Well, Mac is notorious for having issues with RPG maker games. Basically, it rarely works, especially if the game is compiled via windows, there's no guarantee that it'll function.
Anywho, this might not work at all.
1. Download the WIN version of this game (see first post)
2. Download this compiled, stripped down MAC version I compiled of my modified version:
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3. Extract the WIN version somewhere.
4. Extract the MAC version somewhere.
5. Go into the WIN version and navigate to "main folder(MGA or something)\www" and copy the "img" and the "audio" folders to your MAC version in this subfolder:
"MGA\Game.app\Contents\Resources\app.nw" and overwrite the existing IMG and audio folders.
(Reason: My compiled MAC version is stripped of sound and images for file size reasons. You can simply use the ones from the original WIN version, since the container file is identical)
6. EDIT, additional step: Either use the system.json inside the attached archive or the system.json file you can find inside the ORIGINAL WIN folder and copy it to the mac folder into: "MGA\Game.app\Contents\Resources\app.nw\data" and overwrite the existing system.json file. Otherwise the mac version won't be able to uncompress the audio and image files, etc.
7. (OPTIONAL) Now you should already be able to play the game, BUT it will currently also include my scene&cheat mod. This is purely optional, you don't have to use it and won't notice it, but if you *still* want it gone and the pure vanilla version (which I currently can't compile since I work on the modded version), you can download my 0.94 mod from my previous post a few posts or so ago. Inside, there's a folder that allows you simple, easy uninstallation of my mod to restore pure vanilla conditions. Simply follow the readme instructions but instead of extracting to "main folder(MGA or something)\www" use the MAC folder type at "MGA\Game.app\Contents\Resources\app.nw".
Like I said, I can't guarantee this works, simply because RPG maker MV has flimsy mac support. But this is probably your best shot so long as no official mac version is published.