main game class of a basic FNA project

Controller.cs

using Microsoft.Xna.Framework;

namespace YourNamespace
{
    internal class Controller : Game
    {
        private static string Title = "Title";

        public const int WIDTH = 1280;
        public const int HEIGHT = 720;
        public static Controller Instance;

        private Color ClearColor { get; set; } = Color.White;

        private GraphicsDeviceManager Graphics;

        public Controller() : base()
        {
            Instance = this;
            IsMouseVisible = true;
            Graphics = new GraphicsDeviceManager(this);
            IsFixedTimeStep = false;

            Window.Title = Title;
            Window.AllowUserResizing = false;
            Graphics.PreferredBackBufferWidth = WIDTH;
            Graphics.PreferredBackBufferHeight = HEIGHT;
            Graphics.ApplyChanges();
        }

        protected override void Draw(GameTime gameTime)
        {
            base.Draw(gameTime);
            GraphicsDevice.Clear(ClearColor);
            //begin render
            //...
            //end render
        }
    }
}