Oh no, thanks for the heads up! I've tried updating the executable permissions on the macOS version. Could you try re-downloading it and see if that worked?
If that still doesn't work, could you tell us what version of macOS you're on and attach a screenshot of the exact error you're getting?
A lot of macOS games have this problem. I recommend downloading / launching through the Itch.io desktop app as it seems to take care of many of these issues.
