They've offered games for Mac for a while (yay!) but they only fairly recently sorted them into their own category. Before, you had to go through, look at games you like, and see if they had the Apple symbol on them. Since I also have a PC (well, since my parents also have a PC they never use in their family room....) this wasn't a huge problem for me but for a lot of other Mac users I can imagine it was something of a nightmare.