Series-Game-Fixed-For-Newbie

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace reminder
{
    class Program
    {
        public static void SeriesN(string series, int seriesNum, int answer)
        {
            Console.ForegroundColor = ConsoleColor.Blue;
            Console.WriteLine("\nlevel {0}:\n", seriesNum);
            Console.WriteLine(series + "\n");
            Console.Write("what is the next number?  ");
            int e = int.Parse(Console.ReadLine()); //בקשת המשך

            if (e == answer)
            {
                Console.ForegroundColor = ConsoleColor.Magenta;//ניצחון
                Console.WriteLine("Good Job.\n");
            }
            else //e=!answer
            {
                Console.ForegroundColor = ConsoleColor.White;  //הפסד
                Console.WriteLine("TRY YOUR LUCK IN THE NEXT LEVEL. THE CORRECT ANSWER IS {0} , {1}\n", series, answer);
            }
            Console.ResetColor();  //איפוס צבע
            System.Threading.Thread.Sleep(500);
            Console.WriteLine("\n*******************************************\n");
            Console.ForegroundColor = ConsoleColor.Blue;
        }
        static void Main(string[] args)
        {
            Console.ForegroundColor = ConsoleColor.Green; //צבע פתיחה וגישה
            Console.WriteLine("welcome serias games developed by Omer.");
            Console.ForegroundColor = ConsoleColor.Cyan;  //הוראות צבע
            Console.WriteLine("\nfor instractions press 1, don't want instractions press 0.");

            int instractions = int.Parse(Console.ReadLine());  //הוראות
            if (instractions == 1)
            {
                Console.WriteLine("hi, Welcome to serias games.");
                Console.WriteLine("you will recive some numbers, please try to guess the next one.");
                Console.WriteLine("HAVE FUN");
                Console.WriteLine("Just wait few seconds until the game begins.");
            }
            System.Threading.Thread.Sleep(10000);
            Console.Clear();

            System.Threading.Thread.Sleep(1000);
            SeriesN("1 , 2 , 3 , 4", 1, 5);
            SeriesN("2 , 4 , 6 , 8", 2, 10);
            SeriesN("4 , 8 , 16 , 32", 3, 64);
            SeriesN("1 , 3 , 2 , 4 , 3", 4, 5);
            SeriesN("10 , 100 , 1000 , 10000 , 100000", 5, 1000000);
            SeriesN("11 , 9 , 7 , 5 , 3", 6, 1);
            SeriesN("11 , 22 , 33 , 44 , 55", 7, 66);
            SeriesN("15 , 30 , 45 , 60 , 75", 8, 90);
        }
    }
}