Create-A-Sim (CAS) is a cornerstone feature of The Sims 4 which allows players to personalize their virtual avatars with an array of hairstyles, clothing, and accessories. Many players find that they spend the majority of their time in CAS designing unique characters and recreating their friends and family as Sims. Staring at the standard blue-green screen background for hours on end can get boring, so players should consider downloading custom CAS backgrounds.
After finding and downloading the best create-a-sim background, players should look for a package file in their Downloads folder. Then, relocate it to the mods folder (Documents > Electronic Arts > The Sims 4 > Mods). Only one custom background may be downloaded at a time, so make sure to delete previously downloaded backgrounds before replacing them with a new one. Many of these backgrounds require the installation of a blob deleter, which removes the blue-green shadow from under the Sims. Without further ado, prepare to explore the vibrant community of custom content creators who have brought life back to their CAS backgrounds.
1 Colorful Backgrounds By Bobatrait
Add a splash of flavor to the Create-A-Sim feature with these colorful, boba milk tea-inspired backgrounds created by bobatrait. Solid colors are a perfect next step for a small improvement from the original blue-green background. There are several colors available from bobatrait's pallet, including oolong, rose, mango, and honeydew.
Players with a thirst for their favorite tea flavor would benefit from downloading this background pack. The soft shades are great for creating Sims free of distractions from patterns and artwork.
2 Pastel Backgrounds By Shasims
These dreamy pastel purple shades made by Shasims are perfect for players with a passion for purple. With these backgrounds, players can let the lavender colors lull them into a sense of virtual calmness and relaxation. This Sim stands out nicely against the shade titled "Violette."
For those looking to bring brightness to their background, there are lighter colors like "Sweet pea" and "Cornflower." Darker colors like "Lisianthus" and "Amethyst" also help Sims stand out. Shasims creates other backgrounds including nature themes in green, several shades of brown, and even gradient backgrounds.
3 Textured Backgrounds By Miss Mani
A custom content creator and YouTuber by the name Miss Mani has created several CAS backgrounds for players to enjoy. Textured backgrounds are a step up from standard colored backgrounds and add more decoration to plain CAS screens.
There are 13 backgrounds in this group with gradient styles titled "Midnight Run" and "Tequila Sunrise." Several of these gradient backgrounds make Sims appear to be standing in the spotlight. In addition, textured backgrounds like "Shatter Me" and "Shatter Me Too" appear to be photos of shattered glass while "Purple River" looks shiny and grainy.
4 Galaxy Backgrounds By Patreshas Editing
Embark on an interstellar journey with Sims by downloading these custom backgrounds created by Patreshas Editing. Players can indulge in their outer space fascination (or their Sims'!) With eight different cosmic options. Create alien Sims with backgrounds resembling their home planet of Sixam or put granny in backgrounds that are out of this world.
Players are free to let the beautiful views of the stars guide the customization of their Sims and let their imagination run wild when utilizing the endless in The Sims 4.
5 Pride Backgrounds By NekoChan-Simmer
NekoChan-Simmer made custom CAS backgrounds for players to represent their pride flags in the game. There are 36 different types of this artsy pattern to choose from, such as queer, intersex, and two versions of inclusive pride. This pink-haired Sim fits in perfectly with the Transfeminine pride background.
The Sims 4 is credited for including pride flags, pride-themed clothing, and sexual orientation options in their base game. Pride create-a-sim backgrounds can bring even more inclusivity to the game, adding several sexualities that are otherwise overlooked.
6 Flowery Backgrounds By GegeSims
This sunflower wall background was created by GegeSims. If players choose this background, their Sims can stand in front of a neon sign with the iconic Sims greeting "Sul Sul." Everything in this background is illustrated by scratch by GegeSims herself, including the hanging wicker chair and the closet behind the flower wall.
Sunflowers are symbols of joy and longevity, making this background the perfect choice for players who enjoy the flower, and especially for those completing the Garden Legacy Challenge for The Sims 4.
7 Cozy Room Backgrounds By Praleska
Create a haven of warmth and relaxation in the create-a-sim screen with these three backgrounds created by Praleska (with credit given to the artists Yongwoo Park, Jacek Ogonowski, and Maarten Hof).
The muted color tones and clutter decorations give the otherwise plain CAS screen a cozy feel and are aesthetically pleasing to the eye. There's a reason why this game is ranked one of the best cozy organization games. Players can dress Sims in an artsy or alternative style to match the theme in these backgrounds.
8 Seasonal Backgrounds By Katverse
Players searching for custom content can't look too far without finding a creator by the name Katverse. They create several CAS backgrounds, poses, and accessories for those looking to enhance their game. Many particularly enjoy downloading backgrounds to match the seasons like winter scenery from Mt. Komorebi (Snowy Escape) and summer beach scenes from Sulani (Island Living).
Escape to a tropical paradise without ever having to leave the confines of the CAS screen. These backgrounds are perfect for those who enjoy creating mermaids in The Sims 4 or for those who enjoy serene ocean views in general.
9 Old-School Backgrounds By Littledica
These old-school backgrounds were created by Littledica to place Sims in a bedroom complete with realistic shadows and a functional mirror. Sims stand in the spotlight as the sunlight streams into the room from a window with a view of downtown San Myshuno. Downloading and playing with this simplistic room background adds realism to Sim makeovers.
Players can choose from six different options, each with a different colored wallpaper: gray, blue, pink, yellow, green, and black. The old-school style transports players back into the vintage world of The Sims 3's create-a-sim background.
10 Nostalgic Backgrounds By Simsi45
This create-a-sim background, created by Simsi45, perfectly recreates the style of the background from The Sims 2 into The Sims 4 with its iconic brick walls and Sims artwork. Experienced players of The Sims franchise were overjoyed to rediscover the magic of nostalgia and experience the familiar charm of returning to this create-a-sim room in contrast to floating in the blue void of the classic screen.
Downloading this background provides the perfect opportunity to recreate realistic adaptations of townies from The Sims 2, such as the Goths, Calientes, and Pleasants.
The Sims 4 is available now for PC, PS4, PS5, Xbox One, and Xbox Series X/S.