Are you on Windows or Linux? Did you get an error message when you tried launching? Did anything pop-up from the program or from your computer itself?
Are you launching through Itch.io’s launcher itself or through the zipped folder? If it’s the former, you might have to go into your files where Itch stores the game and launch the .exe (Windows) or the .sh (Linux) manually.
If you can access the “log.txt” file within the game’s folder and paste the information in a reply, that would be possibly helpful!
Afterwards, you can try deleting the zip file and re-downloading it from the page.
So sorry about it not launching!