I just tried installing it with the itch.io client, and also downloading the UnityPlayer.dll and putting that in the same folder but it still doesn't work. I'd suggest maybe asking for help in the discord.
It gives this error:
Data folder not found
Details:
Application folder:
D:/Progams/itch.io/ghost-runner
There should be 'minijam96_Data'
folder next to the executable