Sum Master

Sum Master is a math puzzle that puts your logic and number skills to the test. Every grid challenges you to find the perfect combination of numbers so each row, column, and colored region adds up to its clue. It's a clever way to sharpen your mind while enjoying a relaxing, brain-boosting experience, all with a single unique solution per puzzle. To play, simply select numbers in the grid so the total in every row matches the number on its right, every column matches the number at the top, and each colored area adds up to the small number inside it. You can jump in and play this free, no-download game online right in your browser, whether you're on desktop or using your Android or iOS device.