: Click "Open ROM" in the tool to select your HeartGold file. Choose your preferred settings (see below), then click "Randomize (Save)" to generate a new, unique .nds file.
You need a ROM of Pokemon HeartGold . The file should be approximately 128 MB to 256 MB. Look for the following identifiers in the file name (though file names vary): Pokemon Heart Gold Randomizer Rom Download
The Ultimate Guide to Pokémon HeartGold Randomizer ROMs: How to Download, Setup, and Play : Click "Open ROM" in the tool to select your HeartGold file
If you've played through the Johto region more times than you can count, the standard experience can start to feel predictable. This is where a comes in. Instead of starting with Chikorita , Cyndaquil , or Totodile , you might find yourself choosing between a Mewtwo , a Garchomp , and a Magikarp . The file should be approximately 128 MB to 256 MB