Play Neon Sudoku, a free 9×9 logic puzzle with Easy, Medium and Hard difficulties. Place digits from 1–9 using keyboard or touch, use limited hints and avoid mistakes to complete the grid.
Fill each row, column, and 3×3 box with digits 1–9, without repeats. Click or tap a cell, then use number keys or on-screen buttons; use arrow keys to move, Backspace/Delete to erase. You have limited hints and mistakes.
Neon Sudoku was submitted to SlowDen by 7x.games. SlowDen did not make this game - it is published here from the developer's own submission, added on 2026-10-30. It runs in the browser with no download, no install and no sign-up.