About Cosmic Sudoku
Cosmic Sudoku is a free, space-themed Sudoku game you play right in your browser — 777 hand-tuned levels that carry you from Earth all the way to the edge of the universe.
It started as a simple idea: take the classic logic puzzle everyone loves and wrap it in something calmer and more beautiful — an animated cosmos, milestone cutscenes as you reach new worlds, and a lo-fi jazz soundtrack to solve to. No clutter, no sign-up walls, no pressure. Just you, the grid, and the quiet hum of space.
Free for everyone
Every part of Cosmic Sudoku is free — all 777 levels, the daily puzzle, streaks, stats, and 10 hints a day. There's no paywall and no account to create; your progress saves right on your device. The game is supported by ads, which keep it free for everyone who wants to play.
If you enjoy it and want to help with hosting and future updates, you can buy me a coffee — it's completely optional and hugely appreciated.
Made by DQ Apps
Cosmic Sudoku is built by DQ Apps, a small independent maker of games and apps meant for everyone to enjoy — simple, friendly, and free to pick up. More projects are on the way.