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Game Genie Guy!



Game Genie Guy! by Kyle

This is a small Windows utility for applying Game Genie codes to roms. This saves you the trouble of having to enter them each time the game is played.


1. Click the Browse button and select an unzipped Game Boy/Game Gear/Genesis/NES/SNES rom - The system dropdown should populate based on the file extension - The checksum box will also be enabled for non-NES games

2. Enter the desired codes, one per line. Multiple codes can be combined with +

3. Click Patch when all codes have been entered

4. Open the created ‘File GG.rom’ in an emulator to test

uCON64 is used for checksum correction. This is required if you are using flash carts. Most emulators are not bothered by it. I recommend the MinGW version because it has no dependencies.

Download and extract ucon64.exe to same folder as GGGuy.exe:


User Review Information

A great patcher

Reviewed By: Korokun on 14 Sep 2021

I use this when modifying prepatched ROMs. Esp those who’ve been hacked / spite change etc.

  • Open up GGGuy, find codes, patch them etc. Make sure you have both cygwin1 and cyggcc_s-1 dll(s) in the same folder then patch. No need to make an IPS of them.
  • Find game you want to patch it with. The match CRC does not matter.
  • PATCH MAIN GAME FIRST BEFORE ADDING HACK. (Not that it matters but still you want to be safe then sorry.)
  • PATCH .IPS ROMHACK to PATCHED game. It will add a “GG” at the end plus (patched) to it’s name.
  • For multi codes just add a “+” without quotations to them, and for singles, paste as is.
  • Try to refrain from 6 digit codes vs. 8. If using 6, test first to see if game will load and/or crash.
  • ???
  • Profit.

But like the below poster said, if you’ll pulling codes from GameHacking and they’re RAW e.g. ABCD:EF; a 6 digit GG code will more then likely crash a game vs. an 8 digit code.

That’s it!

Note: I pull all my gamegeine and hacking related codes from

Happy gaming!

Version 1.0 Recommended - Yes

User Reviews
A great patcherKorokun14 Sep 20211.0Yes
Troublesome but worksNES Universe02 Jun 20211.0Yes
Loving this app!TheHandsomeDan17 Jan 20181.0Yes
Freaking coolTeeporage77720 Dec 20171.0Yes