MTS2:Creator Guidelines/Sims 4 Sims

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Sims 4 Sim Upload Guidelines

When uploading a sim for The Sims 4 to Mod The Sims, we have some basic requirements to ensure that your upload is good, shown well, and has the correct info and files needed for people to use it in their games. This allows both moderators to check your uploads for quality, and for downloaders to see if your item is something they want to add to their games.


  • Likeness: Sims based on a person or character must be recognizable as who they are meant to be.
  • Uniqueness: Any "other" sim, not based on an existing person or character, must have a unique, interesting face sculpt with all the features sculpted, not resembling the default faces. When it comes to sims, having a pretty sim or one with nice content is not enough. Anyone can take a basic face with a few tweaks here and there, add some pretty content, and make an attractive sim - we're looking for unique, interesting sims with unusual facial features. We would rather see sims that look more like real people - not so pretty but interesting - than another "hot model" type sim with a bland face that anyone could make. There is no reason for anyone to download a random sim that they could have made themselves with a few minutes and the same content. Please make a real effort to make interesting, unique faces that not just anyone could put together. This includes anime/cartoon sims, and some effort should be made to give them a unique look, and to differentiate characters by more than just content.
See this excellent tiptorial on creating unique sims: Game_Help:Creating_Sims

We've also made our own small example page of default sim faces in the game so you can clearly see what we check the sim's face is the closest to, and therefore considered not unique: Sims 4 default faces

  • Other content: If you have made content for your sim, you must also provide additional pictures and/or information for your custom content (like polygon counts if you've made a mesh). Make sure you see what we require for Sims 4 CAS uploads. Tip: Consider uploading content you have made separately first, to the appropriate section (clothing, hair, etc.) so people looking for that type of content can more easily find it, and so you can show it off better with its own separate pics and info. Then you can just link it as credit to yourself when uploading your sim.


Saving and sharing your sim
Step 1: Save Save the sim as a household, by clicking the button at the top right of the Create-a-Sim screen.

Note: Sims in TS4 are saved as households rather than individual sim files. We ask, however, that when you upload here, you only upload household files with single sims in them. If you'd like to upload a set of sims, please do it as separate households. Households can be merged by the downloader if they want to combine two or more one-sim households. If you have made a household with multiple sims, save it first so all your sims are saved, then remove the extra sims, and save the household again as a separate file.

Step 2: Finish Save Write a description for your sim, if you want, in the household info screen, and then click the save icon on the bottom right. If you get a popup saying "Template already exists in My Library. What do you want to do?" then choose Save New.

Step 3: Find Household Files

A) Open the My Documents\Electronic Arts\The Sims 4\Tray folder.
B) Click the button at the top right to bring up the folder view options, and choose Details.
C) Click on the Date Modified header to sort by date.
D) There should be five files that have all the current date and time (when you saved your sim). There will be one .householdbinary file, one .trayitem file, one .sgi file, and two .hhi files. Don't worry if these files have different icons than shown (icon doesn't matter). Select all five of these files. These are the five files that you will need to put into a .rar, .zip, or .7z file to upload to MTS.

Zip, Rar, or 7z
To upload your file(s) to MTS, you will need to compress them into an archive file, which makes them smaller and allows you to include many files in one download. The archive file formats we currently accept are .zip, .rar, and .7z.

For instructions on compressing your files into an archive, please see: Creator Guidelines: Creating Archive Files.

  • Do not include multiple archives with the same contents - that is, please don't put your files in both a .zip as well as a .rar because some people only want .zip files. Choose one format.
  • Do not double-compress your files... a .rar file inside another .rar file (or any other archive inside another) doesn't compress it anymore, and it makes it so we can't see the contents without downloading, and also just makes an extra step for the people downloading.
  • The file size limit on MTS is 50 mb. If you exceed this limit you will need to split your archives. This should probably never come up except for large worlds for The Sims 3, or huge sets of smaller items.


Title & Description
Give your upload a descriptive title and write a text description for your upload, describing what you're uploading. Your title and description must be in English or provide an English translation. If you are not a native English speaker, using Google Translate is okay. You can also ask for help writing your description in the Creator Feedback Forum.
Credits and links for custom content
You are responsible for providing accurate descriptions, links, and credits for all pieces of custom content required for your sim. This is to give credit to the creators for their hard work, and to make sure downloaders can get the required content.

Crediting and Linking:

You must identify everything on your sim, and track down who made it so you can give them credit for their creation, plus and a link back to the original thread or webpage where you downloaded the item. This will be a "shopping list" for downloaders so they can get each item of custom content (CC is not saved with your sim and must be downloaded separately).

A proper link and credit should look like this: "Long Wavy Hair by Nouk:" - what the item is, the creator's name, and a link to where the item can be found. Start a text file on your computer where you can type everything out as you locate the parts. It's a good idea to start your text file by typing in the custom items you know are on your sim (skin, hair, lipstick, etc.), so you know when you have a credit and link for each item. Then you can begin filling in each item as you find out where it came from.

  • Tip: To find custom content, you can try to search MTS or Google with the information you can find on the item (from the description or filename) to track down the source. If all your searching fails and you can't find the item on your own, try the Where Can I Find (WCIF) Forum at MTS. You can search the forum in case someone has asked about the same item before, and if you can't find what you're looking for, you can post a new thread to ask if someone knows where the content came from. Give as much information as possible, like a screenshot, the description, filename, and any other info you can to help people help you track it down.


You will need to include at least:
  • Close-up pictures of the sim's face, from the front,and from the side with the sim wearing a neutral face expression (like a passport photo) - not smiling, laughing, etc. A 3/4 view is highly recommended, but not required.
  • At least one full-length picture of your sim from the front and in neutral stance (not very posed or on the move).
  • Your photo should be taken in-game, although CAS photos are acceptable if they have a neutral expression and pose AND a neutral backdrop is installed.
  • For sims based on a person or character, a comparison picture of the real person, ideally similar to the close-up pictures of your sim, following the format above.
  • If your sim normally wears a mask, goggles, sunglasses, etc., you should also include a picture of your sim uncovered as well, if their face is too covered to tell whether the sculpting of the face is unique and interesting or accurate to the person they're based on (if applicable).
  • If your sim wears heavy makeup that limits what can be seen of their face, please also provide a makeup-free photo.

Keep the following in mind for your screenshots, especially the required ones:

  • Size: 800 pixels wide by 600 pixels tall is a good size for the smallest pic you would want to upload. Your images can be up to 2560x1440 pixels, and 800 kb, so you have lots of space to work with!
  • Lighting: For most things, it's best to take pictures in an interior room with good lighting. For lots, pictures should be taken during a nice sunny day, for floorplans, take the pictures with the lights ON.
  • Clarity: Neither blurry, nor pixellated/crunchy. Do not size up small pictures to make a large one as this will blur them, and make sure not to use too much compression/too low quality when saving your images.
  • Distance: Take your pictures so that your creation fills the screen without anything cut off at top or bottom - neither zoomed in too close, nor zoomed out too far.
  • Distortion: If you resize your images, retain the aspect ratio so they don't get stretched or squashed. Take care when zooming in and out with the camera that you do not create a fisheye effect on your pictures.
  • Photoshopping: Do not apply filters like sharpen, contrast, etc. to the required pictures, as downloaders want to see what your creation will look like in their game, not your skills at using Photoshop.
  • Attached: All required images must be attached directly to the MTS upload, not just inserted using the img tag, so that even if the pics get deleted from your Photobucket (or other host), the upload on MTS is still complete.
  • Show all items: For most areas, if you are uploading a set, you must take all the required pics for each item in the set. If there is an exception, it will be noted.
  • Picture limit: You may upload up to 100 pictures for a single upload thread, so feel free to add some additional pictures just to show off your work to its best. Of course, keep it reasonable - nobody needs 50 pics to show off one sim or hair.
  • Inline pictures: Inline pictures are those that use the [img] tag to show up in with the description text. So that it doesn't take too long to load, please keep this to no more than 4 pictures done inline, unless you put them inside an [infobutton] tag. To do this, see our guide on post formatting.

Please remember, for your required pictures:

  • As packaged: Your pictures should show your sim as you have saved them, so that what downloaders see is what they'll actually get.

Tip: You may, of course, include other pictures like a full-body picture, posing pictures, whatever, to show off your sim how you like, and if your sim is a child or teen, you may want to include a picture of how they'll look when they grow up, just so downloaders aren't surprised when if your cute kid turns into a weird-looking adult.


Uploads not allowed on MTS
These items are not allowed on MTS in any category.
Pay/Pirated Content

Everything required or recommended for an upload must be freely available, without having to pay.

  • No uploads requiring pay content: We do not host content (for example, recolours of a pay hair or object mesh) that absolutely require pay content to function in-game.
  • No optional pay, pirated, or stolen content: Even for optional or recommended content not absolutely required for the creation to work (for example, hair on a sim or a couch on a lot), this means:
    • No content you must pay for. This means you cannot use items that are pay, donation, subscriber only, "special gift", etc. type content, anything accessible only when you pay money or subscribe.
    • No content from sites that are repositories of unmodified content when it is still available from the original creator, whether these items are pay or free (no Booty or Simscave, torrents, sites full of stolen content or similar, but the Graveyard and sites that offer recolours or modifications with the mesh are okay).
    • No EA content simply converted to base game use with no other changes.
    • No pirated EA Store content. EA Store content, linked to the legitimate EA Store, is okay though. TS2 store content may be included, with proper credit, since the store is no longer available.
Other content not allowed
  • Items that belong on the adult site: No content posted on MTS can have visible nudity, sexual content, or adult content, and instead must be posted on our adult site, Sexy Sims. This means on MTS, you may not post:
    • Content that contains nudity, which we define as exposing the female nipples, or the butt crack/genitals of either gender, including semi-transparent stuff like a sheer bra. Items that are merely "sexy" like skimpy miniskirts or string bikinis are fine on MTS. Transsexual/transgender items are also not considered adult content unless they contain nudity.
    • Skintones containing genital details - female nipples are okay on MTS but see below regarding screenshots.
    • Images of skintones with uncensored female nipples. Please blur or cover the nipples, butt crack, and genital area when taking screenshots of your skintones.
    • Fine art uploads containing visible nudity.
    • Items with specifically sexual content (sex toys, sexual poses).
    • Items containing swear/curse words
    • Items relating to illegal drugs. Prescription and over-the-counter drugs, alcohol, and tobacco are okay on MTS though.
  • Sexualized children: We do not allow any sexy/sexualized content for baby, toddler, or child sims in any way - no breasts whatsoever on child sims, no "sexy" outfits, etc. If you want to make preteens, make a less developed body for teen sims. Sexualized child content is not allowed at our adult site either.
  • Offensive content: Racist, sexist, homophobic, transphobic, bigoted, hateful or otherwise offensive content will not be allowed. Again, also not allowed at our adult site.
  • Gore/violence: We do not allow uploads which feature prominent, graphic violence and/or gore. Examples of things we do not allow would include items centred around mass shootings, images showing explicit violent imagery, cannibalism, and infanticide. Limited violence and gore may be featured if not the dominant focus of the upload, and not excessively graphic. Think a PG-13 movie. If uncertain whether your upload crosses this line, we suggest making a thread in the Creator Issues forum asking for feedback from a moderator before uploading.
  • EXE installers: Creators are not allowed to post exe (or other executable) files for any area of the site but Modding Tools. If your content needs to be installed to a certain directory, you can compress your files and leave the directory structure intact, so you can tell people to just install to Program Files, for instance, and the files will go where they need to. Executable installers can easily hold viruses, and are generally not needed for installing most content.
  • Preorder bonus content: Certain items were only available if you preordered certain expansions or stuff packs from certain retailers. It's unfortunate if someone missed out on getting them, but they can't be redistributed here as EA has made it clear that they do not allow it.
  • Unmodified EP/SP/Store content: While it is common practice to modify and use bits and pieces of game content to create custom content, extracting content from an expansion, stuff pack, or Store item and uploading it unmodified is not allowed on this site. You are welcome to upload significantly modified versions of expansion, stuff pack, or Store content, but you can't just be ripping it and changing one tiny thing (or nothing) just so people who didn't purchase it can still use it.
  • Stolen/reuploaded content: This should go without saying, but do not upload content made by others and claim it as your own, in whole or in part. Don't upload the work of someone else without their permission... if they wanted to share it at MTS, they can easily upload it here themselves.
  • Uncredited content/violating permissions: If any part of what you have uploaded (mesh, textures, alphas, bump maps, coding, etc.) comes from somebody else's work, you MUST provide a link and credit in the text of your post, for the original author. State what you've used of theirs, the author's name, and give a link back to them. You must check the author's policies to see if you can use their content in the way you want, and you may not violate any policies stated. If there are no policies or they don't disallow your type of usage, or the site is permanently offline, then you can assume it's okay. Please see here for more details: Updates and Remixes of Creations.
  • Redirects: If you want to move a creation to another site, please remove your upload from MTS, don't just edit the text to point to a different site.
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