Collecting, trading and battling is what traditional Pokémon games are all about. This game offers players an opportunity to hone their skills and prove their abilities. Pokémon Emerald is an extension of Pokémon Ruby and Pokémon Sapphire, and shares the ultimate goal of stopping the expansion of either the Team Magma or Team Aqua realm. Players must keep balance in the world of Hoenn, where Team Magma or Team Aqua is trying to use Groudon (ground) or Kyogre (water) to try and take over. Rayquaza (sky) will help maintain this balance. Trainers will need to use their best battling strategies ever, because this game offers the most challenging Battle fields presented in a Pokémon game. Pokémon Emerald is the first Hoenn Pokémon adventure to allow players to trade and battle wirelessly.