Nah, we wouldn't destroy your game :)
Have you tried with https://itch.io/app ?
macOS is especially paranoid about apps you download from the internet (which is why it seems itch.io is "breaking" them - but it's the same file!). That's because it'll only trust apps that have been code signed: https://developer.apple.com/li...
The itch.io app works around that & let users play your game anyway!