Editing 23a:Immigration

{{quality|Exceptional|15:30 27 December 2011 (UTC)}}{{av}}
'''Immigration''' can occur during any [[season]]. A '''migrant''' is a member of a wave of immigration.

Migrants will spawn in groups at the left edge of the map (near your [[road]], if you have one) and move towards any meeting area that you have designated.

If there is no meeting zone they will simply head to the cliffside where your [[wagon (embark)|wagon]] originally arrived until their "migrant" status fades and they find a [[job]]. By default, immigration will stop when your fortress reaches 200 or more, but you can change this in the [[init.txt]] file. It will take several years to reach this number, assuming you want to reach it at all. Once your population falls below this number, immigration will begin again.

== How immigration is calculated ==
Immigration figures are influenced by your fortress's total "Created [[Wealth]]", probably further influenced by reporting of the yearly dwarven [[caravan]].{{verify}} If, for any reason, the caravan does not arrive, or does not make it off the map alive the first year, no wealth is reported{{verify}}, and this will seriously hurt your chances for immigration.{{verify}} Later, if they fail to make it off your map, then the previous year's caravan report is used to determine the next immigration waves.{{verify}} The other known factor that influences immigration is that dwarf deaths in your fortress will make immigrating dwarves scared, reducing immigrant numbers possibly down to zero.

Created Wealth is visible on the Status ({{K|z}}) screen once you get a [[broker]]. All objects with any [[value]] (including mined-out areas, [[bridge]]s, and just about every kind of created [[crafts|good]]) will be included in the total. [[Artifact]]s usually are one of the largest influences of fortress wealth. Artifacts made of precious resources and heavily [[decoration|decorated]] can potentially double fortress wealth early in the game.

It is not a hard formula - identical fortresses with identical created wealth will tend to get more or less based on that wealth, but can experience some differences in the exact number arriving.  The wealth seems to create a target number, and the exact number of immigrants varies around that target.

Immigration is rarely greater than 24 dwarves per wave, not including [[pet]]s, [[children|kids]] and spouses, though rarely larger numbers have been reported.

Immigration will be stopped if your fortress reaches the Population Cap set in the [[init]] file, but a given wave may cause your total to exceed that number.  If your current population is even 1 less than the Population Cap, a full wave of 2 dozen (or more?) immigrants can arrive.

== When does Immigration usually occur? ==
Usually you have to wait until the dwarven [[caravan]] arrives - and leaves alive - in [[Autumn]] to start the immigrants on their way.  If the caravan reports a high Created Wealth, you can expect to receive maybe eight or more migrants in [[Winter]] after the Caravan, and/or more in the [[Spring]] following.  If your dwarves are extremely productive, immigration can occur before the caravan arrives, in Autumn or even in [[Summer]] of your first year.  Even with low created wealth, immigration does usually begin in Spring of the second year on.

Migrants seem to have a greater tendency to arrive in Spring and in greater numbers, but can arrive in any season.

==Immigrants' skills==
Migrants are never very skilled - they arrive with Novice level skill in several related skills for their profession:
*Miner - [[Miner]]
*Carpenter - [[Carpenter]], [[Wood cutter]], and [[Engineer]]/[[Bowyer]]
*Mason - [[Mason]] and [[Engraver]]
*Trapper - [[Animal trainer]]/[[Animal caretaker]], [[Ambusher]]/[[Small animal dissector]], and [[Trapper]]/[[Marksdwarf]]
*Metalsmith - [[Weaponsmith]]/[[Armorsmith]]/[[Metalsmith]], [[Metal crafter]], and [[Furnace operator]]
*Jeweler - [[Gem cutter]] and [[Jeweler]]
*Craftsdwarf - [[Bone carver]]/[[Glassmaker]]/[[Weaver]], [[Stone crafter]]/[[Wood crafter]], [[Leatherworker]]/[[Clothes maker]]
*Fisherdwarf - [[Fisherdwarf]], [[Fish dissector]], and [[Fish cleaner]]
*Farmer - [[Grower]], [[Butcher]], and [[Milker]]/[[Cheese maker]]/[[Tanner]]/[[Dyer]]/[[Herbalist]]/[[Brewer]]/[[Thresher]]/[[Cook]]/[[Miller]]
*Mechanic - [[Mechanic]]

Soldiers with weapons get Adequate (no-label) skill in their weapon along with Novice skill in [[Wrestler]], [[Shield user]], and [[Armor user]]. Wrestlers just get Adequate skill in Wrestling.

Migrants will sometimes bring their unskilled [[spouse]]s, [[child]]ren, and even their [[pet]] [[animal]]s.  Children can perform some jobs, and will slowly grow to become adults, and any adult dwarf can be given any job, and eventually learn that [[skill]] while performing that [[labor]]. 

=== How to influence the types of dwarves that immigrate ===
Immigrant [[profession]]s are influenced not only by the number of each profession you have at your fortress, but also the types of jobs you've been completing.  [[Soldier]]s will only arrive if you have made their type of [[weapon]]; if you make one [[battle axe]], you will only get [[axedwarf|axedwarves]]. If you make a [[crossbow]] and a [[war hammer]], you will get [[marksdwarf|marksdwarves]] and [[hammerdwarf|hammerdwarves]]. This is not affected by weapons brought to your fort; getting immigrant [[woodcutter]]s won't let you get immigrant axedwarves. It is not known if the number of weapons created matters.{{verify}}

When you meet certain requirements in your outpost, like population or created wealth, some [[noble]]s will immigrate, like the [[Dungeon master]].

== What are the drawbacks to immigration? ==
Most of the time, immigration is a ''Good Thing,'' and the more, the merrier. More dwarves means more work gets done (especially hauling, since immigrants are basically peasants), more dwarves can be given "luxury" tasks like defending the fortress or making [[dye]]d [[cloth]], and some nobles require a certain number of dwarves before they arrive. However, more dwarves also means more CPU cycles eaten up, especially if your fortress is already taxing on your computer.

Of course, additional dwarves also require additional [[bedroom]]s, workshops, and [[alcohol|booze]] before they can be properly productive, and some players prefer to increase their population slowly to allow them to add the extra infrastructure at a more sedate pace.

<s>Useless tossers</s> Nobles also can come with immigration waves and will require posh rooms immediately and other items eventually.

== How can I curb immigration? ==
The easiest method to handle immigration is to change the point when immigration stops in [[Init.txt#POPULATION|init.txt]], under "population_cap".  You can first set it low and raise it as you see fit.  Note that you may consider this to be cheating, and it also requires exiting the game each time you want more migrants.

You can also make sure your fort does not produce or build much. Of course, this is not an especially interesting way to play the game. Since artifacts often account for most of your fortress' wealth, killing dwarves that enter [[strange mood]]s may be a better option. This can often be accomplished by making sure all your [[workshop]]s are in enclosed [[room]]s, then locking the [[door]] on them until they go [[insane]], then starve to death. This has a drawback in that dwarves that do manage to produce an artifact often gain a desirable [[legendary]] [[skill]] - lock the door at your own discretion. On the other hand, you can only ever get 18 artifacts in a single fortress, so you may want to save them for worthwhile skills.

You can also kill the migrants themselves, deliberately or otherwise.  Large numbers of deaths will reduce immigration or prevent it entirely.

{{Category|Dwarves}}
{{Category|World}}

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