The Java GGEncoder program is a simple application (and applet) to encode and decode game genie programs.

The interface should be fairly self-explanatory. Just select the system you are using (NES, SNES, Game Gear / Game Boy, or Genesis), and fill in either the raw code or the game genie code. The one you did not fill in will automatically be generated.

If you need a text version, you can download the program and run it from a terminal or command prompt. See the readme for more detailed instructions on how to do this.

• Version 1.1 - November 16, 2004
  • Fixed bug in NES game genie encoding which created invalid codes on a real game genie (though emulators would probably use them anyway).
  
  
• Version 1.0 - July 17, 2004
  • Initial public release.