The Rat Farm can be accessed through a hidden entrance off The Soake in Ankh-Morpork.
The Rat Farm is an instanced dungeon with a randomly generated map. Generally the Rat Farm generates with between 3 and 6 levels but more and less are possible.
These come in a number of varieties including Fat, Large, Round and Sleek. They auto-attack on sight. Although a weak NPC, they are considerably stronger than the other rats in Ankh-Morpork including Evil Rats. Although not dangerous on their own, there can be five of them in a single room which can fairly quickly deplete your health if you aren't prepared for them.
These are dwarfs tasked with keeping the rats. They will protect any rats in the same room. They can perform very weak specials but are generally not a very strong NPC.
These are groups of between 3 and 6 rats (indicated by the "tail" count) that are tied together by a silver ring. The silver ring has rubies embedded in it, the number of rubies indicate the number of tails the rat had. Rat Kings are the least common NPC in the Rat Farm and most instances of the Rat Farm don't contain one. The rat kings are much harder to kill than the other NPCs in the rat farm and have a couple of special attacks. Firstly if you kill all of the other rats in the room with them they will "call" and new rats will run in an assist the king. Their other special attack is a "squeak" which pierces the mind and does approximately 100-200 HP in damage. This damage appears to bypass shields and other defences. These attacks can be triggered in fairly quick succession resulting in a fairly large loss in hitpoints. Once the Rat King is killed, the rats that made it up scatter to surrounding rooms and leave behind a silver rat ring. The ring always has the same amount of glowing eyes as the number of tails that the rat king had. This seems to always be between four and six.
There are a number of traps which trigger automatically upon entering a room.
A button is depressed, the floor creaks and then if you don't leave the room quickly enough you fall through a trapdoor losing some health. You will also find yourself somewhere else in the Farm, this could be one of the levels below you or even somewhere else on the level you are currently on.
A small, unassuming half-brick depresses with a click as you put your weight on it. The floor creaks ominously. (two or three rounds of combat) A trapdoor opens under your feet!
A button is depressed, a huge rolling boulder falls in from above and if you don't leave the room quickly enough you take around 400 HP in damage. The boulder will continue to chase you from room to room unless you leave to a different level.
A slit in the wall open then shortly after arrows are fired at you doing varying amounts of damage. These can be deflected with parry or dodged. Alternatively you can leave the room and wait for them to finish firing before re-entering.
You will see a line in the room description indicating that your way is blocked for an exit.
A tripwire is stretched across the southwest exit at around knee height.
Trying to leave in that direction before cutting the tripwire with a sharp implement will fail, causing some damage.
cut <tripwire> with <object>
You search through the wood shavings and come up with a rather unhappy rat. It savages one of your fingers and scurries back under the pile.
Silver Rat Ring
See: silver rat ring
Some rooms contain a locked chest. A key may be elsewhere in the rat farm hanging on a hook, but sometimes no keys spawn in the instance. The chest contains rat farming items. Other than selling, these items have no known practical use . They all weigh 2/9 lb and have a value of &&&&&&&&&&&+2000 . Rat keepers sometimes carry these items as well.
- First you need to find a room with crates.
open crateuntil you find merchandise. Not all crates room might have merchandise.
get merchandiseuntil it says there's no more in this room.
- If you are lucky you'll find what you were looking for. If not, try again in another room with crates.
Types of merchandise:
It is made of iron and appears to be a piece of jewellery. It can hold about 2 pounds, or fifteen items. , a keyring. Weight: 2/9 lb
The plush rat is about three feet long and about a foot and a half wide. It is made of plush. . Weight: 1 6/9 lb
This promotional mug is, rather than the usual small plastic affairs, just a glass pint mug like you'd find in a pub, with a slogan and a little doodle of a smiling rat printed on the side. Its wide base keeps it from being knocked over by drunken patrons, while its thickened glass helps to keep it from breaking when it inevitably gets knocked over regardless. Whoever this mug was made to appeal to, they probably like beer. The glass mug is about six inches long and about three inches wide. It is made of glass and looks like you could hold it. It can hold about 1 pound, about twenty items, or about 1 pint. , a liquid container. Weight: 4/9 lb