About the Game
Cyan Heart is a unique “selfie-perspective” horror exploration puzzle adventure.
Guiding a girl who keeps filming herself, you’ll solve puzzles, avoid hazards, and lead her to her goal with the distinctive challenge of having no direct view of the path ahead—checking behind and below her only through the camera’s screen.
A World Dyed Cyan
Life in this world once relied on a peculiar energy called the Magenta Heart—a power that could eternally mimic any physical phenomenon.
Mimic the heat of a flame, and it would become a heat source that burned forever at a constant temperature.
Mimic a heavy blow, and it would turn into a rock drill that never stopped working.
But one day, this energy transformed into a cyan hue.
Known thereafter as “Cyan”, it remained functional yet unstable, and became a dangerous force that turned any tangible object into cyan matter.
Its influence warped both machines and living beings alike.
To the Depths of an Abandoned Facility
Rumors speak of something hidden within a facility that could halt Cyan’s spread.
Alone, the girl sets foot inside.
Due to Cyan’s “eternal” property, the seemingly deserted facility still behaves as if its long-gone occupants remain.
You must guide her through the camera, avoiding—or at times exploiting—Cyan’s mimicked phenomena, to retrieve the mysterious object said to lie at the very end.
The Recording Device "CSZ8x2"
The girl’s multi-functional camera, CSZ8x2, can record video, enable voice communication, and log data.
Pointing the camera at objects allows her to examine them or access machinery.
Hints can be received through voice transmissions from her companions.
Sometimes, looking up or down with the camera will be crucial.
Why is the girl exploring alone?
What is this thing she seeks?
And what is the true nature of Cyan?
You will discover the answers through the lens she holds.
______Witness the record she wished to leave behind.
Screenshots
8 imagesVersion Information
Steam Patch Notes
Official update history
We further investigated and fixed progression-blocking bugs that occurred when quitting the game after clearing puzzle gimmicks and then continuing.
A similar issue could potentially occur in areas other than the one fixed in the previous patch, and we sincerely apologize to anyone who encountered it.
If you stopped playing due to this bug, updating the game will allow you to proceed without any issues.
Once again, we deeply apologize for the inconvenience.
Fixed a bug in Chapter 3 where the door would remain closed if the player quit the game after watching the cutscene and then continued.
We sincerely apologize for any inconvenience caused.
Additionally, Chapter Select will now remain saved even after starting a New Game once all achievements have been unlocked.
[img src="{STEAM_CLAN_IMAGE}/45742143/84c7b520866ded99a6ae61078245db7a57f684fe.png"]
Added Timestamps to the Log List
This is something we strongly encourage you to check out, even if you have already finished the game.
This screen might help you understand why certain conversations felt off.
Adjusted Some Ending Logs
We made modifications to the text to make things more intuitive to understand.
You can also review the updated parts in the log list.
・A bug occurred where players could not leave the screen after interacting. This has been addressed so that players can now exit using either the Escape key or the R key.
Changes
・Front camera interaction is now possible
・Interaction detection has been made more lenient
・Guides now appear when interaction is possible
・The tutorial scene has been improved
Fixed a critical issue that caused lag and crashes during scene transitions.
Please note that this scene transition crash affects some users but not others. If you experience a crash, we would greatly appreciate it if you could share the relevant information.
We sincerely apologize for any inconvenience caused. We appreciate your continued support. Email:[email protected]
We addressed the crash issue occurring in Ver0.1.1, but as no improvement was observed, we have implemented another fix.
Please note that this scene transition crash affects some users but not others. If you experience a crash, we would greatly appreciate it if you could share the relevant information.
We sincerely apologize for any inconvenience caused. We appreciate your continued support. Email:[email protected]
The following elements have been added or modified:
・Fixed a crash occurring during scene transitions
・Added a tutorial explaining that the E key enables interaction
・Fixed an issue where arms were visible when switching to front camera view
・Fixed a bug where switching to front camera view with the F key during dashing failed
・Adjusted the camera distance during dashing
・Modified parts of the puzzle-solving UI
Current Release
Build 25949224
Uploaded Oct 17, 2026
System Requirements
How to Install
Cyan Heart.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.
E3F4F766
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View AllDownload Cyan Heart for PC with a direct link or via torrent. Get the full version of Cyan Heart for free. Cyan Heart is a Adventure released by Shoei Sio.