Play Sudoku Online — Free, Unlimited, No Sign-up
About Gaming Sudoku
Gaming Sudoku is a free, offline-capable Sudoku game that runs entirely in your browser. Play classic 9×9 Sudoku puzzles across six hand-tuned difficulty levels — from gentle warm-ups to expert-grade challenges. Every puzzle is generated to have a single logical solution, so you can solve each one step-by-step without ever guessing. Auto-save, streaks, statistics, and smart hints are all built in, and you can install the game as a Progressive Web App on any modern phone or computer.
Frequently asked questions
›Is Gaming Sudoku free?
Yes. Every puzzle at every difficulty is free, with no sign-up and no accounts required. You can play unlimited Sudoku games in your browser.
›Do I need to create an account?
No account is needed. Your progress, stats, and streaks are saved locally on your device using your browser's storage, so you can pick up exactly where you left off.
›Does it work offline?
Yes. Gaming Sudoku is a Progressive Web App (PWA). Once the page has loaded once, the game keeps working without an internet connection — on a plane, a train, or anywhere with no signal.
›Can I install it on my phone or desktop?
Yes. On iPhone, tap Share then Add to Home Screen. On Android or desktop Chrome/Edge, the browser will offer an Install button. Installed, Gaming Sudoku opens in its own window like a native app.
›How many difficulty levels are there?
Six: Beginner, Easy, Medium, Hard, Expert, and Master. Each level targets a specific set of solving techniques — Beginner puzzles need only naked singles, while Master puzzles require advanced tactics like X-Wing and chain logic.
›Are all puzzles solvable with pure logic?
Yes. Every puzzle is generated and validated so it has exactly one solution and can be solved step-by-step with logic alone. You never need to guess.
›What if I get stuck? Are there hints?
Yes. The Hint button tells you the next logical step and names the technique used (for example, Hidden Single or Pointing Pair), so you learn while you play.
›Does it save my progress?
Your current puzzle, notes, timer, and history are auto-saved. Close the tab, restart your browser, or reboot your device — the game resumes exactly where you left it.