Board Thread:Plants vs. Zombies Adventures/@comment-5565348-20130613152803/@comment-5052376-20130613153243

I also heard they will make Brain Ball zombies tougher, because as Demian said on [talk.popcap.com], "It is next to impossible to invade and win on a well-defended town." Whaty exactly will be changed between the zombies, I dunno, but most likely the concentration of tougher zombies would be higher.