I saw a Mac game today in the TA New Releases and Price Drops page (GL Golf). I hope Mac games will have their own section. I clicked the icon, as there was no indication that it was a Mac game. Or perhaps the page could be sortable to include/exclude iPhone, iPad, or Mac games.
That data is pulled from AppShopper, which is just barely starting to support the Mac App Store. I think Mac games showing up in that listing is unintentional, I talk to the powers that be about filtering it out or breaking it in to two sections.