I figured out exactly how. After downloading the game, right click on the game and select "show package contents", then select the folder "MacOS". Type into terminal "Chmod + x" then drag the file within the MacOS folder into the script and enter.
I figured it out! Right click on the game and select "show package contents", then select the folder "MacOS". Type into terminal "Chmod + x" then drag the file within the MacOS folder into the script and enter.