Killer Sudoku: Sum Cages

Give your mind a satisfying challenge with Killer Sudoku. Fill a 9×9 grid using the familiar rules of Sudoku, then solve each dotted cage so its numbers add up to the small sum shown in the corner. No digit can repeat within a cage. Start at your own pace with four difficulty levels: Easy, Medium, Hard, and Expert. Each puzzle has a unique solution. Use notes to work through possibilities, undo a move, or ask for a hint when you need one. Your unfinished game is saved so you can return to it later. Track your completed puzzles, best times, win rate, and streaks. Make the experience your own with light and dark themes, sound and haptic settings, and optional mistake checking. Whether you have a few minutes or want to settle in for a longer solve, Killer Sudoku offers a focused way to enjoy numbers and logic.