itch.io

Don't have a mac around to try it, but last time this was a problem on my friends computer I just unziped the file command clicked to open (maybe I had to run as administrator). Some mac users have had better luck when opening this through the itch app. Let me know if you're still having problems and I'll see what I can do. 

If you're on Catalina to get this to run, use Terminal to navigate to the app location and type: 

chmod +x ACrimpInTimeMac.app/Contents/MacOS/A\ Crimp\ In\ Time/

Then ctrl + left click, and select open. You should be able to bypass the notarisation requirement.