These 150 or so artwork files will work with any version of MAME, but are not recommended for the Xbox version, as they render the game screen so small as to be painfully eye-straining even on a large TV. The idea of them is simply to make the game look more like you're actually playing it in an arcade. If you've already downloaded any of my Visual Pinball tables from elsewhere on this site, you'll be familiar with both the concept and the wallpaper. (Hey, it's the same arcade.)