You can use it to run country-specific applications under your real OS language environment without the installation of additional language packs. It has been used in over 80 countries for playing games and still maintains its top position in this field. It is also an interesting toy for those who are interested in foreign languages. The application adapts automatically to your localization, locales, and codepages. It will correctly detect your real operating system version if you are in an area where MS Windows is in wide use. It can help you to run a program or a game written in one language under the system locale of another language. For example, you can play games that are only available in Japan while using your computer’s settings set to English, such as Microsoft DirectX games. For example, if you play a Japanese game in English Windows, the error “Executable not found” or “Unknown error” would be presented. If you are an international student or just a foreigner who is fond of the Japanese language, you may have encountered some difficulties when your video games do not function properly. Locale Emulator can help simulate these as if they are running on another country/region to ensure games can run properly, without any bugs due to game installation.
Locale Emulator is licensed as freeware or free, for Windows 32 bit and 64 bit operating system without restriction.
Since it has not been update for Windows Vista and Windows 7, you have to install it differently.
Is there a tool to set your locale to Japanese? HOW TO RUN LOCALE EMULATOR INSTALL