Yeah, Linux users amount for even less than Mac users, although the both of them amount for 60% of tech support-related issues according to what we've read--that's not an issue with the players themselves, but rather how Apple isn't very developer and player-friendly (and there is only so much the peeps who make the Ren'py engine can do to fix issues related to Mac OSX update.)
If you run into any issue with our game builds on Mac, don't hesitate to tell us --we'll do our best to fix it!