i don't play this game, and i don't think i will, but i noticed you had a problem with exporting to mac?
i'm a fellow Gamedev and the solution i found that works, is this:
- go to the mac
- open the terminal
- open the directory that the .app file is in
- and type in "sudo chmod -R 755 [filename].app" (make sure the R is capital)
then you should be able to run it
a few notes:
once you've gotten the game running you're able to zip it, and other mac players should be able to play it aswell, that means you need a mac to be able to export the game
i've discovered a way to do it without mac, but it's difficult, and if you have a mac, i suggest you use that