This game challenges you to fill a grid with numbers from 1 to 9. Your goal is to make the sum of numbers in each row and column equal a given clue, ensuring no number is repeated within a sum.
2.3(4 ratings)
Free
Best games like Opdoku = Calcudoku + Mathdoku
9+ similar games compared and reviewed
4.1 avg rating
9 free games
Updated August 2026
Whether you want more options like Opdoku = Calcudoku + Mathdoku or a completely different take on the same concept, our curated list of 9+ similar apps and games has you covered. Updated for 2026 with the latest ratings and comparisons.
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This is a strategic color matching puzzle game where players tap cells to change their color and match three or more adjacent tiles of the same color to clear them. The objective is to achieve high scores by clearing as many tiles as possible before no more matches can be made. It offers offline play and includes a stats tracker for scores.
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A logic-based puzzle game where you fill a grid with two colors based on specific rules. It's similar to Sudoku and offers a "How to Play" guide with solving strategies. Track your progress with a stats tracker and play online or offline.
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