The Mac App Store has 2,225 applications available in the store approximately two months post-launch, according to the Distimo research group (http://www.distimo.com). Comparatively, the Apple App Store for iPad had 8,099 applications two months post-launch.
Although on the Mac gaming has been less popular than on Windows, the Mac App Store promises a bright future for Mac gaming. There are already 646 games in this store (29%), and 39% of the most popular applications are games as well.
The proportion of free applications in the Mac App Store is lower than that of, say, the app store for iOS devices. Only 12% of the applications are free.