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【Note】What should I do if “DevilConnection” isn't working properly?

We sincerely appreciate your continued patronage of "DevilConnection".
We have received multiple reports of issues such as “the game not launching” or “launching but freezing before the title screen appears.”
Before purchasing, we kindly ask that you verify the following points as much as possible.
Please note that our development team, including debugging efforts, has tested the game extensively. However, we have been unable to reproduce the issues where the game fails to launch or does not progress past the title screen.
We will investigate these issues to the best of our ability, but please understand that there are limitations inherent to being an independent developer.

[h2]If the software does not start...[/h2]
[h3]First, please confirm[/h3]

If you encounter the following error, please verify that the Visual C++ 2015-2022 Redistributable is installed.
Error: The specified module could not be found.
{DevilConnection installation directory}\\resources\\app.asar.unpacked\\node_modules\\steamw...\\steamworksjs.win32-x64-msvc.node


Additionally, multiple reports indicate that on Windows systems, the application launches but then freezes with “Loading tyranoscript” displayed in the title bar. In this case, please try the following steps:
  1. Press [Windows] + [R] on your keyboard to open the Run dialog box
  2. Type “dxdiag” to open the DirectX Diagnostic Tool (select ‘No’ for all dialogs starting with “The last time this program was used...”)
  3. Check the “DirectX Version” in the “System Information” section (the number part)
  4. Right-click “Devil Connection” in your Steam library and select “Properties”.
  5. Enter “--use-angle=d3d{the number you confirmed in step 3}” in the “Launch Options” field (For DirectX 12, use “--use-angle=d3d12”).
  6. Restart the game.

*** As an alternative to “--use-angle=d3d12”, we would appreciate it if you could also try “--use-angle=d3d11on12”. ***

[h3]If it still won't start...[/h3]
We kindly recommend that you first verify the software's functionality using the trial version.
Once you have confirmed it works with the trial version, please proceed with your purchase.

When reporting an issue, please use the Bug Report Board and include the following information in your report.
  • Details of the phenomenon
  • OS
  • CPU
  • Graphic board
  • As much information as possible about your PC (please be careful not to include any personal information)

We would appreciate it if you could also read “Before reporting bug”.

We would also appreciate it if you would consider purchasing it on DLsite (we plan to release a separate trial version there as well, so you can test its compatibility).
https://www.dlsite.com/home/work/=/product_id/RJ01496198.html
If you have already purchased the game on Steam, you can request a refund within 2 hours.

[h2]If you were able to play it before but suddenly can't play it...[/h2]
In some cases, the game may become unplayable due to issues like PC freezes, even if it previously launched successfully.
In such instances, it is highly likely that your save data has become corrupted.
We apologize for the inconvenience, but please follow the steps below to reset your save data and attempt launching the game again.
(Please note that restoring corrupted save data is generally not possible. We appreciate your understanding.)

1. Select “DevilConnection” from your Steam library, then choose [Manage] -> [Browse Local Files]


2. Open the “_storage” folder and delete all files except “steam_autocloud.vdf”.

Patch Update(2025/11/02)

  • Fixed an issue where only some characters were displayed in Collection Mode when using the “Return to First Loop (はじめのループに戻る)” feature.
  • Fixed an issue where the player's name might not display correctly in the epilogue.
  • Fixed an issue where the secret ending list could be viewed in its initial state in the “Ending” in Collection Mode.
  • Fixed an issue where sound effects did not stop when returning to the title screen from certain scenes.
  • Fixed an issue where certain items on the summoning screen would not display after performing specific steps.
  • Other minor adjustments to direction and text


If you encounter any issues, please report them on the Bug Report Board.

Patch Update (2025/11/01-2)

  • Fixed an issue where the scenario would progress incorrectly after selecting a specific option. (If it recurs, please restart from a save file made some time prior.)
  • Fixed an issue where viewing scenarios from the “Bonus” section in Collection Mode caused names to be overwritten.
  • Fixed an issue where the game would freeze when opening the options from the menu screen in specific scenes and adjusting the BGM volume.
  • Added words that cannot be used in player names.
  • Other minor adjustments to the direction


If you encounter any issues, please report them on the Bug Report Board.

Patch Update

Both the full version and trial version have been updated.
  • 【Specification Change】Stricter conditions for reaching specific routes: Based on previous feedback, we have adjusted the conditions to make reaching certain routes more difficult.
  • Fixed an issue where certain endings could not be unlocked under specific conditions.
  • Fixed an issue where the conditions for completing the character were not being met correctly.
  • Fixed a bug where text containing the player's name would become garbled under specific conditions.
  • Other minor adjustments and typo corrections


If you encounter any issues, please report them on the Bug Report Board.

Patch Update

Both the full version and trial version have been updated.
  • Fixed a bug that caused the game to become unplayable when performing an evil eye search in specific scenes.
  • Fixed an issue where certain images remained visible after being deleted.


If you encounter any issues, please report them on the Bug Report Board.