# Sudoku Zenkai — A new dimension to Sudoku. > Cooperative Sudoku game with multiple themes, difficulties, and a puzzle generator. (iPhone/iPad app by Diogo Cardoso.) - Source: https://appshunter.io/ios/app/sudoku-zenkai/id1350745084 (this page in markdown: same URL + `.md`) - Developer: [Diogo Cardoso](https://appshunter.io/developer/1294879672) - Category: Games, Board, Puzzle - Price: Free with in-app purchases - Rating: 4.10/5 from 13 App Store ratings · 4 written reviews indexed - Age rating: 4+ - Requires: iOS 10.0 · 174 MB - Languages: American English - Released: 2018-03-06 - Data updated: 2026-06-10 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/sudoku-zenkai/id1350745084/reviews.md ## What is Sudoku Zenkai? Sudoku Zenkai is a game for beginners and advanced Sudoku players. It lets you play cooperatively with your friends! You can start a new puzzle with a friend or simply ask one to help you on that tricky one, two heads are always better than one (usually). Train your brain, logic and perception skills with Sudoku Zenkai puzzles in six different difficulties so that you can start on trainee levels to exercise your logical thinking and memory, or just jump to the insane levels to give your mind a real workout. Sudoku Zenkai also features different themes allowing to play on which style you find most comfortable. Tired of numbers? With Sudoku Zenkai emblems you can spice up any Sudoku puzzle with letters, greek, kanji and more. This game has its own high-quality puzzle generator (no internet required), everyday you can enjoy fresh puzzles and compete with friends on who has the best time. With Sudoku Zenkai, you won’t be looking for a paper puzzle ever again! Download Sudoku Zenkai and find more features that will help you become a Sudoku master! Features => SIX DIFFICULTY LEVELS From Trainee to Zenkai, ensuring that you will be able to find a puzzle that matches your skill level. => CO-OP MODE Invite a friend to help you out solving the puzzle! => HIGH.QUALITY PUZZLE GENERATOR No matter how much you play there will be always fresh and unique puzzles available. => THEMES A Theme for all, pick the theme that best suits your style. =>EMBLEMS Tired of numbers? Try some of our emblems that range from letters, greek to kanji! => PENCIL MODE Turn on Pencil mode to make notes as if you were on paper. Each time you fill in a cell, notes are automatically updated! => HIGHLIGHTING Duplicate Highlighting to avoid repeating numbers in a row, column and square. => HINTS Hints, that help you get past that hurdle. => LAST VALID BOARD Made a mistake and don't know where? With last valid board you can get back into the past where everything was good! => ACHIVEMENTS AND LEADEBOARDS Because unlocking and comparing times is fun! ## Key features - Co-op mode with friends - Six difficulty levels - High-quality puzzle generator - Customizable themes and emblems - Pencil mode for notes - Duplicate highlighting - Hints and last valid board ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Sudoku Super Zenkai | $1.99 | one-time | ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/sudoku-zenkai/id1350745084/reviews.md ### 5/5 — Splendid *2023-05-21* Good game w great multiplayer ### 2/5 — Weird multiplayer session *2023-04-29* I get the concept that you can VC, but some of us don’t wanna VC, or we’re together in real life. Also, the puzzles we were given were completely different. So while we can play on the “same board”, the puzzles on each one just doesn’t match, as my friend had multiple twos in one box, and my screen was completely fine. Please fix that, it’s impossible to play with friends when we want to. ### 2/5 — Co Op suddenly isn’t working? *2022-12-15* Loved this the first time I played but now the co -op mode isn’t working! ### 1/5 — Pasting data from notes *2020-10-16, version 1.4.0* App is pasting data from clipboard for no reason upon launch ## Frequently asked questions about Sudoku Zenkai ### Does Sudoku Zenkai have ads? Yes, Sudoku Zenkai contains advertisements. These ads help support the development and free availability of the game. ### How many difficulty levels does Sudoku Zenkai offer? Sudoku Zenkai offers six distinct difficulty levels, ranging from 'Trainee' to 'Zenkai', ensuring a challenge for all skill levels. ### Can I play Sudoku Zenkai offline? Yes, Sudoku Zenkai features its own high-quality puzzle generator, meaning you can enjoy fresh puzzles without an internet connection. ### What is the co-op mode in Sudoku Zenkai? The co-op mode allows you to invite a friend to help you solve a Sudoku puzzle, making tricky challenges more manageable. ### What age rating does Sudoku Zenkai have? Sudoku Zenkai is rated for ages 4 and up, making it suitable for a wide range of players. ### How often is Sudoku Zenkai updated? The latest version of Sudoku Zenkai is 1.5.3, and it was last updated on October 27, 2022. Updates typically bring new features and improvements. ### What kind of themes are available in Sudoku Zenkai? Sudoku Zenkai offers various themes beyond numbers, including options with letters, Greek symbols, and Kanji, allowing for a personalized experience. ### What are the in-app purchases in Sudoku Zenkai? While the specific details of in-app purchases are not provided, they typically offer cosmetic items or convenience features to enhance the gameplay experience. ## Version history (last 5 releases) ### 1.5.3 — 2022-10-27 Bug fix ### 1.5.0 — 2022-10-15 Updated co-op system ### 1.4.0 — 2019-05-21 Improved puzzle generator Fixed crash reports ### 1.1.1 — 2019-04-04 Anniversary update! New theme, Russian language support! Bug fixes and a lot of performance enhancements! ### 1.1.0 — 2018-08-14 [New] Online co-op matchmaking [New] Czech language support [New] Automatic language detection [New] Speedrun features [Improvement] Added eraser key binding on the Steam version [Improvement] Some languages translations [Fixed] Generated puzzles loop (they no longer repeat themselves) [Fixed] Issue that prevented annotations to be removed automatically in a co-op game [Fixed] Misc annotation sync issues [Fixed] Rate issue on iOS [Fixed] Average time display on the stats ## Apps similar to Sudoku Zenkai | App | Rating | Price | Category | | --- | --- | --- | --- | | [Sudoku Extreme: Classic Number](https://appshunter.io/ios/app/sudoku-extreme-classic-number/id1451683705) | 4.5 (781) | Free | Games | | [Sudoku Multiplayer Number Game](https://appshunter.io/ios/app/sudoku-multiplayer-number-game/id1490099171) | — | $4.99 | Games | | [Chessvis](https://appshunter.io/ios/app/chessvis/id1229226444) | 4.4 (21) | Free | Games | | [Sudoku Friends - Sudoku](https://appshunter.io/ios/app/sudoku-friends-sudoku/id1605258903) | 4.3 (32) | Free | Games | | [Cthulhu Realms](https://appshunter.io/ios/app/cthulhu-realms/id1035256452) | 3.2 (62) | Free | Games | | [Sudoku Multiplayer Challenge](https://appshunter.io/ios/app/sudoku-multiplayer-challenge/id1454791617) | 4.3 (111) | Free | Games | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*