I'm new to gaming. and I'm a little confused. Plants vs. Zombies runs on Mac, but I can't find it anywhere in the new App Store on my Mac, yet it's right there in the top games on my iPhone. From what I can tell, the App Store is different on the Mac? Very disappointing. When the little App Store icon magically appeared on my dock, I expected to be able to get the same games from the real App Store... What's the real story?