Would love to try this game, but the demo seems broken. The only option on the main menu that seems to work is "Exit." Running Win10.
Just checked the demo and it's working on my machine (Win10). Can you provide any additional details?
I did some trial and error unzipping it a few times and found the issue. My anti-virus software (Norton) was for some reason quarantining "assembly-csharp-firstpass.dll" and after I went through and restored it, the game is now working. Sorry about that!