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By hacking the game, it is possible to access ten unused mini-games along with four variations on survival endless. All mini-games are fully functional, with the exception of Ice Level.
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In the "Achievement" menu, continuing to scroll down the page, past the list of achievements, will reveal a number of characters and items referencing previous Popcap games.
At the very bottom of the page are Zombies dressed in Chinese attire situated in front of a pagoda, implying it is the other side of the Earth.
At the very bottom of the page are Zombies dressed in Chinese attire situated in front of a pagoda, implying it is the other side of the Earth.
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The lawn string text codes in the PC version of the game contain names of three enemies that are never seen in the game: Dog Zombies, Walking Dog Zombies, and Propeller Zombies. The reason why they're not in the game is currently unknown.
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The Minigame 'Zombiquarium' is a direct parody of another PopCap game called Insaniquarium.
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Plants vs. Zombies was at one point going to be called "Lawn of the Dead", a pun on George A. Romero's Dawn of the Dead. The name was changed for legal reasons.
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