 Later additions to the pool of conditions for evolution include dependence on the Pokémon's friendship level, the time of day in the game, carrying a unique item while being traded, the gender, the area in the game where the Pokémon levels up, having a separate specific Pokémon in the player's party, trading for a specific Pokémon, knowing a certain move, or holding the game console upside down.The player can choose to halt evolution at any time before the animation is finished by pressing the B button, unless the evolution was initiated by using an evolutionary stone on the Pokémon.Pokémon whose evolutions are canceled will attempt to evolve again after the condition for evolution is met again.