HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Capcom\Street Fighter X Tekken Find the Language Key : Look for a key named on the right side. Change the Value : Double-click it and change the value to (this is the hexadecimal code for English). Note: Russian is usually 1049 : Close the Registry Editor and restart the game. Option 3: Adjusting Windows Region Settings
For certain versions, the language might be hardcoded in a configuration file within the game's directory: street fighter x tekken change language russian to english
If that fails, go to your AppData folder ( %appdata% ), find the Capcom folder for SFxT, open config.ini with Notepad, and manually change the language line from "russian" to "english". find the Capcom folder for SFxT
If you’re already in the Russian version and want to try changing it from within the game: open config.ini with Notepad