The image features a grid-like puzzle layout with numbered squares in blue, bordered by red lines, and some squares highlighted in green, suggesting a logic or number-based puzzle such as Sudoku

Killer Sudoku

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This game can be installed to your desktop for easy access

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Play Killer Sudoku or Sumdoku

Fill each square with numbers from 1 to 9 so every row, column, and box shows each number just once. A Killer Sudoku grid also has groups called cages, and each cage is marked with its own color. All the numbers inside a cage have to add up to the total shown in the corner of the cage. You cannot use the same number more than once in a single cage.

Click on end game/submit score to add your score to the leaderboard.

The Killer Sudoku game on Play123 has a leaderboard for saving scores.

Game Publisher: Zygomatic

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Looking for more number-based brain teasers? I spend hours playing Killer Sudoku and its challenging cage puzzles. For a similar mental workout try Daily Killer Sudoku challenges that come with fresh puzzles every day. The Sudoku collection has tons of variants - I really got hooked on Sudoku Deluxe with its slick graphics and Daily Sudoku X that adds an extra twist with diagonal rules...