 Another similar feature is the , where the player advances through a ranking system based on the French nobility system after battling increasingly difficult Trainers, including being able to battle the Gym Leaders, Elite Four members, and Champion in the same system.In "Pokémon Omega Ruby" and "Alpha Sapphire", the Battle Maison returns, but the Battle Frontier, which was featured in the original "Pokémon Ruby" and "Sapphire" games, is hinted to be in production.The Battle Maison is very similar to the one in "Pokémon X" and "Y", but TMs (Technical Machines) cannot be bought; they are replaced by other items.