This simple gameplay change makes for a challenging and hectic experience. You'll need to place a separate set of defenses on each lane, constantly staying aware of what's coming for you in each sector. In PvZ, zombies will approach down 6 horizontal lanes.
In most tower defense games, such as Bloons, enemies will come at you down a single set path, and you'll be tasked with strategically placing defenses along that path. PvZ takes a unique approach to the standard tower defense formula.