"Worlds" From this screen you will choose the world (background) that will show during the game. You will also choose the sprites (notes) you will be using. To choose different worlds, use the selector on the left of the screen. After selecting a world, use the selectors on the right side of the screen to choose a sprite. When you are satisfied with your selections you are all ready to play. Click the "Play Game" button in the upper right hand corner of the screen.