If you updated your game by downloading a new "Update" folder from a repacker and pasting it over your existing game, the updater likely overwrote the language settings.
Let’s break down the keyword.
Right-click the .exe file and select This is crucial. The tool needs permission to write to the Windows Registry and modify system files within the game folder. 3DMGAME-The-Sims-4-Language-Selector-Xuanze-Tools
The term "Xuanze" (选择) translates directly from Mandarin as "choice" or "selection." This is the philosophical heart of the tool. Many players—particularly those using versions of the game from specific regions like Russia or Poland—find themselves locked into a single language with no official path to change it. The 3DM selector acts as a digital key, modifying the Windows registry or game configuration files to point the software toward different localization strings already hidden within the game files. Why Players Seek It Convenience: If you updated your game by downloading a
: It allows players with region-locked versions of the game to access languages not originally available in their specific purchase. The tool needs permission to write to the
Close the tool and launch The Sims 4 via the TS4_x64.exe or the desktop shortcut created during installation. The game should now load in your selected language.