Sudoku Hawaii is one of the Sudoku Games that you can play on UGameZone.com for free. There's nothing more relaxing than playing a few rounds of Sudoku while you are on one of the most beautiful islands in the world. You can play in 3 difficulty levels: Is this your first time playing Sudoku? Then Easy Mode is for you. Are you an expert player of Sudoku? Then you will definitely find a challenge playing in Hard Mode.