Game Center is an online multiplayer social gaming platform that was created by Apple. It was available on iOS devices at first, but it was later integrated in Mac OS X as well, with the introduction of Mountain Lion (Mac OS X 10.8).
Using Game Center on Mac is pretty easy. First you need to launch the Game Center application. You won’t find it in the Dock, but we will show you how to access it easily.
If you would like to view the game leaderboards for a certain game, you can do that by visiting the “Games” tab.
Practically every member of Game Center can challenge you, whether it’s your friend or a stranger.
Achievements are awarded for completing certain milestones in a game.