The File Extensions Database

.SIMS3 File Extension

  • Developer by: Electronic Arts
  • Category: Game Files

What is an .SIMS3 file?

.SIMS3 is The Sims 3 Game Save File

Save file created by The Sims 3, a life simulation game that gives you control over simulated persons, or "Sims;" contains saved game data from the most recent save; includes game progress like character development, money amount, and new buildings; located in the "Saves" folder of the The Sims 3 directory along with .SIMS3.BACKUP files.

If you have a corrupt SIMS3 file that does not load, you can restore the game from your SIMS3.BACKUP file.

  • Copy the SIMS3 and SIMS3.BACKUP files and paste them into another folder for backup purposes just in case you make an error.
  • Go back to your "Saves" folder and delete the SIMS3 file that is not loading and delete it.
  • Remove the ".BACKUP" from your SIMS3.BACKUP file so that it looks exactly like the corrupt SIMS3 file you just deleted.
  • You can now load your game from the game menu.
  • Common SIMS3 Filenames

    [name of your game].sims3 - The filename created when you save your Sims 3 game.

    Programs that open The Sims 3 Game Save File
    Electronic Arts The Sims 3
    Electronic Arts The Sims 3

    How to solve problems with SIMS3 files

    • Associate the SIMS3 file extension with the correct application. On :
      Windows: Right click on any SIMS3 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.SIMS3 files". Mac: Right click (or Ctrl-click) the SIMS3 file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
    • Update your software that should actually open .SIMS3 is The Sims 3 Game Save File. Because only the current version supports the latest SIMS3 file format. Search, therefore, e.g. on the Electronic Arts manufacturer website after an available .SIMS3 is The Sims 3 Game Save File update.
    • To make sure that your SIMS3 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.