In this chapter, we are going to add background music to our game. Then, we will make our music fade in when the level starts, fade out when the level is completed, and stop if the player dies. After that, we will be using all the UI skills we have learned so far to create a pause screen and add some slider components to it (which will be used in the next chapter for volume controls). With the pause screen built, we will make our game pause by freezing the player, the enemies on the screen, bullets, and moving textures. Also within the pause screen, we will be giving the player the option to resume play or quit so that the game goes back to the title screen with the use of Event Listeners, which we learned about in Chapter 9, Creating a 2D Shop Interface and In-Game HUD. Finally, we will be extending our mini mock test to 20 questions to cover what we have learned from this chapter...