
Block Blast
Geometry Game

Updated Aug 15, 2025
Are you ready for the ultimate brain challenge? Sudoku Online is a classic logic puzzle game designed for players of all skill levels. Perfect for free play, this HTML5 game offers a satisfying mix of concentration and strategic thinking.
* Five Difficulty Levels: Choose from Easy, Medium, Hard, Expert, and Master to match your skill.
* Clean and Intuitive Interface: Enjoy a distraction-free experience with a crisp design.
* Undo Button: Correct mistakes effortlessly and keep trying!
* Pause & Continue Timer: Perfect for short or long sessions.
* Three Hints: Get assistance when you need it.
* Notes Feature: Visualize solutions and eliminate possibilities.
* Limited Mistakes: Only 3 mistakes before game over - adds pressure and fun!
Fill the 9x9 grid with numbers 1-9, following these rules: Each row, column, and 3x3 block must contain each number only once. It's a pure logic puzzle – no guessing!
Sudoku Online is a fantastic way to exercise your mind, relax, and enjoy a classic game. Download now and start your puzzle adventure!
Stay in rhythm, avoid rushing early sections, and watch obstacle patterns before committing to longer runs.
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