Numlock Sudoku

Numlock Sudoku is the Sudoku game you've been looking for. Clean, modern, and endlessly replayable with two distinct game modes that cater to every type of player.

Classic Mode: Pure Sudoku, no pressure. Take your time, think it through, and solve at your own pace. Mistakes are highlighted to help you learn, but there's no penalty. Unlimited hints when you need a nudge. Perfect for relaxing or sharpening your skills.

Arcade Mode: Three lives. Three hints. One shot. Every wrong answer costs a heart. Lose all three and it's game over. Race the clock and see how far you can go. Built for players who want a challenge.

Endless Levels: Every difficulty has an infinite number of unique, procedurally generated puzzles. Easy, Medium, Hard, and Expert. Each level is deterministic — come back and replay any puzzle you've faced before.

Smart Features: • Pencil mark notes to track possibilities • Auto-remove notes when you place a number • Highlight matching numbers and related cells • Number pad tracks remaining counts per digit • Haptic feedback for mistakes • Timer and personal best tracking per difficulty • Dark mode support

Customizable Experience: Toggle highlights, auto-notes, haptics, and theme from the settings. Play your way.

Track Your Progress: Stats track your total wins and best times across all difficulties. Level progress is saved independently for Classic and Arcade modes.

Beautifully designed. No ads. No clutter. Just Sudoku.