WOLF RPG Editor is a game construction tool that can create complex role playing games. It is often regarded as being aimed at advanced users, so keep this in mind if you intend to use it. It was developed by SmokingWOLF (SilverSecond) in Japan.
This will work on Windows 10 & earlier. Installation instructions: Download and Unzip the folder of its contents. You will find the means to open and translate the WOLF RPG Editor User Manual, as well as create a manual for yourself or for others to use.