Gatekeeper makes it safer to download apps from the Internet by giving you control over which apps can be installed on your Mac.
Power Nap keeps your Mac up to date while it sleeps so it's instantly ready to go.AirPlay Mirroring shows your Mac screen on your HDTV with Apple TV.Dictation lets you talk anywhere you can type-no setup or training required.See what games your friends play and track your progress against them.Check out leaderboards and achievements.Log in to the Game Center app to see friends in your gaming network.
Mountain Lion includes over 200 new features to update your Mac into the best computing experience yet. Apple OS X Mountain Lion is the latest release of the world's most advanced desktop operating system.