Sky City - Ultimate Challenge is the 25th and the last level of Sky City in the Chinese version of Plants vs. Zombies 2. Being a boss battle, the player is forced to defeat the Zombot Vulture Fighter to win the level. After completing this level, the player receives a money bag.
- Before the version 1.9.0, the player could not access this level. (Only Android)
- It shares this trait with Far Future - Day 30.