Board Thread:Plants vs. Zombies 2/@comment-24922984-20150606222433/@comment-25982947-20150609225152

Reapeageddon wrote: Just because they placed those zombies there doesn't mean they're gonna add clones in PvZ2. I never said anything about clones, just that those zombies could be similar enough to what PopCap had in mind that they could give the team an idea of how the balance for the world would work.

For example in Frostbite Caves they could've tested the balance by having Seagull Zombies, Octo Zombies, Barrel Roller Zombies and Chicken Wrangler Zombies together in a level as a way to see how Dodo Zombies, Hunter Zombies, Troglobites and Weasel Hoarders would work together, and use that as a base for balancing. Notice how none of those zombies from previous worlds are exactly the same as the new zombies added in FC, but they are close enough to give PopCap an idea of what things to change and add for the new zombies to work like they intended.