You must provide your own legal copy (ROM file) of the original game (e.g., Pokémon Emerald A Patcher/Randomizer: Universal Pokemon Randomizer if you have a settings file. if you are applying a ".ips" patch. An Emulator: Popular choices include for GBA games ( for DS games ( Standard Ludlocke Rules
Downloading ROMs or "ROM hacks" often requires you to own the original game. Be sure to check the legality of files in your region and use reputable community sources like the LudwigAhgren Wiki to find specific patches. Core Rules for Your Run
Always pick Hardcore Mode. The game was balanced for it. If you pick Casual, the AI will still crush you because the movesets assume you have no heals.
You may only capture the very first Pokémon you encounter in any new route or area.