Hello! I'm very sorry you're having trouble. When you click start, does the narration not appear while it fades to black? Are you just stuck on the main menu?
I just downloaded it to make sure itch didn't corrupt anything, and I can play it just fine. What OS are you using? I use windows so I'm unable to test this on Mac or Linux. Did you make sure it is completely downloaded and all the files are there? If it's working, the icon of the game should be my protagonist Manson or at least the default Ren'py logo.