Unfortunately I can't seem to open the Mac version. I've only ever done Web builds, so I'm not sure what the problem might be. I found some steps online saying to run "chmod +x" on the application, and that changed the error from "The application 'YesterSol Free Pre-Alpha MAC firstTry' can't be opened" to a new error that says "'YesterSol' cannot be opened because it is from an unidentified developer. macOS cannot verify that this app is free from malware"
No worries though - I know publishing for Mac is a big headache