I recently downloaded a few Unity games and I cannot play any of them. All that happens when I attempt to run the program is the icon briefly appears on the dock (half a second at most). I am on a Mac, with OS X 10.6.8. If any more information is needed, please feel free to ask.
Make sure its not an exe that you downloaded, the .exe extension is for windows only, you have to download the .app version, or whatever you’re mac can open (extension wise)