Re: Plants Vs. Zombies 2 World Idea
Oh wow. You've evidently put in a lot of thought into that and the idea sounds freaking amazing!!!
Now here's where I disagree with you:
A) There's no unique time period to associate, and the "people trying to find it" makes it sound kinda Lost City-ish. You might have to change the time period to sometime else.
B) The Zombot Submarine and Pufferfish Zombie seem quite unoriginal when compared to your other ideas. Instead you could maybe have a moving robot-statue or something like that for the Zombot, and maybe replace your Pufferfish Zombie with something else.
This is one of the best world ideas I have seen in a long time though.