공식 애플 문서에 보면 you assign each leaderboard a leaderboard ID, also known as a category. 로 나와있다. LeaderboardID 값으로 GKScore를 만들고 .value 값에 점수를 넣고 그냥 쏴주면 되는 듯. -(void)reportScore:(int64_t)score forLeaderboardID:(NSString *)identifier{ GKScore *scoreReporter = [[GKScore alloc] initWithCategory:identifier]; scoreReporter.value = score; [GKScore reportScores:@[scoreReporter] withCompletionHandler:^(NSErr..