By gnawing through a dike, even a rat may drown a nation.-Edmund Burke There are three kinds of monsters that every rookie adventurer can be expected to face.  The first is the goblin, the small green humanoids that often cause problems out on the frontier.  The second is the slime, the sneaky ambush predator that likes to drop down from the ceiling and seems to be just about everywhere. And then, there's the giant rat, the plague of the sewer and the tavern cellar.  But they're nothing but a petty annoyance, right? Right? Wrong. Giant rats multiply like wildfire and mature very quickly.  Unlike rats, they can very quickly exceed their available food supply and start hunting for human flesh the moment that nothing else is available.  A hungry swarm, unchecked, can eat a city alive. But not if The Ratter has anything to say about it.