Devouring all those brains must have instilled some growing intelligence in PopCap's undead horde, as the free-to-play Plants Vs Zombies 2 has been updated with a number of clever fixes and additions.
Part of the free-to-play-isation of Plants vs. Zombies 2 was locking certain levels off behind gates, requiring players to farm keys (ho hah!) or give in and buy them. That's gone with the latest ...