Pokémon Emerald is a role-playing video game developed by Game Freak and published by Nintendo for the Game Boy Advance. Released in 2004, it is part of the Pokémon series and serves as an enhanced version of Pokémon Ruby and Pokémon Sapphire. Players take on the role of a Pokémon Trainer, exploring the Hoenn region, capturing and training various creatures known as Pokémon. In Pokémon Emerald, players can battle the Elite Four and the Champion, as well as encounter the legendary Pokémon Rayquaza. The game introduces new features, such as the Battle Frontier, which offers unique challenges and facilities for competitive play. Players can trade and battle with friends, enhancing the social aspect of the game.