Plenty of older titles have available source code that anyone can pour over and modify, and one of those is Pokémon Emerald. This was the first Pokémon game that [Inkbox] played, and he added a ...

titled Pokemon Emerald, was launched in Japan in 2004, and in 2005 everywhere else. In this edition, Legendary Pokemon Rayquaza was added, with new story elements to extend the gameplay.