The Earliest games didn't have backglasses or backboxes and ended up minor a lot more than playfields in bins. Games are usually built close to a specific topic, such as a sport or character and the backglass art displays this topic to attract the attention of players. Current machines are https://open.substack.com/pub/pinballcop/p/lightsabers-and-bumpers-a-look-at?r=3ltf5y&utm_campaign=post&utm_medium=web&showWelcomeOnShare=true