If you haven't figured it out, the easiest way on Mac that usually works is moving the game to your applications folder. Alternatively, this link provides the general outline for changing permissions on folders for Mac's. https://support.apple.com/en-ca/guide/mac-help/mchlp1203/mac Lastly, if your Mac OS is version 11 or newer, you might have to run the web version instead through your browser. RPG Maker MV stopped Mac support after version 10 as something with the Mac OS changed drastically, making RPG Maker not run properly on it.