 The "Diamond" and "Pearl" Battle Tower uses this same system, and it is replaced by a Battle Frontier in "Pokémon Platinum".The "HeartGold" and "SoulSilver" games also have a Battle Frontier, identical to that of the "Platinum" version, where the Battle Tower was found in "Crystal".After a series of battles in each venue, players encounter who are challenged in the same fashion as all other battles, and the player will either earn a or a for winning.