In 2005, "Pokémon Emerald" was released. It is a sequel to "Ruby" and "Sapphire". It was the first "main" "Pokémon" game since "Crystal" where Pokémon had battle animations instead of static images. There was also a new place called the Battle Frontier where players could go after they beat the Elite Four. It was similar to the Battle Tower in "Crystal", "Ruby", and "Sapphire", except it was eight different facilities, all with different rules. Players earned Battle Points which could be used to buy items for Secret Bases, items for Pokémon, and other things.