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.
Works on Windows 7, maybe Windows 8, and earlier. Will NOT work on Windows 10. Installation instructions: Download and Unzip contents, then watch the video. HF pAppLoc will enable you to open WOLF RPG Editor and see its contents in their original Japanese instead of gibberish.