About the Game
Sudoku Mansion is a story-driven puzzle adventure where you explore a mysterious mansion and solve increasingly challenging Sudoku puzzles.
From the Puzzle Creator Nurator
Sudoku Mansion is created by Nurator, a puzzle setter known for his Sudoku variants.
Nurator's puzzles have been featured multiple times on Cracking the Cryptic, one of the world's best-known Sudoku and logic puzzle channels. Check out the Youtube Link on the right side for an example.
If you've encountered Nurator's puzzles before, you'll find that same love of unusual logic and elegant mechanics throughout the mansion.
Enter Sudoku Mansion
The invitation arrives without warning.
No name, no seal.
Only rushed references to missing servants, unstable rooms and a strange invention.
Two sentences have been underlined twice:
"I have found a way to reach beyond the grid. I no longer know whether that is our salvation or our ruin."
Step inside a mysterious mansion where every room is a handcrafted Sudoku variant. Uncover forgotten inventions as you unravel a mystery hidden deep inside the mansion.
Every Room Teaches Something New
Sudoku Mansion is built around one simple idea:
Every room introduces exactly one new concept.
What begins with familiar Sudoku principles gradually evolves into increasingly sophisticated puzzles. New mechanics are introduced one at a time, allowing every discovery to feel earned while constantly expanding the possibilities.
Every puzzle has been handcrafted. There are no randomly generated levels.
Built for Comfortable Play
Logic should be the challenge, not the interface.
Sudoku Mansion includes a variety of accessibility options to help you focus on solving puzzles your way. Adjust text sizes for comfortable reading, choose alternative color themes, enable colorblind-friendly visuals and customize the appearance of puzzle elements to suit your preferences.
The game is fully playable with only a mouse or only a keyboard and you can freely rebind all hotkeys in the game.
Whether you're settling in for a quick puzzle or an evening of exploration, the mansion is designed to be comfortable to play in.

Knowledge Changes the Mansion
As you explore, you'll unlock powerful puzzle classes that completely change how you interpret familiar rooms.
A puzzle once solved as a German Whisperer may later reveal an entirely different solution as a Region Sum Ambassador. The layout remains unchanged. But the rules and the logic transform completely.
And those are only two of the disciplines waiting to be discovered.
Each new class unlocks another perspective, rewarding players who revisit earlier rooms with fresh eyes.
Secrets Hide Behind Every Door
The mansion rewards curiosity.
Closed Vaults.
Traps you better be very careful around.
Some puzzles exist only for those willing to question what they've already learned.
The greatest mysteries are never placed on the main path.
A Mystery Beyond the Grid
The mansions servants have vanished.
Piece together what actually happened as you uncover the truth behind Sudoku Mansion.

Features
Over 50 handcrafted logic puzzles
Explore a mysterious interconnected mansion
Unlock multiple puzzle classes that transform familiar challenges into entirely new experiences
Discover secret rooms and hidden vaults
Solve unforgettable boss encounters that test your mastery
Atmospheric soundtrack
The invitation is waiting.
Screenshots
5 imagesVersion Information
Steam Patch Notes
Official update history
- Reworded final puzzle rules
- Reworded Fractured Constellations rules
- Fixed library fog
Bugfix
- Fix display preferences not persisting
- Added more Actions (Undo, Check Conflicts, Check Correct Digits, Restart) to default Steamdeck Template on back buttons
- Controller glyphs now show as soon as a controller is connected
- Help items are only shown when applicable to the current hardware
- The Controls options screen reacts to the current hardware
- Added support for external XBox controller on Steamdeck
- Room pictograms, popup animations and ambient animation are now remembered per device
- Reduced save and export file size
Content
- Clarified Hitpoint Arrow rules
- Clarified Region Sum Line rules
- Added note to Threefold Vault regarding the Solution Checker
- Added colorblind rule clarification to chapel boss text
- Fixed some typos
Bugfix
- Fix Controller after save import
- Fix Conflict Checker now removing pencilmarks higher than the grid size
- Guiding marker points to the next relevant overlap you should explore
- Added option to hide tutorial popups
Content
- Reworded more rules
- Made room spelling more consistent
- Fixed more typos
Bugfix
- Replay newly added popups for old saves
- Fix inconsistent longpress behavior
- Fix some preferences not staying on New Game
- Fix Popup triggers only firing in their room in all cases
- Added hotkeys and Steam Input Actions for all useful puzzle controls
- Undo History is stored in save
Content
- Added Example Puzzle Images for hard to understand rules
- Reworded rules to be clearer
Bugfix
- Suppress Alt for Default Events
- Fix Undo undoing progress in other rooms in special cases
- Proper Controller support
- Reduced battery consumption
- Controls screen and in-game prompts now show controller button glyphs when active
- Display settings are now stored per device
- Shift+Ctrl for color mode
- Long press for selecting all digits/pencilmarks of the same time in room mode
- Allow a small dead zone around cell edges to not select them by holding the mouse
- Rule hint for current boss unlock added to rule hints
- Mark digits as conflicting when higher than grid size (e.g. 9 in an 8x8 grid)
- Add option to highlight region/row/column
- Reworded some hints
- Added option to show solving times
- Added option to customize color muting over fog
- Split animation options into "Popup animations" and "Ambient animation" toggles
- Seperated objectives and rules into two tabs on small devices
- Made margins smaller in left column
- Allow adding line markings on mansion overview
Content
- Made adressing the main character gender-neutral
- Reworded Forbidden Planetarium rules
- Fixed some typos
- Added help item for overlapping lines
Bugfix
- Fix deleting pencilmarks in overlaps with the backspace key
- Ctrl+A adds a pencilmark in letter mode
- Improved save backup recovery
- Fix removing conflicting clues in overlaps
- Region lines are drawn above puzzle overlaps for better visibility
- Fix rare crashes on startup
- Undo only undoes digits and not options or notes
- Fix counting crosses unlock message
- Added Rule hints for basic knowledge for new players
Content
- Renamed all boss levels with proper names
- Renamed Astrolab to Planetarium
Bugfix
- Fixed Dining Room boss
- Proper Small Device Mode
- Allow Steam Deck stick and buttons
- Allow Steam Deck rebinding
- Revamped missing hints system to guide players better
- Added note taking as an optional tab
- Change color of overlap borders to light gold to not clash with blueish lines
- Automatic Counting Cross counting
- Allow option to place corner digits in fixed positions
- Reordered Display and Accesibility tab
- Scroll wheel cycle digit modes on hover
- Double click now works on pencil marks
- Option to change colors between digits, center marks and corner marks
- Option to only show relevant rules in the left column (on by default)
- Start back in last room on continuing
- Use Antiknight in conflicts for approriate puzzles
- Reload the last mansion position after room exit
Content
- Scramble digits in quads to not suggest numerical ordering
- Fix Kropki dot in Upper Foyer
- Clarified some late game rule wording
- Fixed chessboard
Bugfix
- Resetting in class specific rooms unveils fogged cells now correctly
- Enter works as double click for selecting digits
- Fix pencilmarks overlap in all cases
- Fix pencilmarks on cage edge cases
- Reverse colors on reversed keypad
- Increase Credits speed
- Improved Line Tool (XOs, better deleting animation)
- Add toggle to capture the cursor inside the game in window mode
- Fixed typos
- Support 16:10 and 3:4 aspect ratios (autodetect)
Content
- Fix astrolab/vault modular line
- Fix arrows in stairways
- Improve armory signposting
- Move popup in driveway to R9C9
- Move lore tip to an earlier point
- Clarified library boss rules with an example
- Clarified armory boss rules with a better example
Bugfix
- Fix victory laurel wreath clashing with clues
- Fix colorblind class pill for fractional window scalings
- Fix big keypad for fractional window scalings
- Fix more cage conflict checking
- Fix color picker on linux
Improvements
- Increase size of digits in big keypad mode
- Improve 1/A switching button
- Slightly improved Cage rules text
- Delete with shift/ctrl to delete appropriate pencilmarks
- Allow Alt+Letters to put them in
- Synchronize pencilmarks in room overlaps
- Remove conflicting pencilmark removal popup
- Allow checking for mistakes and only removing wrong digits on confirmation
- Changed the check symbol accordingly
- Improve missing clues warning graphics
- Improve checkerboard against fog
- Change boss symbol to golden victory laurel wreath when boss is solved
- Thank more people in the Credits
Bugfix
- Reversing the keypad also reverses letters
- Only use visible cages in conflict checking
- Puzzle has always focus, so Tab and YXCVB always work
- Windows key does nothing anymore
- Draw lines above clues
- Center digits vertically in each cell
Current Release
Build 24908517
Uploaded Aug 24, 2026
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System Requirements
How to Install
Sudoku Mansion.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
Needed when extracting (WinRAR / 7-Zip) — not a site login.
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View AllDownload Sudoku Mansion for PC with a direct link or via torrent. Get the full version of Sudoku Mansion for free. Sudoku Mansion is a Casual released by Vault Door Studios.