I'm doing my first implementation with Game Center. I'm trying to let players issue GKScore challenges to one another. My game consists of playing a c ...

I have a question about GKScore. There is a method called report(_:withCompletionHandler:). What happens if you lose your Internet connection. Do I ne ...

I have created new leaderboard (My first leaderboard) via following tutorial GameCenter Leaderboard Implementation Tutorial I had no error while ini ...

I want to implement ELO rating system for a game. It means that after ending a game, I have to calculate increase for winner and decrease for looser f ...

I'm trying to implement Game Center into my ios7 game (Xcode 5), but the material in the apple docs and the stuff I've seen online doesn't seem to wor ...

I'm trying to save some GKScores which may have different playerIDs ex: I have 2 GKScore objects, score1 and score2. Does the score gets reported ...

I want to create a leaderboard in Game Center for the best scores submitted today, and I want it reset every day at midnight. It's not hard to just c ...

What do you set the value to be for the scoreReporter to show up as a correct time in game center leader-board. What do you need to covert the seconds ...

I am trying to submit a float of two decimal length to my Game Center leaderboard, however the only format allowed to submit with is int64_t. I am usi ...