oxxdoku
Queens Logic Puzzle
Only for iPhone
Free
iPhone
"Calm the mind, spark the brain. Just 10 minutes a day, give your mind a workout. Let oxxdoku keep you company on a cozy afternoon."
If you enjoy the reasoning of Sudoku and the process of elimination in Minesweeper, oxxdoku sits right between them.
One O in every row, every column, and every color region. Mark the rest with X. Two O's can never touch — not even at a corner. Double-tap a square to place one.
Every board is solvable by pure deduction. No level will ever ask you to guess: boards that cannot be reached step by step are discarded before they ever reach you.
• 100 campaign levels, on boards up to 10×10
• A fresh daily challenge and a daily check-in, both from level 20
• Undo, hints, three lives, gentle haptics
• Plays offline, anywhere
• About 38 MB — kind to an older phone
About the ads: no account, no start-up popup, no consent form to dismiss. Watching one for an undo or a hint is always your choice. From level 20 a full-screen ad can appear after you clear a level; close it right away if you like — the next board is already waiting.
One row · one column · one color · one O.
Privacy Policy: https://huashan.studio/oxxdoku/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Every level past 30 has been rebuilt: more evenly sized colour regions, and a real step up in difficulty, so there is more for you to work out. A few small fixes as well.
The developer, 一鸥 张, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 一鸥 张
- Size
- 39.5 MB
- Category
- Casual
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Advertising
- Copyright
- © 2026 Huashan Studio