Python - Cómo finalizar el llamado a arcade.run() en python…?

import arcade

def main():

    """ Main method """

    game = MyGame(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_TITLE)

    game.setup()

    arcade.run()

    print("Fin...!!!")

if __name__ == "__main__":

    main()

#-*- coding: utf -8 -*-

import arcade

class MyGame(arcade.Window):

    def __init__(self,SCREEN_WIDTH,SCREEN_HEIGHT,SCREEN_TITLE):

        super().__init__(SCREEN_WIDTH,SCREEN_HEIGHT,SCREEN_TITLE)

def main():

    """ Main method """

    MyGame(800,600,"Mi juego")

    arcade.run()

if __name__ == "__main__":

    main()