Board Thread:Weekly discussions/@comment-27101994-20170227104745/@comment-6031945-20170227120402

You want to know what could have made "Modern Day" more "modern"?

Having every new zombies from every would caused from such "expansion".

That also means that the dev team could have waited to finish every other world expansions before that world instead of rushing it to the point where it is a requirement to a "limited time" Epic Quest.