Board Thread:Plants vs. Zombies 2: It's About Time/@comment-5366868-20130731045928/@comment-12391511-20130803223445

It likely won't be linear though, because the developers will have less to work with after they've done the future if they have to keep moving further into the future. There'll probably be some inexplicable reason for them to go back to a certain time period for whatever reason. If the time periods kept moving further into the future, there would have to be a lot of abstract ideas that the consumer wouldn't be able to relate to. Concepts of Pirates, Egypt, and the Wild West are worlds that are familiar to many people.

I really like the idea of a war period. Maybe when the zombies can actually shoot back, much like the zombotany levels from the first game.