def METHOD_NAME(self):
    self.enemy_list = arcade.SpriteList()
    self.bullet_list = arcade.SpriteList()
    self.player_list = arcade.SpriteList()
    # Add player ship
    self.player = arcade.Sprite(":resources:images/space_shooter/playerShip1_orange.png", scale=0.5)
    self.player_list.append(self.player)
    # Add top-left enemy ship
    enemy = arcade.Sprite(":resources:images/space_shooter/playerShip1_green.png", scale=0.5)
    enemy.center_x = 120
    enemy.center_y = SCREEN_HEIGHT - enemy.height
    enemy.angle = 180
    self.enemy_list.append(enemy)
    # Add top-right enemy ship
    enemy = arcade.Sprite(":resources:images/space_shooter/playerShip1_green.png", scale=0.5)
    enemy.center_x = SCREEN_WIDTH - 120
    enemy.center_y = SCREEN_HEIGHT - enemy.height
    enemy.angle = 180
    self.enemy_list.append(enemy)