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- For the international version, see Frostbite Caves - Day 30.
Frostbite Caves - Ultimate Challenge is the 25th and the last level of Frostbite Caves in the Chinese version of Plants vs. Zombies 2. Being a boss battle, the player is forced to defeat the Zombot Tuskmaster 10,000 BC to win the level. After completing this level, the player receives a money bag.