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Sudoku Offline is a complete, ad-free sudoku game you can play anywhere - no internet, no wifi and no sign-up needed. Classic 9x9 sudoku puzzles, 8 puzzle types and a new daily sudoku challenge every single day. Every puzzle here is checked to have exactly one solution, so you never hit a dead end or have to guess your way out. CLASSIC SUDOKU, FOUR DIFFICULTIES Play classic 9x9 sudoku in Easy, Medium, Hard and Expert. Easy sudoku for a calm five minutes on the sofa, expert sudoku when you want a real brain workout. The difficulty curve is tuned by hand, so medium actually feels like medium and hard sudoku actually fights back. 8 PUZZLE TYPES - Classic Sudoku - the timeless 9x9 number puzzle - Killer Sudoku - sudoku where sums meet logic, with cages instead of given digits - Jigsaw Sudoku - irregular shapes instead of the usual 3x3 boxes - Windoku and X (Diagonal) Sudoku - extra regions, extra thinking - Mini Sudoku - quick 6x6 grids for a short break - Star Battle - a logic puzzle beyond numbers - Calcudoku-style math puzzles - A new Daily Sudoku challenge every day, plus an archive of every past daily PLAYS OFFLINE. NO ADS. EVER. This is a sudoku game with no ads at all - no banners, no pop-ups, no video interruptions and nothing waiting between puzzles. - Works completely offline, with no internet and no wifi - Offline sudoku made for flights, trains, the subway and dead-zone commutes - No account, no sign-up and no login - Your progress saves automatically, puzzle by puzzle 600 HAND-CRAFTED LEVELS Follow a 600-level sudoku journey from Meadow to Summit that gets harder as you get better, so there is always a next puzzle worth solving. Track your solve times, daily streaks, statistics and achievements along the way. BUILT FOR COMFORTABLE PLAY - Pencil marks and notes, with matching-number highlighting - Unlimited undo, smart hints and forgiving mistakes - Light and dark mode - dark mode sudoku is easy on the eyes at night - Big, readable digits and a calm, distraction-free board - Gentle haptics you can switch off MAKE IT YOURS - Dozens of number tilesets - cats, sushi, planets and more - Soft board themes and cozy backgrounds, or build your own from a photo - Collect friendly mascots like Pip the pencil as you play WHY PLAY SUDOKU EVERY DAY Sudoku is a number puzzle that rewards patience rather than speed. A few minutes of daily sudoku is a quiet kind of brain training - it sharpens logic, concentration and pattern recognition, and it is one of the few games that feels better without a timer breathing down your neck. Play a relaxing puzzle before bed, a quick one on your commute, or work steadily through the levels at your own pace. WHO IT IS FOR Sudoku for adults and beginners alike. If you enjoy logic puzzles, number games, brain teasers or crosswords, this is a sudoku game built to be played every day - and because it runs offline with no ads, it works just as well on a plane as it does on the couch. Unlock every tileset, theme, background, mascot and puzzle mode with a single one-time purchase - or invite two friends and unlock it all for free. No subscriptions, and never pay-to-win. Take a breath, settle in and enjoy a little daily sudoku offline. Welcome to Cozy Numbers.