In the Merged World the player can take the submarine south of the Phoenix Tower desert and dive to find the sunken Walse Tower. At the bottom the player can find a shard of the Water Crystal. Defeating Famed Mimic Gogo earns the Mime class. The player has seven minutes to complete this. Mastering Mime for all four characters in the mobile and Steam versions earns the player the achievement "Master of Mimicry".