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If you go to Jayisgames.com, you will find the game's page has downloadable Mac version listed.  I couldn't get it to open on my Mac OS Mojave version 10.14, but maybe you can on your Mac. IF NOT, just click the large yellow PLAY bar seen the Jayisgames page, allow Flash plugin to operate if it asks you, and you're off! I am playing it directly from the website that way right at this moment. Hope this helps you...