Simple math console application - C#

JamesonMath.exe

using System;

namespace JamesonMath
{
    class Program
    {
        static void Main(string[] args)
        {
            //variables
            string userName;
            int age;
            string playerResponse;
            string mathProblem;
            string userValue;
            int answer;
            string keepPlaying;
            bool ageQuestion;
            bool answerCheck;
            int num1;
            int num2;
            int mathAnswer;


            Console.WriteLine("What is your name?");
            userName = Console.ReadLine();
            Console.WriteLine(userName + "! That is a wonderful name!");

            //Begin player age question

            ageQuestion = true;
            while (ageQuestion)
            {
                Console.WriteLine("How old are you, " + userName + "?");
                //string playerAge = Console.ReadLine();

                if (int.TryParse(Console.ReadLine(), out age))
                {
                    Console.WriteLine(age + " years old! You must be very smart.");
                    break;
                }
                else
                {
                    Console.WriteLine("Sorry. I don't understand that answer.");
                }
            }
            #region 
            //Begin asking if player wants to play a game

            bool userAnswer = true;
            while (userAnswer)
            {
                Console.WriteLine("Would you like to do some math problems? Press Y for Yes and N for No.");
                playerResponse = Console.ReadLine();
                if (playerResponse.ToUpper() == "YES" || playerResponse.ToUpper() == "Y")
                {
                    Console.WriteLine("Great! Let's get started.");
                    Console.WriteLine("Complete the following equation");
                    break;
                }
                else if (playerResponse.ToUpper() == "NO" || playerResponse.ToUpper() == "N")
                {
                    Console.WriteLine("Are you sure. Math is fun!");
                }
                else
                {
                    Console.WriteLine("Sorry. I don't understand that answer.");
                }
            }

            //Begin game
            int correctCount = 0;
            bool userPlays = true; //This is a flag that we will use to control the flow of the userPlays loop
            while (userPlays)
            {
                //int correctCount = 0;
                bool questionCycle = true;
                while (questionCycle)
                {
                    Random rnd = new Random();
                    num1 = rnd.Next(10);
                    num2 = rnd.Next(10);
                    mathAnswer = num1 + num2;

                    mathProblem = num1.ToString() + " + " + num2.ToString() + " = ";
                    Console.WriteLine(mathProblem);

                    #endregion
                    //Begin User Input

                    userValue = Console.ReadLine();
                    answer = Convert.ToInt32(userValue);
                    //Careful here--if the user doesn't enter an integer value,
                    //the program throws an unhandled exception. Look back at
                    //your use of TryParse() above. You'll want a similar approach 
                    //here, to avoid the program breaking.



                    //Begin Result
                    if (mathAnswer == answer)
                    {
                        Console.WriteLine("Correct!");
                        correctCount = correctCount + 1;
                        //if (correctCount == 5)
                        if (correctCount % 5 == 0)
                        {
                            break;
                        }
                    }
                    else
                    {
                        Console.WriteLine("Incorrect. The Correct answer is " + mathAnswer);
                    }
                }

                //Begin "Continue playing?" question. Currently this is asked after
                //every question. Ideally, this would be asked only after x number of correct answers

                bool continuePlaying = true;
                while (continuePlaying)
                {
                    Console.WriteLine("You've answered " + correctCount + " questions correctly! Great job. "+
                                      "Would you like to keep playing? Press Y for Yes and N for No.");
                    keepPlaying = Console.ReadLine();
                    {
                        if (keepPlaying.ToUpper() == "YES" || keepPlaying.ToUpper() == "Y")
                        {
                            Console.WriteLine();
                            break;
                        }
                        else if (keepPlaying.ToUpper() == "NO" || keepPlaying.ToUpper() == "N")
                        {
                            Console.WriteLine("Goodbye.");
                            Environment.Exit(0);
                        }
                        else
                        {
                            Console.WriteLine("Sorry. I don't understand that answer.");
                        }
                    }
                }
            }//end While userPlays
            Console.ReadLine();
        }
    }
}

This is my very first c# console application. After watching half of the MVA C# for Absolute Beginner's series (I'm still watching them; I haven't given up) I decided to test my knowledge. This is what I came up with. I'm pretty proud of it. If anyone happens across this code and wants to give me advice (specifically on refractoring) I would love you forever.

Dude, did you give up yet??!