As this is a fan game made with Pokémon Essentials, it is typically a executable rather than a ROM file. You do not need an emulator; simply download, extract the folder, and run the Game.exe file. catchneko/pokemon-photon - GitHub
Because direct linking is against some forum rules, follow these steps: pokémon photon download
Pokémon Photon is a fan-made ROM hack that offers a unique Pokémon experience. The game is set in the Hoenn region, just like Pokémon Emerald, but with some significant changes. As this is a fan game made with