Ahhh, finally got it running (highlighted the two commands which led to macOs finally invoking your game, at least from CLI):
You seem to have two issues:
- The packaged binary in the MacOS directory inside the Mac.app (should be named like the game's name) is not executable.
- Due to your way of ad-hoc self-signing the binary, the application directly gets quarantined by GateKeeper.
Not sure how you manage those topics from within your Unity Development environment, but it might be worthwhile looking into going forward. The first issue probably is only a setting, but the second one might be trickier.
Now, let's see if I can finally play your tiny gem ;).
