public void Update(GameTime gameTime, Game1 game)
 {
     if (Keyboard.GetState().IsKeyDown(Keys.Enter))
     {
         //In full game, Changes Gamestate to InGame or equivalent.
         //As of this writing, my attemptsto pass through an enum state change have been fruitless, so for now just closes the game.
         game.Exit();
     }
 }
 static void Main(string[] args)
 {
     using (var game = new Game1())
         game.Run();
 }