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SumDoku — A Fresh Spin on Sudoku
SumDoku takes the logic puzzle you already know and adds one new rule: every row and column must not only avoid repeating numbers — it must also add up to the exact same total. Simple to learn, satisfying to master, and built as a single self-contained HTML5 file with zero build tools and zero dependencies.
✨ Key Features
3 difficulty levels — Easy (4×4), Medium (5×5), Hard (6×6)
Separate screens — Start Menu, How to Play, Settings, and Game, each with its own clean layout
In-game pause menu — Resume, Restart Level, Sound toggle, Home
Hint system — 3 free hints per round reveal hidden row/column sums, plus a rewarded-ad flow to earn more (simulated ad included, real ad SDK integration documented i
