There are also Recorded Videos and Screenshots folders here. Mods/CC are located in the Sims 4/Mods directory, and Sims, Lots, and Rooms you've made are stored in the Tray folder. If you know about backing up and just wonder where saves are stored, they're in Documents/Electronic Arts/The Sims 4/Saves. This is a tutorial to teach players how to properly ensure the safety of their Sims 4 save files - from the game data itself to mods and screenshots. If you've got to reinstall the game, you may need to do this as well. Saves are stored locally, so hard drive failure and errors can cause you to lose them unless you've backed them up. Losing your save game in The Sims 4 can go from a minor annoyance to devastation depending how much time you've invested in the game.
Backing these up can avert loss of Sims and prevent a lot of heartache. The Sims 4 Save Files Backing Up Sims, Creations, and Game Saves Many players have a lot of save files.