MathDoku
MathDoku is the best online Sudoku game that offers challenging puzzles made up of numbers and mathematical operations. You can enjoy this free game right from your browser, without the need to download or install anything. With 3x3 grids, each containing different numbers, you must fill in the empty spaces by using the correct mathematical operations. Additionally, the game features two difficulty levels, allowing players of all skill levels to enjoy the addictive nature and size of the puzzles. So, if you're looking to exercise your brain and test your Sudoku skills, MathDoku is the perfect online game for you.