Sudoku Unlimited +

Sudoku Unlimited + is built for one thing: a clean, trustworthy game of Sudoku you can play anywhere, with puzzles that never repeat.

GENEROUS FREE PLAY
Unlimited 4x4 Beginner games, plus 50 Easy, 10 Medium, 5 Hard, and 3 Extreme puzzles free, numbered so you always know where you are and free to replay. Plus a free daily puzzle at every level, every day.

GO UNLIMITED, ONCE
One optional purchase unlocks unlimited puzzles at every level, generated on demand and verified to have exactly one included. No subscription. No ads.

DIFFICULTY YOU CAN TRUST
Every puzzle is graded by the solving techniques it actually requires, so Easy feels easy and Extreme earns its name.

FIVE LEVELS, FROM FIRST-TIMER TO EXPERT
A simplified 4x4 Beginner mode for newcomers, then Easy, Medium, Hard, and Extreme. All five levels are playable for free.

READY THE MOMENT YOU OPEN IT
Ships with 450+ hand-verified puzzles built in, so there is no wait and no internet required.

A DAILY PUZZLE AND STREAKS
A fresh daily puzzle at your level, with optional reminders. Build a streak and keep it alive.

STATS THAT MEAN SOMETHING
Per-level streaks, your fastest and average times, perfect runs, and a full history of completed boards.

THOUGHTFUL PLAY
Pencil-mark notes, undo and redo, mistake highlighting, a pause button, and a hint system. Light and dark themes with selectable color palettes.

FULLY OFFLINE, PRIVATE BY DESIGN
No account. No sign-in. No data collection. Everything stays on your device. Play in airplane mode for hours.