: Simply drag your .rgss3a file onto the RgssDecrypter.exe or run RgssDecrypter -p Game.rgss3a in the command line. Source : usagirei/RGSS-Decryptor on GitHub .
If you don't want to download sketchy .exe files from the internet, there is a fantastic web-based solution. Developer created a browser tool that handles various RPG Maker formats. How to use it: Visit the Petschko RPG Maker Decrypter website. Drag and drop your .rgss3a file into the browser window. extract rgss3a files