The First Rule is apparently an advice for survival. It recommends not to run or call for help in case of meeting a monster , but standing still and making no noise, in hopes that it might not notice the presence of a human and go away.
It is unknown how much the First Rule is actually useful, or even if it is followed at all.
- The First Rule is a case of title drop, where the title becomes a line in the story for effect. It is unknown whether the author chose the title from the First Rule or adapted the First Rule to fit the title.
- Page 68 of the webcomic, where the First Rule was seen, is also the first glimpse of a monster.