Are you tired of the boring and bland backgrounds in your Sims 4 Create a Sim (CAS) screen? Lucky you, today I picked out my favorite cc Sims 4 CAS backgrounds!

For those of you who don’t know, CAS backgrounds allow you to change the setting of your Sim creation screen, making it much more interesting, unique, and of course—aesthetic!

With the right CAS background, you can create the perfect mood for your Sim’s story, whether they’re living in a cozy cottage or a bustling city.

But don’t worry, I’m not just talking about any old CAS backgrounds. I’m talking about the crème de la crème of CAS backgrounds: Maxis-Match backgrounds!

These backgrounds seamlessly integrate with the Sims 4’s original art style, giving you a cohesive and polished look for your Sims.

***NOTE: many of these backgrounds are by Ellcrze, who has since left the sims community! I found an archive that reuploaded her content so we can all still enjoy it! ❤️ All Ellcrze links will lead to the archive, as opposed to the original posts, which have since been deleted!


Here’s my favorite sims 4 CAS Backgrounds for a more aesthetic game!

There are a ton of reasons why you might want to download Sims 4 CAS backgrounds.

Maybe you’re a Simmer who wants to add some pizzazz and personality to your game, or maybe you’re a content creator who wants to create a unique and immersive experience for your viewers.

Whatever your reason, CAS backgrounds are an easy and effective way to add some extra flair to your Sims 4 gameplay.

Remember: you can only have ONE custom CAS background in your game at a time!

RELATED: 6 AMAZING SIMS 4 LIGHTING MODS FOR A BETTER LOOKING GAME

Milk Tea CAS Sims 4 Background Pack

Milk Tea CAS Sims 4 Background Pack

The Milk Tea cc CAS background pack includes 12 solid colors in some super cute swatches!

I personally gravitate more towards neutrals and soft colors, so my favorites are Coconut and Lychee in this set!

Honeydew would make the perfect “green screen” if you’re taking photos in CAS to edit and want to cut your sim out!

Overall though, this set has some really, really lovely options, and some more colorful CAS backgrounds as well.

RELATED: 7+ UNBELIEVABLE SIMS 4 SAVE FILES (REALISTIC, DETAILED & AMAZING GAMEPLAY!)

Old School Sims 4 CAS Background

Old School Sims 4 CAS Background

The Old School Sims 4 CAS Background by LittleDica is one of my favorites!

It gives me big Sims 3 vibes, and I love how simple and clean it is.

It’s set in a beautifully maxis match room, so it fits my preferred game aesthetic perfectly. In total, there are 6 options to choose from.

The only difference is the wall color on the left, but having choices is always nice!

OshinSims Autumn Colors Sims 4 CAS Backgrounds

OshinSims Autumn Colors Sims 4 CAS Backgrounds

OshinSims is one of my favorite Sims 4 content creators over on Youtube!

Her gameplay style is SO cozy and wholesome and real.

It’s no surprise that she picked gorgeous, cozy fall swatches to make some CAS backgrounds!

THe perfect swap for sweater season!

RELATED: 31+ COZIEST SIMS 4 SWEATER CC FOR THE BEST FALL SEASON!

Cinnasims Sims 4 CAS Background Dump

Cinnasims Sims 4 CAS Background Dump

This Sims 4 CAS Background dump by Cinnasims is actually a recolor of LittleDica’s Old School background! Cinnasims added a little more personality and pizazz to these.

There are three options—2 “cute” swatches, and one “edgy” one.

My favorite is the one pictured above—it makes me think my sim is in Mt. Komorebi, with the mountain view out the window!

This is a great cc CAS background if you’re looking for a 3D room with a mirror that still has a minimalist style but isn’t too simple!

Warm and Cozy Sims 4 CAS Background

Warm and Cozy Sims 4 CAS Background

This is one of my FAVORITE cc CAS backgrounds! It’s simple yet feels so sophisticated, and the warm color tones?

The light coming through the window onto the floor? Chef’s kiss! I’m obsessed.

The Classic CAS room is one in a set of three.

There is a pink, girly swatch, and an edgy “scene” swatch, but the Classic swatch is my absolute favorite.

Cinnasims also included a set of CAS poses that work in the mirror, so if you’re interested in doing a photoshoot with your sims, make sure to snag that package file, too!

Beach Vibes CAS Background

Beach Vibes CAS Background

The Ocean Waves sims 4 CAS background is perfect for Sulani gameplay!

I love how cozy and detailed this CAS room is—the old rug, the wall decor, the shoes stored by the closet.

It’s giving Lilo and Stitch, lol, and I love it! So laid back and casual.

This CAS room only comes with the single swatch, but it’s a super great option if you’re looking for those beachy vibes!

RELATED: 29+ GORGEOUS SIMS 4 RESHADE PRESETS FOR A MORE AESTHETIC GAME!

Earthy Aesthetic Solid Color Sims 4 CAS Background Pack

Earthy Aesthetic Solid Color Sims 4 CAS Background Pack

This set of cc CAS backgrounds is perfect for my ~neutral girlies~ and boho lovers.

This set has four solid color swatches in the most gorgeous earthy tones: cotton, moss, clay and oat.

I love the 3D room CAS backgrounds, but sometimes you just want a solid color!

They’re soothing and simple, and perfect for photoshoots or creating lookbooks of your sims outfits.

Minimalist Sims 4 CAS Background by Ellcrze

Minimalist Sims 4 CAS Background by Ellcrze

This minimalist room CAS background by Ellcrze is actually the one I’m currently using in my own gameplay!

I love how simple it is and how high-end it feels.

Ellcrze is the QUEEN of sims 4 CAS backgrounds, and she never misses on the details. Just look at that sweater hanging off the mirror!

Moving Day CAS Background by Ellcrze

Moving Day CAS Background by Ellcrze

This sims 4 CAS background is moving day themed, and I LOVE the storytelling potential of this cc room!

All the clutter and details make me so freaking happy. Ellcrze’s knocks it out of the park yet again!

This CAS background would be perfect to use for a photoshoot or to take some great stills of your sims.

Or if you really like matching your CAS background to your gameplay and you’ve got a messy sim, or a sim who’s about to leave for uni!

Aloha Sims 4 CAS Background by Ellcrze

Aloha Sims 4 CAS Background by Ellcrze

The Aloha custom CAS room is another beach-themed background, and I love it!

This one is a little more detailed than the Ocean Waves one I shared above, although both have a similar aesthetic.

Some people prefer simpler CAS backgrounds, so I made sure to include both options. 🙂

Personally, I love all the clutter and detail in this custom CAS background! It feels like you’re right inside a beach shack on the beautiful coasts of Sulani.

The lighting in this one is stunning, too!

Bookstore Sims 4 CAS Background by Ellcrze

Bookstore Sims 4 CAS Background by Ellcrze

Where are my bookish girlies at?! This custom CAS background is for you!

It’s giving biiig academia vibes, and I love it.

The old books! The light! The hanging plant! This cc CAS room is just perfection.

Lavender Haze Sims 4 CAS Background Pack

Lavender Sims 4 CAS Background Pack

I feel the lavender haze creepin’ up on me. 🎵

Calling all Swifties, this lavender pack of custom CAS backgrounds is a must-have!

You have 9 shades of lavender to choose from and honestly, they’re all so gorgeous—soft, pastel, aesthetic.

Pick your favorite and drop it in your mods folder and soak in all the lavender vibes!

Historical Sims 4 CAS Background

Historical Sims 4 CAS Background

This custom CAS background is a little different! This one is perfect for historical gameplay for better immersion.

It’s modeled after a 1900s clothing shop, which is so creative!

This is a must-have CAS background if you’re playing a Sims 4 Decades Challenge, or HollieBB’s Upgrowth Challenge!

RELATED: SIMS 4 DECADES CHALLENGE QUICK-START GUIDE: RULES, TIPS, AND STARTER SAVE FILE DOWNLOAD!

Personally, I love playing the occasional historical gameplay, and plan to do more posts on my favorite historical CC soon!

In the meantime, I hope you enjoy this CAS room!

Psssst: I linked a SUPER amazing 1890s starter Decades Challenge save right over in this post here!

Film and Light Leak Aesthetic Sims 4 CAS Background

Film and Light Leak Aesthetic Sims 4 CAS Background

The Euphoria custom CAS background pack is such a unique, cool set!

These CAS backgrounds have an old film and light leak effect and are so aesthetic.

These backgrounds are unlike anything else I’ve seen, and I just think they’re so neat!

There are 4 slightly different variations to choose from.

RELATED: 15+ SIMS 4 SKIN OVERLAYS AND CC SKINS FOR BETTER LOOKING SIMS

Christmas Morning Sims 4 CAS Background

Christmas Morning Sims 4 CAS Background

I love this Christmas Morning custom CAS background by Cinnasims!

It is all decked out with holiday decor, and tons of present boxes.

It’s the perfect background for a Christmas themed photoshoot, or just to get yourself in the holiday spirit around December!

Christmas CAS Background by Ellcrze

Christmas CAS Background by Ellcrze

Here’s another option for a Christmas-themed CAS background! This one is for all my Ellcrze lovers out there.

I love both options, and could see myself flipping between the two during the holiday season. 🙂

Note: Ellcrze takes her preview photos using Reshade! So her sims 4 CAS backgrounds might look a bit different in your own game.

Throwback! Sims 2 CAS Background

This CAS background is SUCH a throwback!!! It’s a remake of the CAS room from The Sims 2, and oh my god, it is spot on.

Be sure to check out the preview video above to see for yourself!

This sims 4 CAS background is just drowning me in nostalgia, lol. I love it!

Cluttered and Cozy Sims 4 CAS Background

Cluttered and Cozy Sims 4 CAS Background

This custom CAS background is perfect for lovers of all things cozy and vintage and cluttered.

All the furniture and decor makes think of Grandma’s House or maybe even a resale shop.

Either way, this is a super cute option for your CAS background!

Life Is Strange Sims 4 CAS Background

Life Is Strange Sims 4 CAS Background

This cc CAS background is actually from another game entirely—Life Is Strange!

However, I think the textures still feel like they fit in with the sims aesthetic, and I just love how cluttery and messy this bedroom is.

This one definitely leans a little more maxis-mix (a combo of maxis-match and alpha textures) BUT I think it’s super unique, so I wanted to include it!

Ellcrze Attic CAS Background

Ellcrze Attic CAS Background

This cozy attic sims 4 CAS background by Ellcrze is so aesthetic!

I love the sunset out the window—it’s giving me Copperdale vibes! And of course, you’re probably not surprised that I love the clutter.

When I used this CAS background, I think I had a mod conflict, because my CAS UI was being a little funky—so keep that in mind if you run into any issues!

It seems to work for everyone else, so I think I had a mod that didn’t get along with this one, haha.

But I always love an Ellcrze custom CAS bg!

Messy Bedroom Sims 4 CAS Background

Messy Bedroom Sims 4 CAS Background

Here is another beautifully cluttered CAS bg option!

The lighting in this one is a little less immersive, and the textures are definitely maxis-mix, BUT I think this background could be really cool if you have a sim style that fits this vibe.

My current gameplay sim, Archie (I’m doing the Star Sign Legacy challenge with him as my founder!), looks really out of place here, lol.

But it’s still a lovely background!

Bonsai CC CAS Background

Bonsai CC CAS Background

The Bonsai CAS background by Ellcrze is so, so lovely.

It’s simple and minimal, and asian inspired. Perfect for your sims living in Mt. Komorebi!

I love the textures and colors of this background. It’s just so incredibly peaceful!

Playroom CAS Background

Playroom CAS Background

GUYS. This custom CAS background is so stinking adorable! This one goes perfectly with Growing Together and the new infants update, IMO!

This background is a playroom, and cluttered to the brim with toys.

So perfect for family gameplayers, or a photoshoot with your brand new infants!

Vinyl Store Sims 4 CAS Background

Vinyl Store Sims 4 CAS Background

This Record Store custom CAS Background by Ellcrze is SO cool! It’s so trendy and fun and creative.

And okay, maybe it’s weird for your sim to be getting dressed in a vinyl store, but this one would be perfect for photoshoots, or just setting a unique aesthetic for your game.

Luxe Walk-In Closet Sims 4 CAS Background

Luxe Walk-In Closet Sims 4 CAS Background

This CAS background is a classic walk-in wardrobe! Perfect for your bougie, fancy sims. There are 3 color options to choose from.

I love the darker one for male sim photoshoots! But my absolute favorite is the one I shared above—the bright colors are so chic and modern!

Sims 4 Y2K CC CAS Background

Sims 4 Y2K CC CAS Background

The Y2K CAS background is so pink and fun and girl and NOSTALGIC, I’m obsessed. Another amazing custom background by Ellcrze!

This one has such fun personality and would be amazing for photoshoots!

Artist Loft Sims 4 CAS Background

Artist Loft Sims 4 CAS Background

The loft style is one of my favorites!

Give me brick walls and wood floors and plants everywhere any day! This CAS background is so gorgeous, and perfect for your city-loving sims.

Elegance Sims 4 Cas Background by Felicity

Elegance Sims 4 Cas Background by Felicity

For classy girls and beige queens alike ✨

This neutral, contemporary CAS background is STUNNING, and the perfect aesthetic vibe.

Xureila’s Nostalgia Y2K Sims 4 CAS Background

Xureila's Nostalgia Y2K Sims 4 CAS Background

Throwback your CAS screen with this custom background!

It the TLC poster, Hello Kitty pillow, and box TV for me. 🥵


And that’s a wrap on my favorite Sims 4 CAS Backgrounds!

I hope you enjoyed this round-up and found some beautiful, new aesthetic backgrounds to add to your game!

Looking for some awesome new clothes for your sims to model in CAS? Check out my CC Clothes round-up, or my Best CC Packs round-up for more CAS goodies!

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