Onto Gen 3 now, and these were all games that were released on the Game Boy Advance! Again, the world got a little bit brighter and more colourful, and there were even more new creatures to catch. Go to the file location of your ROM, then click it to select it. Clicking it prompts a File Explorer or a Finder window to open. It’s in the upper-right side of the Universal Randomizer window.

On a Mac, the Universal Randomizer is a Java file, meaning that it resembles a coffee cup.

The Universal Randomizer window will open. Double-click the randomizer item inside of the unzipped folder.

Mac – Make sure that you have the Java JDK installed, then double-click the downloaded ZIP folder and wait for it to extract.

Windows – Open the downloaded ZIP folder, click Extract, click Extract all, and click Extract.

This process will vary slightly depending on whether you’re using Windows or a Mac computer:

3 Install the Universal Randomizer application.

The Universal Randomizer supports randomizing Pokémon games from generation one all the way through every game in generation five.

2 Go to in your computer’s web browser, then click the download link for your operating system, you’ll click the link).

You cannot randomize a Pokémon game while playing on a console or a mobile platform.

You can download both ROMs and emulators from places like LoveROMS and EmuParadise.

In order to randomize a Pokémon game, you’ll need a ROM for the Pokemon game, and an emulator installed on your Windows or Mac computer is required to play the game.

1 Make sure that you have a ROM and an emulator.

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