I opened up the game on my Windows 11 current laptop and 10 old computer.
Viewing post in ESPGALUDA HOUJUU jam comments
Hi, can you try either of these steps before reopening the game for me:
* Removing d3d9.dll in the game directory (back this up in a folder beforehand)
* Going to Graphics Settings, adding the Start Game.exe file as an app and set the graphics setting to High Performance (for Nvidia cards)
A Windows 10 user also couldn't open the game but was able to after doing the first one. You should try both and see how it goes!