In the settings area of Candy Crush Friends, you can toggle on and off the music and basic sounds, but there is also a mushroom toggle button. I've played with it on and with it off, and have no clue what it does. I asked the devs for help, they sent me here. So .. anyone know? (sorry about this - they want you to choose a game, yet don't list the one I'm referring to, so I'm just choosing Candy Crush)