Inner Darkness
Inner Darkness is a biological species trait in Stellaris 4.5.2 that costs no trait points. It gives +15% Physicist Workforce, -20 Leader Lifespan and -20% Pop Growth Speed.
What Inner Darkness does
Modifier lines by where they apply, as the game prints them; then the trait's own effect text.
- +15%Physicist Workforce
- -20Leader Lifespan
- -20%Pop Growth Speed
- -20%Mechanical Pop Assembly Speed
Produced per 100 
Pops: +$@inner_darkness_dark_matter_production$
When modification offers it
species_potential_add and species_possible_add: when genetic or robotic modification shows and allows the trait (the wording is ours).
- Never (switched off)
In the game
Their bodies enhanced following saturation in Dark Matter, they now vent trace amounts of non-baryonic particles at regular intervals but will burn through their expected lifespan more quickly.
Inner Darkness: questions
How many trait points does Inner Darkness cost?
Inner Darkness costs no trait points (common/traits, Stellaris 4.5.2).
Can I pick Inner Darkness at species creation?
No — it is not offered when a species is created (initial = no); it comes from genetic or robotic modification, events or other effects.
What is the ID of Inner Darkness?
trait_inner_darkness
Source: common/traits/15_strange_worlds_traits.txt, Stellaris Cygnus v4.5.2 (9776).