Sudoku Zenkai / 数独全卡
Released Apr 2018
Sudoku Zenkai is a game for everyone, from beginning to advanced players. It brings a new dimension to sudoku - you can solve puzzles with your friends, wherever they are! You can start a new puzzle with a friend or call one over to help when you get stuck.
90% positive · 214 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence
Where to buy
Steam $3.99
Can't confirm — worth a look
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Evaluation
Sudoku Zenkai launched on April 2, 2018 as a feature-complete puzzle game. The developer, ImaginationOverflow, shipped a handful of updates in the years following launch, with the most notable being version 1.4.0.0 on May 21, 2019 (a bug fix and performance update) and version 1.5.0 on September 30, 2022, which migrated the game to a new multiplayer service provider and addressed several reported issues. The 1.5.0 update is the last recorded developer activity specifically for Sudoku Zenkai. Since September 30, 2022, no further updates, announcements, or roadmap posts have been made for this game. The developer's attention has clearly shifted to their other title, Oirbo, which has been the subject of all subsequent news posts. No unreleased DLC is listed, no future content has been announced, and there is no indication of a continued update cadence for Sudoku Zenkai. The game shipped as a finished product and its post-launch updates were maintenance-focused. It can be considered content-complete as of the 1.5.0 update on September 30, 2022.
Evidence
Sudoku Zenkai updated to version 1.5.0 with a new multiplayer service provider and bug fixes. This is the last recorded update for the game.
Most recent developer news post is exclusively about Oirbo (a separate game), confirming that ImaginationOverflow's active development efforts are focused elsewhere, not on Sudoku Zenkai.
Media
Details
Developer
Publisher
ImaginationOverflow
Achievements
57
Platform
Windows, macOS, Linux
Controller
—
Steam Deck
Not rated
Players
Single-player · Multiplayer · Co-op
About this game
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!
Features
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!
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.
- 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!
- Turn on Pencil mode to make notes as if you were on paper. Each time you fill in a cell, notes are automatically updated!
- Duplicate Highlighting to avoid repeating numbers in a row, column and square .
- 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!
- Achievements and Leaderboards, because unlocking and comparing times is fun!
- Steam Cloud support.
Are these done yet?
Last evaluated Jun 27, 2026
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