Guess My Number

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


namespace NumberGuesser
{
    class Program
    {
        static void Main(string[] args)
        {
            String[] lessthan = { "<", "less", "under", "less than", "less then", "small", "smaller", "lower", "low", "go lower", "down" };
            String[] morethan = { ">", "more", "over", "more than", "more then", "big", "bigger", "higher", "high", "go higher", "up" };
            String[] equalthan = { "=", "==", "yes", "equal", "exactly", "correct", "right", "perfect", "great", "excellent", "indeed", "equal to" };
            String[] affirmative = { "yes", "y", "ye", "yea", "sure", "ok", "okay", "why not", "affirmative", "alright", "I guess", "please" };
            String[] negative = { "no", "nah", "nope", "naw", "argh", "negative" };



            Console.WriteLine("Welcome, {0}", Environment.UserName);
            while (true)
            {
                Console.WriteLine("Please guess a number between 1 and 100 (but don't tell me!)");
                Console.WriteLine("Press any key when you're ready...");
                Console.ReadKey(true);
                int guess = 50;
                int guesses = 0;
                int off = 25;
                Console.Write("I");
                while (true)
                {
                    Console.Write("s it greater than, equal to or less than");
                    Thread.Sleep(400);
                    Console.Write(".");
                    Thread.Sleep(400);
                    Console.Write(".");
                    Thread.Sleep(400);
                    Console.Write(".");
                    Thread.Sleep(1000);
                    Console.WriteLine(" {0}?", guess);
                    String response = Console.ReadLine();
                    int cont = 0;
                    foreach (String ans in lessthan)
                    {
                        if (response.ToLower().Contains(ans))
                        {
                            guess -= off;
                            off /= 2;
                            cont = 1;

                            ++guesses;
                            break;
                        }
                    }
                    if (cont == 0)
                    {
                        foreach (String ans in morethan)
                        {
                            if (response.ToLower().Contains(ans))
                            {
                                guess += off;
                                off /= 2;
                                cont = 1;
                                ++guesses;
                                break;
                            }
                        }
                    }
                    if (off == 0) off = 1;
                    if (cont == 0)
                    {
                        foreach (String ans in equalthan)
                        {
                            if (response.ToLower().Contains(ans))
                            {
                                cont = 2;
                                break;
                            }
                        }
                    }
                    switch (cont)
                    {
                        case 0:
                            Console.Write("I don't understand what you just said!\nI");
                            break;
                        case 1:
                            Console.Write("If it's not that, then i");
                            break;
                        case 2:
                            ++guesses;
                            Console.WriteLine("\n\nSo your number was {0}, eh? You never stood a chance. It only took me {1} guesse{2}!", guess, guesses, guesses == 1 ? "" : "s");
                            break;
                    }
                    if (cont == 2)
                        break;
                }
                Console.WriteLine("\n\n\nWould you like to play again?");

                int status = 0;
                do
                {
                    String resp = Console.ReadLine();
                    foreach (String ans in affirmative)
                    {
                        if (resp.ToLower().Contains(ans))
                        {
                            Console.Clear();
                            Console.WriteLine("Okay!\n\n");
                            status = 1;
                            break;
                        }
                    }
                    if (status == 0)
                    {
                        foreach (String ans in negative)
                        {
                            if (resp.ToLower().Contains(ans))
                            {
                                Console.WriteLine("Alright, I'll see you around!\n\n\t(Press any key)");
                                status = 2;
                                break;
                            }
                        }
                    }
                    if (status != 0)
                        break;
                    Console.WriteLine("I'm sorry, what do you mean?");
                } while (true);
                if (status == 2) break;
            }
        }
    }
}