Sudoku Uno is described as 'Elegant, free Sudoku game. It creates an unlimited number of Sudoku boards for you to enjoy. Since it knows how to solve Sudoku, it can tell how difficult a game nd provide hints that will help sharpen your skills' and is a Puzzle Game in the games category. There are more than 25 games similar to Sudoku Uno for a variety of platforms, including Android, Android Tablet, iPad, Web-based and iPhone apps. The best Sudoku Uno alternative is LibreSudoku, which is both free and Open Source. Other Sudoku Uno like games are Sudoku Challenge, Sudoku & Variants, Gauguin and Open Sudoku.