These decide how the non-playfield elements are rendered in game. These include:
border-left.png and border-right.png, which decide how the left and right side of the playfield look like.
border-left-top and border-left-bottom to change the appearance of the top and bottom of the left border.
border-right-top and border-right-bottom to change the appearance of the top and bottom of the right border.
hitline.png which shows where the hitwindow is for notes.
background.png is the image that will envelop the entire playfield, scaling itself so that it matches the width of the playfield and cropping out the excess height. You can also modify the top and bottom of this background with the images background-top and background-bottom.
| Left | Center | Right | |
|---|---|---|---|
| Top | border-left-top.png | background-top.png | border-right-top.png |
| Center | border-left.png | background.png | border-right.png |
| Bottom | border-left-bottom.png | background-bottom.png | border-right-bottom.png |