Premium, distraction-free Sudoku: no ads, no accounts, no internet. Eleven grid sizes (4×4–25×25), deterministic seeded puzzles, full keyboard/mouse/touch support, and a high-contrast, colorblind-friendly design. Buy once, own it forever.

Sudoku Atlas is Sudoku without the noise. No ads. No pop-ups. No accounts. No internet. Just you and the grid — from a gentle 4×4 up to a monumental 25×25. Buy it once, own it forever, play it offline on your terms.<h2 class="bb_tag" >One purchase. Every puzzle. Zero noise.</h2>Sudoku Atlas is a premium, distraction-free Sudoku app built for people who<br>actually love the puzzle. There are no ads, no in-app purchases, no accounts,<br>and no tracking — the app never touches the network. You pay once and own the<br>whole thing, forever, fully offline.<h2 class="bb_tag" >From 4×4 to 25×25</h2>Most Sudoku apps give you one grid size. Sudoku Atlas gives you eleven, spanning<br>a huge difficulty range:<br><ul class="bb_ul"><li>Warm up on tiny 4×4 and 6×6 boards.<br></li><li>Settle into the classic 9×9.<br></li><li>Push into 12×12 and 16×16 for a serious session.<br></li><li>Take on the sprawling 25×25 when you want to disappear into a puzzle for an<br>hour.</li></ul>Every board is generated deterministically from a seed, so a puzzle always has<br>exactly one solution — and the same puzzle is genuinely the same puzzle, every<br>time.<h2 class="bb_tag" >Built for focus</h2><ul class="bb_ul"><li>Clean, minimalist interface that stays out of your way.<br></li><li>Pencil marks, one-tap undo/redo, and hints when you want them — never forced.<br></li><li>Your progress, settings, and statistics live entirely on your device.<br></li><li>No timers shouting at you. Play fast, or don't.</li></ul><h2 class="bb_tag" >Play it your way</h2><ul class="bb_ul"><li><strong>Mouse, keyboard, or touch</strong> — each one on its own is enough to play the<br>entire game. Full keyboard control (arrow keys, number entry, pencil mode,<br>undo/redo, hints) for desktop purists; complete touch control for 2-in-1s, touch<br>monitors, and Steam Deck.<br></li><li><strong>High-contrast theme</strong> for low-vision play.<br></li><li><strong>Colorblind-friendly by design</strong> — color is never the only signal;<br>shapes, borders, and underlines carry the same information.<br></li><li><strong>Respects your system text size</strong> and ships a full screen-reader label<br>tree.</li></ul><h2 class="bb_tag" >Private by principle</h2>Sudoku Atlas makes zero network requests. There is no analytics, no advertising,<br>and no crash reporting. Nothing you do in the app leaves your device. It's a<br>Sudoku game that treats &quot;we don't collect your data&quot; as a feature, not fine<br>print.<h2 class="bb_tag" >Who it's for</h2>Whether you solve one 9×9 with your morning coffee or lose an evening to a 25×25,<br>Sudoku Atlas is the calm, permanent, respectful Sudoku app you keep coming back<br>to.<br>

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