How we ranked the best sites to play Sudoku online
Playing Sudoku online should be frictionless — no ads interrupting mid-solve, clean grids, keyboard shortcuts, and a proper range of difficulties from Easy to Expert. We tested every site on this list across multiple devices and ranked them on puzzle quality, interface cleanliness, feature set, and how reliably they offer unique (non-repeated) puzzles.
Whether you want a quick Easy before bed or a daily Expert challenge, these are the best places to play.
Sudoku.com
The most popular destination for classic Sudoku with multiple difficulty levels.
Sudoku Exchange
Clean, modern interface for sharing and solving Sudoku puzzles.
WebSudoku
Billions of free puzzles featuring the famous 'Evil' difficulty setting.
AARP Sudoku
Keen on brain health? A favorite for casual daily solvers.
247 Sudoku
Seasonal and classic Sudoku puzzles with a simple interface.
CardGames.io Sudoku
Part of a massive collection of classic browser-based games.
Arkadium Sudoku
High-quality game graphics and smooth browser performance.
Sudoku Mood
An elegant, distraction-free environment for focusing on your solve.
Sudoku Academy
Master your skills with structured puzzles and learning tools.
The Sudoku (Pogo)
Earn tokens and badges while you solve on the Pogo network.
Daily Sudoku
One of the oldest and most reliable daily puzzle sources.
Sudoku Bliss
Relaxing and aesthetically pleasing interface for classic play.
Sudoku Kingdom
Join the Sudoku Kingdom and earn points for your puzzles solved.
1sudoku
Play against the clock or relax with several difficulty tiers.
SudokuOnline.io
Simple, lightweight, and works perfectly on mobile browsers.
Lovatts Sudoku
Daily puzzles from the well-known crosswords and puzzle brand.
Sudoku Rocks
A minimal, modern take on the classic grid layout.
Sudoku.cool
A fun and fresh interface for younger or casual solvers.
Sudoku Quest
Adventure-style progression through thousands of levels.
BrainBashers Sudoku
A popular logic site with daily puzzles in many sizes.
Sudoku Epic
Massive variety including 4x4, 6x6 and Wordoku.
Sudoku.name
A straightforward site offering billions of standard Sudoku grids.
SudokuConquest
A classic portal for daily challenges and printable games.
Sudoku Dragon
Deeply technical site with software for serious solvers.
MindGames Sudoku
A hub for various brain games including classic Sudoku.
Braingle Sudoku
Part of a massive community for riddles and brain teasers.
Sudoku Up
A massive collection of puzzles with detailed statistics.
Sudoku Mania
Australian-based site with competitive daily rankings.
Simply Sudoku
Lives up to its name with a no-frills, focus-only design.
Sudoku Garden
A peaceful place to solve your daily German puzzles.
Sudoku-World
Connect with solvers from around the globe.
Free Sudoku Online
Classic puzzles that are completely free to play forever.
Brainy Sudoku
Smart puzzles for smart people.
Find Even More Sudoku Resources
Browse our full hand-curated directory of 100+ Sudoku sites, apps, and books.