Zendoku is a puzzle game that combines Sudoku gameplay with martial arts themes. Released in 2007 for the Nintendo DS, the game infuses the classic number-placement challenge with a light-hearted storyline and battle features. Players solve Sudoku puzzles under various conditions to defeat opponents in martial arts-themed challenges. The genre merges brain-teasing puzzles with action elements, aimed at providing an engaging experience for fans of logic games and casual gaming audiences alike.