To play Pokemon Emerald Rogue, you must install a Gameboy Advanced Emulator and the base Emerald Rom. Next, you will need to patch Emerald with the Emerald Rogue files. But don't worry; this is an easy process. Pokecommunity and Relic Castle are the one-stop communities for Pokemon fan-made games, and they are the most trusted websites within the Pokemon fanmade community. Once you have downloaded Emerald Rogue and base Pokemon Emerald, it's time to patch it. To patch Emerald, you can use the simple online Rom Patcher, upload each file to the corresponding upload box, click "Apply Patch," and download Emerald Rogue. Now load up your emulator and open the Emerald Rogue ROM. You'll know the patch has worked if you see the Pokemon Emerald introduction cutscene, red text displaying Emerald Rogue files, and a Wobbuffet on the main menu.