string? input;

Console.Clear();
Console.WriteLine("Welcome True Programmer, to the final battle for the realms of C#.");
Console.WriteLine("------------------------------------------------------------------");
Thread.Sleep(1000);
Console.WriteLine("\nThis will be the final battle against the Uncoded One..."
        + "\nAre you ready?");
Console.WriteLine("--------------------------------------------------------"
        + "--------------");
Console.ReadLine();

while (true)
{
    Console.Clear();
    Console.Write("\nWould you like the heroes party to be controlled by AI? (yes/no): ");
    input = Console.ReadLine().ToLower();
    if (input == "yes" || input == "no")
    {
        if (input == "yes")
        {
            GameState.Instance.herosAIControl = true;
        }
        if (input == "no")
        {
            GameState.Instance.herosAIControl = false;
        }
    }
    else
    {
        Console.WriteLine("Please answer yes or no.");
        Thread.Sleep(1000);
        continue;
    }
    break;
}
while (true)
{
    Console.Clear();
    Console.Write("\nWould you like the monsters party to be controlled by AI? (yes/no): ");
    input = Console.ReadLine().ToLower();
    if (input == "yes" || input == "no")
    {
        if (input == "yes")
        {
            GameState.Instance.monstersAIControl = true;
        }
        if (input == "no")
        {
            GameState.Instance.monstersAIControl = false;
        }
    }
    else
    {
        Console.WriteLine("Please answer yes or no.");
        Thread.Sleep(1000);
        continue;
    }
    break;
}

Player player = new Player();
GameState.Instance.heros.Add(player);

Console.Clear();
Console.Write("Press Enter to to begin your battle to save True Programming...");
Console.ReadLine();

GameState.Instance.Run();