That's was fun!
For people cannot play on macOS, click to show folder of .app, go into macOS, then `chmod 755 Samurai\ Sam` then try to open the app again. Seems to be common issue.
I can't seem to replicate this issue. Then again... I have not updated the is on my 2016 MacBook pro since... Well... 2016. So it may be that newer versions have that issue. Once again, thank you very much for your comment. If you don't mind, I'd like to add that point to the installation instructions.