Wordoku is a free, browser-based puzzle game where classic Sudoku meets words. Instead of numbers, Wordoku uses letters from a single nine-letter word, with each letter appearing exactly once in every row, column, and 3×3 grid — following the same logical rules as traditional Sudoku.

The result is a puzzle that blends logical reasoning with word recognition, creating a fresh challenge for both Sudoku fans and word puzzle lovers.

With over 4,700 non-repeating 9-letter English words to choose from, there are endless puzzles to solve. No accounts. No downloads. Just open the site and start playing.

Learn how to play Wordoku and master the game.