using System;
 
public class Test
{
	public class Conf
	{
		public int level { get; set; }
	}
 
	public static class Game
	{
		public static Conf _conf;
		public static Conf conf { 
			get {
				if (_conf == null) _conf =  new Conf(); //Read from file or create
				return _conf;
			} 
			set {
				_conf = value;
				//save conf to file
				Console.WriteLine("Conf saved");
			} 
		}
	}
 
	public static void Main()
	{
 
		Game.conf.level = 5;
        Game.conf.level++;
//        Game.conf = Game.conf;
	}
}

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