One of my first scripts in C# - Number Guessing Game - Throwback script #2

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Number Guessing Game
{
    class program
    {
        static void Main(string[] args)
        {
            Random grn = new Random(); //grn = generated random number
            int fn = grn.Next(-100, 100); //fn = final number
            bool endgame = false;
            do
            {
                Console.WriteLine("Guess the randomly generated number between -100 and +100");
                string ga = Console.ReadLine(); //ga = given answer
                int pa = int.Parse(ga); //pa = processed answer
                if (pa > fn)
                {
                    Console.WriteLine("Lower!!!");
                    }
                else if (pa < fn)
                {
                    Console.WriteLine("Higher!!!");
                    }
                else if (pa == fn)
                {
                    Console.WriteLine("YOU GUESSED CORRECTLY!!! YOU WON!!! :)");
                    endgame = true;
                    }
                Console.WriteLine();
            } while endgame == false;
            Console.WriteLine("Thanks for playing, bye!!! :D");
            Console.WriteLine("Press any key to end the game now...");
            Console.ReadKey(true);