Full Apple iOS GameKit Plugin for Corona SDK
This Corona GameKit library provides access to all of Apple’s iOS 7 Game Center features except voice chat.
Games on iOS can take advantage of Game Center, Apple’s social gaming network. Game Center enables your users to track their best scores on a leaderboard, compare their achievements, invite friends to play a game, and start a multiplayer game through auto-matching.
Corona SDK Apple iOS GameKit Plugin forum.
Corona SDK for OS X
Activate the Apple iOS GameKit Plugin on Corona Plugin Directory
Apple Developer Program Membership
Setup Game Center on Apple iTunes Connect
Apple iOS device running iOS 7 or greater
GKTester Lua app source code using all the iOS GameKit Plugin features.