If you’re feeling adventurous, why not go for a mesmerizing galaxy theme? Whatever you choose, just be sure to stick to using only one CAS background at a time to keep your game running smoothly. You could opt for a sleek and simple solid color backdrop, or perhaps create a cozy and inviting home setting. The possibilities are endless when it comes to choosing a theme for your CAS background. If you’re on the hunt for some fresh inspiration for your next Sims 4 Create a Sim (CAS) background, then look no further! Here are some fantastic ideas that are sure to add an extra dose of flair to your Sim’s portrait.