Power Up Sound
Win Sound
Lose Sound
Sound is one of the main components that keeps players interested. You don't have to be a sound enthusiust to enjoy great sound. Anything you hear while playing contributes to the expirience. The you hear when you complete an objective gives players dopamine hits that keep them playing. Some people trigger certain events in game on purpose just to hear specific sound effects.
Game Theme
Music keeps the beat no matter what. Soundtracks often set the tone of perspective scenes. I've come back to games because I couldn't get tunes out of my head. Some songs start at the perfect time to combine with what taking place on screen to form situations and moments that once expirenced are then hard to forget.