I dont know how to find any of that out. I am on the itch dowlaoder/browser thingy. i hit download. It downloads. it doesnt launch
It works fine for me on the client. (you do need to click Start). The game will launch in your default web browser. If it still does not work, you can try just playing in your browser directly instead of via the client (https://flori9.itch.io/the-final-earth-2).
just use CoolMathGames to play it. the link to The Final Earth 2 is right there.