developed by Hamster Corporation and published by Nintendo. The game is based on the classic number puzzle Sudoku, and features a variety of puzzles from the popular Nikoli series, including Sudoku, Hashiwokakero, Heyawake, Nurikabe, Akari, Yajilin, and more. Players can choose to play the puzzles in both classic and modern modes, with the classic mode offering a more traditional experience, while the modern mode allows for more customization and control over the game. The game also features a variety of difficulty levels, from easy to expert, so players of all skill levels can enjoy the game. Additionally, the game features a full-featured tutorial mode to help players learn the basics of the game, as well as a variety of hints and tips to help players make the most of their gaming experience.