Thrilling the Zombies was an achievement unlockable on the old iPad version of Plants vs. Zombies. It required the player to hypnotize a Dancing Zombie. This is the equivalent of the Disco is Undead achievement in newer versions of the game. It was replaced by Disco is Undead after the Dancing Zombie got redesigned.
The name was a tribute to Michael Jackson's album Thriller, since the old Dancing Zombie was based on Thriller.
- See Disco is Undead.