Forgotten Construction SetReport
English：Forgotten Construction Set · Game Mechanics
The official editor that ships with Kenshi. Whenever this site says "the game data says", this is where it was read from.
FCS is the official editor bundled with Kenshi. It exists for modders, but because it lays the game's data tables open, it doubles as the closest thing to source code for "how is this thing actually set up".
Around sixty articles here refer to it. Anywhere this site writes "the game data says" or "its internal name is", that is where the claim comes from — not from anything visible on screen.
Why an editor keeps appearing in lore articles
Because the screen can mislead you and the data table cannot.
A character's displayed name, its internal identifier, and the faction bucket it is filed under routinely disagree. Cannibals are one example: the data does not file them as human, which is invisible in play but explains why some effects that target humans do nothing to them.
There is also a whole category of content that exists only in the tables — finished, named, statted, and never spawned in a normal game. Harbinger is one. No amount of playing will surface it.
How this site cites it
The rule: if you can see it on screen, just write it; if it only exists in the tables, say so.
That rule exists because table values and felt experience often diverge. Animal stats float with an age multiplier; a trader's stock is a probability table, not a fixed list. Printing a table number as "the number you will meet" gets a reader hurt when they prepare against it.