public void turnPage(int gameId)
        {
            // TURN PAGE ON EVERY PLAYER IN GAME
            Game g = listOfGames.ElementAt(gameId - 1);

            for (int i = 0; i < g.Count; i++)
            {
                ServiceUser      p  = g.Players[i];
                Subscriber       s  = getSubscriberById(p.Id);
                IServiceCallback cb = s.callback;

                cb.OnGameStart(gameId);
                Trace.WriteLine("SERVICE: Calling back to turn page done!");
            }
        }